Atomizing molding device for manufacturing fine aluminum powder and operating method thereof

Abstract

The application discloses an atomization forming device for manufacturing micro aluminum powder and an operation method thereof, relates to the technical field of aluminum powder atomization manufacturing, and comprises a forming main body, the top of the forming main body is fixedly connected with a sealing plate, the bottom of the forming main body is fixedly connected with an electric control discharging valve, the inner wall of the forming main body is provided with a buffer assembly, the top of the sealing plate is threadedly connected with a cover plate, and a feeding hole is formed in the center of the top of the cover plate. The wind-blocking column arranged on the inner wall of the arc-shaped block is used for uniformly distributing the atomized aluminum liquid in the first baffle, and further solves the problem that, in the use process of the conventional atomization forming device for manufacturing micro aluminum powder, the continuous production of the micro aluminum powder leads to the continuous temperature rise of the device, the atomization efficiency of the aluminum liquid is insufficient, the aluminum liquid collides or adheres before solidification, and the production of special-shaped powder is caused, thereby leading to the problems of poor flowability and loose density of the aluminum powder.

Description

Technical Field

[0001] This invention relates to the field of aluminum powder atomization manufacturing technology, specifically to an atomization forming device for manufacturing fine aluminum powder and its operating method. Background Technology

[0002] With the rapid development of fields such as high-grade metallic pigments for automobiles and aluminum paste for solar photovoltaic cell electrodes, the requirements for the sphericity and fine particle size of aluminum powder have increased significantly. For example, the diameter of ultrafine aluminum powder used in solar panels needs to be 0.5-12μm, and the aluminum powder of about 100μm produced by traditional equipment can no longer meet the demand. At the same time, advanced manufacturing technologies such as 3D printing and metal powder injection molding require spherical aluminum powder with d50≤20μm or even d50≤10μm to manufacture complex and precision parts. This directly drives the upgrading of gas atomization forming equipment towards finer particle size and improved sphericity. However, existing atomization aluminum powder forming equipment has two major pain points in use: on the one hand, with the continuous production of fine aluminum powder, it leads to... The continuous rise in temperature inside the device leads to insufficient cooling efficiency of the fine aluminum powder, causing collisions or adhesions before the molten aluminum solidifies, resulting in irregularly shaped powder (referring to poor sphericity of the aluminum powder). On the other hand, in order to effectively reduce the temperature inside the device, inert gas is usually continuously introduced to maintain gas circulation and achieve the purpose of reducing the internal temperature of the device. However, during the inert gas circulation process, a large amount of fine aluminum powder is easily mixed into the inert gas, which not only makes it difficult to recover the inert gas, but also causes some loss of fine aluminum powder, further increasing the production cost of fine aluminum powder.

[0003] The existing technology has the following problems:

[0004] 1. During the use of existing atomization forming equipment for manufacturing fine aluminum powder, the temperature inside the equipment continues to rise due to the continuous production of fine aluminum powder, which leads to insufficient atomization efficiency of aluminum liquid. Collisions or adhesions occur before the aluminum liquid solidifies, resulting in the generation of irregularly shaped powder, which in turn leads to problems such as poor flowability and loose density of aluminum powder.

[0005] 2. In the process of using existing atomization forming equipment for manufacturing fine aluminum powder, the presence of a large amount of fine aluminum powder mixed in the inert gas not only makes it difficult to recover the inert gas, but also causes some loss of fine aluminum powder. Summary of the Invention

[0006] This invention provides an atomization forming device and its operating method for manufacturing fine aluminum powder, in order to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0008] A micro-atomizing forming device for manufacturing fine aluminum powder includes a forming body. A sealing plate is fixedly connected to the top of the forming body, and an electrically controlled discharge valve is fixedly connected to the bottom of the forming body. A buffer assembly is provided on the inner wall of the forming body. A cover plate is threadedly connected to the top of the sealing plate, and a feed hole is opened at the center of the top of the cover plate. A guide column is fixedly connected to the inner wall of the sealing plate, and a discharge nozzle is fixedly connected to the center of the bottom of the sealing plate. A ring-shaped exhaust fan is fixedly connected to the inner cavity of the sealing plate, and several air pipes are fixedly connected to the inner wall of the ring-shaped exhaust fan. The outer wall of the air pipes penetrates and is fixedly connected to the inner cavity of the sealing plate.

[0009] A further improvement of the technical solution of the present invention is that: the buffer assembly includes a connecting block fixedly connected to one side of the inner wall of the molding body, and an annular groove is provided on one side of the inner wall of the connecting block; a first partition is fixedly connected to the top of one side of the inner wall of the connecting block, and a second partition is fixedly connected to the bottom of one side of the inner wall of the connecting block; the top of the second partition is fixedly connected to the bottom of the sealing plate; a heat-conducting pipe is fixedly connected to one end of the outer wall of the first partition, and a plurality of heat sinks are fixedly connected to the outer wall of the heat-conducting pipe; a pressure-boosting plate is rotatably connected between the first partition and the second partition, and the pressure-boosting plate is located in the annular groove; and the outer wall of the pressure-boosting plate... The pressure plate has serrated edges. An exhaust ring is fixedly connected to the inner wall of the pressure plate, and a fixed ring is rotatably connected to one end of the top of the pressure plate. The inner wall of the fixed ring is fixedly connected to the bottom of one side of the outer wall of the second partition. A first air guide pipe is fixedly connected to one end of the top of the fixed ring. The outer wall of the first air guide pipe is fixedly connected to the annular groove and the inner cavity of the molding body. A gas distributor is fixedly connected to one end of the first air guide pipe. A gas storage chamber is fixedly connected to one side of the outer wall of the gas distributor. An air inlet pipe is fixedly connected to the input end of the top of the gas distributor, and one end of the air inlet pipe is fixedly connected to the output end of the gas storage chamber.

[0010] A further improvement of the technical solution of the present invention is that: the output end of the bottom of the gas distributor is fixedly connected to a second gas guide pipe, and the outer wall of the second gas guide pipe penetrates and is fixedly connected to the inner cavity of the molding body and the second partition; the end of the second gas guide pipe is fixedly connected to a support frame, and the outer wall of the support frame is fixedly connected to the inner wall of the second partition; one end of the inner wall of the second partition is fixedly connected to an arc-shaped block, and the inner wall of the arc-shaped block is fixedly connected to a windbreak column.

[0011] A further improvement of the technical solution of the present invention is that: an electrically controlled telescopic platform is fixedly connected to the outer wall of the molding body, and a sealing plate is fixedly connected to the output end of the electrically controlled telescopic platform; the inner wall of the sealing plate is slidably connected to the outer wall of the molding body; a first motor is fixedly connected to one end of the outer wall of the molding body near the electrically controlled telescopic platform; a synchronous belt is driven to the output end of the first motor; the outer wall of the synchronous belt penetrates the inner wall of the molding body; a linkage gear rod is driven to the end of the synchronous belt; one side of the outer wall of the linkage gear rod meshes with the outer wall of the pressure plate; both ends of the linkage gear rod are rotatably connected to a fixed frame; and the outer wall of the fixed frame is fixedly connected to the inner wall of the molding body.

[0012] A further improvement of the technical solution of the present invention is that: a discharge groove is provided at one end of the outer wall of the molding body, and an extension plate is fixedly connected to the bottom of the inner wall of the discharge groove. Several support plates are fixedly connected to the top of the extension plate, and the top of the support plate is fixedly connected to the inner wall of the molding body. One end of the top of the extension plate is in contact with the bottom of the sealing plate. A fan impeller is rotatably connected between the extension plate and the connecting block, and several air inlets are provided at the bottom of the connecting block.

[0013] A further improvement of the technical solution of the present invention is that: a second motor is fixedly connected to one end of the outer wall of the molding body near the gas distributor, and a transmission gear rod is fixedly connected to the output end of the second motor. The outer wall of the transmission gear rod penetrates and is rotatably connected to the inner wall of the molding body, and a gear ring meshes with one side of the outer wall of the transmission gear rod, while the inner wall of the gear ring is fixedly connected to one end of the outer wall of the fan impeller.

[0014] A further improvement of the technical solution of the present invention is that: an air extraction pipe is fixedly connected to one end of the inner wall of the connecting block near the annular groove, and an air pump is fixedly connected to the end of the air extraction pipe, while a bubble chamber is fixedly connected to the top of the air pump, a connecting pipe is fixedly connected to the output end of the air pump, and an electrically controlled exhaust valve is fixedly connected to the outer wall of the connecting pipe.

[0015] A further improvement of the technical solution of the present invention is that: an exhaust plate is fixedly connected to the end of the connecting pipe, and the outer wall of the connecting pipe penetrates and is fixedly connected to the center of the bottom of the bubbling chamber, while one side of the outer wall of the bubbling chamber is fixedly connected to the outer wall of the molding body, a number of blocking blocks are fixedly connected to the inner wall of the bubbling chamber, and a liquid inlet pipe is fixedly connected to one end of the top of the bubbling chamber.

[0016] A further improvement of the technical solution of the present invention is that: a connecting pipe is fixedly connected to the top of one side of the outer wall of the bubbling chamber, and the outer wall of the connecting pipe penetrates and is fixedly connected to the inner cavity of the molding body; an annular exhaust fan is fixedly connected to the end of the connecting pipe, and the outer wall of the annular exhaust fan is fixedly connected to one end of the inner wall of the molding body.

[0017] A method for atomization forming in the manufacture of fine aluminum powder, the method employing the aforementioned atomization forming apparatus for the manufacture of fine aluminum powder, as follows:

[0018] S1: By setting a feed hole at the center of the top of the cover plate, the molten aluminum liquid is then poured through the feed hole onto the top of the guide column set on the inner wall of the sealing plate, so that the aluminum liquid flows along the surface of the guide column to the discharge nozzle set at the center of the bottom of the sealing plate. The atomized aluminum liquid is buffered by the buffer component set on the inner wall of the forming body.

[0019] S2: The buffer assembly sets up a pressure plate between the first and second partitions, continuously fills the pressure plate with nitrogen through the first air guide pipe, and discharges it through the exhaust ring, causing the nitrogen to move upward along the inner wall of the first partition. Under the effect of airflow adhering to the wall, a high-speed flowing air film is formed on the inner wall of the first partition. At the same time, the nitrogen is discharged through the end of the second air guide pipe and sprayed towards the bottom of the wind deflector column, forming multiple uniform air masses. Under the impact of the air film and the air masses, the sprayed atomized aluminum liquid is evenly distributed in the first partition, thereby slowing down the falling of the atomized aluminum liquid.

[0020] S3: By blowing the pure nitrogen gas discharged by the annular exhaust fan onto the heat pipe and heat sink, and then using the annular exhaust fan set in the inner cavity of the sealing plate to discharge the heated nitrogen gas through the vent pipe, the internal temperature of the first partition plate is reduced while the nitrogen gas is reused.

[0021] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows:

[0022] 1. This invention provides an atomizing forming device for manufacturing fine aluminum powder and its operating method. By setting a baffle column on the inner wall of the arc-shaped block, the high-pressure nitrogen gas discharged from the second air guide pipe rushes towards the bottom of the baffle column. Utilizing the Karman vortex effect, combined with the smooth arc surface of the arc-shaped block, the high-pressure nitrogen gas forms multiple uniform air masses when passing through the baffle column. When the atomized aluminum liquid sprayed from the discharge nozzle continues to fall, it comes into contact with the air masses formed by the high-pressure nitrogen gas, causing the two opposing airflows to form turbulence in the first partition, and making the atomized aluminum liquid evenly distributed in the first partition. This further solves the problem that in the traditional atomizing forming device for manufacturing fine aluminum powder, the continuous production of fine aluminum powder causes the internal temperature of the device to rise continuously, resulting in insufficient atomization efficiency of the aluminum liquid, collision or adhesion before the aluminum liquid solidifies, and the generation of irregularly shaped powder, which leads to poor flowability and loose density of the aluminum powder.

[0023] 2. This invention provides an atomizing forming device for manufacturing fine aluminum powder and its operating method. By setting a connecting pipe at the top of one side of the outer wall of the bubbling chamber, the outer wall of the connecting pipe penetrates the inner cavity of the forming body, and the filtered nitrogen gas is discharged into an annular exhaust fan set at one end of the inner wall of the forming body. Since the forming body is in a closed environment, the pure nitrogen gas discharged by the annular exhaust fan is blown onto the heat conduction pipe and heat sink. Then, the heated nitrogen gas is discharged through the vent pipe by an annular exhaust fan set in the inner cavity of the sealing plate. This further solves the problem that in the traditional atomizing forming device for manufacturing fine aluminum powder, the inert gas is mixed with a large amount of fine aluminum powder, which not only makes the recovery of inert gas difficult, but also causes some loss of fine aluminum powder. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the gas storage chamber structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the gas splitter structure of the present invention;

[0027] Figure 4 This is a front cross-sectional view of the first and second partitions of the present invention;

[0028] Figure 5 This is a schematic cross-sectional view of the first and second partitions of the present invention.

[0029] Figure 6 This is a schematic diagram of the bubbling chamber structure of the present invention;

[0030] Figure 7 This is a schematic cross-sectional view of the top surface of the first partition of the present invention;

[0031] Figure 8 This is a schematic cross-sectional view of the top surface of the annular groove of the present invention;

[0032] Figure 9 This is a schematic cross-sectional view of the top surface of the second partition of the present invention;

[0033] Figure 10 This is a schematic diagram of the booster disc structure of the present invention;

[0034] Figure 11 This is a schematic diagram of the exploded structure of the connecting block of the present invention;

[0035] Figure 12 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0036] Figure 13 For the present invention Figure 5Enlarged structural diagram at point B;

[0037] Figure 14 For the present invention Figure 5 Enlarged structural diagram at point C.

[0038] In the diagram: 1. Molding body; 2. Sealing plate; 3. Electrically controlled discharge valve; 4. Cover plate; 5. Feed hole; 6. Guide column; 7. Discharge nozzle; 8. Circular exhaust fan; 9. Vent pipe; 10. Connecting block; 11. Circular groove; 12. First partition plate; 13. Second partition plate; 14. Heat conduction pipe; 15. Heat sink; 16. Pressure plate; 17. Exhaust ring; 18. Fixing ring; 19. First air guide pipe; 20. Gas distributor; 21. Gas storage chamber; 22. Air inlet pipe; 23. Second air guide pipe; 24. Support frame; 25. Arc-shaped block; 6. Windbreak column; 27. Electrically controlled telescopic platform; 28. Sealing plate; 29. ​​First motor; 30. Synchronous belt; 31. Linkage gear rod; 32. Fixed frame; 33. Discharge chute; 34. Extension plate; 35. Support plate; 36. Fan impeller; 37. Air inlet; 38. Second motor; 39. Transmission gear rod; 40. Gear ring; 41. Air extraction pipe; 42. Air pump; 43. Bubble chamber; 44. Connecting pipe; 45. Electrically controlled exhaust valve; 46. Exhaust disc; 47. Barrier block; 48. Liquid inlet pipe; 49. Connecting pipe; 50. Circular exhaust fan. Detailed Implementation

[0039] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0040] like Figures 1 to 14As shown in the embodiment of the present invention, an atomization forming device for manufacturing fine aluminum powder includes a forming body 1. A sealing plate 2 is fixedly connected to the top of the forming body 1, and an electrically controlled discharge valve 3 is fixedly connected to the bottom of the forming body 1. A buffer assembly is provided on the inner wall of the forming body 1. A cover plate 4 is threadedly connected to the top of the sealing plate 2, and a feed hole 5 is opened at the center of the top of the cover plate 4. A guide column 6 is fixedly connected to the inner wall of the sealing plate 2, and a discharge nozzle 7 is fixedly connected to the center of the bottom of the sealing plate 2. A ring-shaped exhaust fan 8 is fixedly connected to the inner cavity of the sealing plate 2, and several ventilation pipes 9 are fixedly connected to the inner wall of the ring-shaped exhaust fan 8. The outer wall of the trachea 9 penetrates and is fixedly connected to the inner cavity of the sealing plate 2. The buffer assembly includes a connecting block 10 fixedly connected to one side of the inner wall of the molding body 1, and an annular groove 11 is provided on one side of the inner wall of the connecting block 10. A first partition 12 is fixedly connected to the top of one side of the inner wall of the connecting block 10, and a second partition 13 is fixedly connected to the bottom of one side of the inner wall of the connecting block 10. The top of the second partition 13 is fixedly connected to the bottom of the sealing plate 2, and a heat-conducting pipe 14 is fixedly connected to one end of the outer wall of the first partition 12. Several heat sinks 15 are fixedly connected to the outer wall of the heat-conducting pipe 14. The first partition 12 and the second partition 13 are rotatably connected. A booster plate 16 is located within an annular groove 11, and its outer wall has serrated edges. An exhaust ring 17 is fixedly connected to the inner wall of the booster plate 16, and a fixing ring 18 is rotatably connected to one end of the top of the booster plate 16. The inner wall of the fixing ring 18 is fixedly connected to the bottom of one side of the outer wall of the second partition plate 13. A first air guide pipe 19 is passed through and fixedly connected to one end of the top of the fixing ring 18, and the outer wall of the first air guide pipe 19 passes through and is fixedly connected to the annular groove 11 and the inner cavity of the molding body 1. A gas distributor 20 is fixedly connected to one end of the first air guide pipe 19, and one side of the outer wall of the gas distributor 20 is fixedly connected to... A gas storage chamber 21 is connected to the gas distributor 20. An air inlet pipe 22 is fixedly connected to the input end of the top of the gas distributor 20. One end of the air inlet pipe 22 is fixedly connected to the output end of the gas storage chamber 21. A second air guide pipe 23 is fixedly connected to the output end of the gas distributor 20. The outer wall of the second air guide pipe 23 penetrates and is fixedly connected to the inner cavity of the molding body 1 and the second partition 13. A support frame 24 is fixedly connected to the end of the second air guide pipe 23. The outer wall of the support frame 24 is fixedly connected to the inner wall of the second partition 13. An arc-shaped block 25 is fixedly connected to one end of the inner wall of the second partition 13. A windbreak column 26 is fixedly connected to the inner wall of the arc-shaped block 25.

[0041] During operation, by activating the gas distributor 20 (which, through a specific internal structural design, effectively diverts incoming gas to multiple outlets under pressure and flow rate changes, and is considered existing technology) located on one side of the outer wall of the gas storage chamber 21, the nitrogen stored in the gas storage chamber 21 is discharged into the input end of the gas distributor 20 located at the top end via the inlet pipe 22 at its output end. Subsequently, the nitrogen passes through the first gas guide pipe 19 at its top output end and the second gas guide pipe 23 at its bottom output end, respectively, through the inner cavity of the molding body 1, filling the molding body 1 with nitrogen. A sealing plate 2 is set on the top of the body 1, and a cover plate 4 is installed on the top of the sealing plate 2. A feed hole 5 is set at the center of the top of the cover plate 4. Molten aluminum liquid is then poured through the feed hole 5 onto the top of the guide column 6 set on the inner wall of the sealing plate 2. The aluminum liquid flows along the surface of the guide column 6 to the discharge nozzle 7 set at the bottom center of the sealing plate 2 (the discharge nozzle 7 is a basic component in the micro-fine aluminum powder atomization forming device and belongs to the prior art). At the same time, the annular exhaust fan 8 set in the inner cavity of the sealing plate 2 is started, and the nitrogen gas drawn in is sprayed through several ventilation pipes 9 set at its output end onto the aluminum liquid in the sealing plate 2, so that the aluminum liquid is sprayed into the forming body 1 through the discharge nozzle 7.

[0042] It should be further explained that, since a connecting block 10 is provided on one side of the inner wall of the molding body 1, and an annular groove 11 is provided on one side of the inner wall of the connecting block 10, and a first partition 12 and a second partition 13 are respectively provided at both ends of one side of the inner wall of the connecting block 10, a pressure plate 16 is provided between the first partition 12 and the second partition 13, and a fixing ring 18 is provided at one end of the top of the pressure plate 16 (since the side of the pressure plate 16 near the fixing ring 18 is located in the annular groove 11, and the annular groove 11 is a sealed space formed by the first partition 12, the second partition 13 and the pressure plate 16, and the pressure plate 16 is sealed with the first partition 12 and the second partition 13, nitrogen in the molding body 1 is prevented from entering the molded body 1). (Gas leaks through the gaps between the synchronous belts 30). While fixing the end of the first air guide pipe 19 with the fixing ring 18, the nitrogen discharged from the first air guide pipe 19 is filled into the booster plate 16. As the nitrogen is continuously filled, the nitrogen in the booster plate 16 enters the exhaust ring 17 (which is composed of a distribution plate and several pressure nozzles, and is existing technology) set on its inner wall, and is discharged through the exhaust ring 17. The nitrogen moves upward along the inner wall of the first partition plate 12. Under the effect of airflow adhering to the wall, a high-speed flowing gas film is formed on the inner wall of the first partition plate 12. By setting the first motor 29 on one side of the outer wall of the molding body 1, and setting symmetrically arranged motors at corresponding positions on the inner wall of the molding body 1, the nitrogen is effectively controlled. The fixed frame 32, using the synchronous belt 30 (composed of a synchronous pulley and a synchronous toothed belt, which is existing technology) provided at the output end of the first motor 29, passes through the inner cavity of the molding body 1 and drives the linkage gear rod 31 (composed of a gear and a linkage rod, which is existing technology) provided between the two fixed frames 32 to rotate. Since the outer wall of the booster plate 16 has toothed grooves, the linkage gear rod 31 drives the booster plate 16 and the exhaust ring 17 to rotate between the first partition 12 and the second partition 13. (Since the inner wall of the fixed ring 18 is fixed to the inner wall of the first partition 12, when the booster plate 16 and the exhaust ring 17 rotate, the fixed ring 18...) And the first gas guide pipe 19 remains stationary, so that the high-pressure nitrogen gas flow discharged by the exhaust ring 17 forms a continuous and stable gas film on the inner wall of the first partition 12. Since the top of the inner wall of the first partition 12 has a smooth arc, when the high-pressure gas film moves to the top of the inner wall of the first partition 12, the air flow gathers along the arc towards the discharge port of the discharge nozzle 7. When the discharge nozzle 7 atomizes and sprays out the aluminum liquid, the air flow that gathers in all directions gathers the sprayed atomized aluminum liquid, thereby constraining the coverage area of ​​the atomized aluminum liquid and preventing the atomized aluminum liquid from colliding or sticking with the inner wall of the first partition 12 before cooling, thus causing the generation of irregular powder (referring to poor sphericity of aluminum powder), resulting in poor flowability and loose density of aluminum powder.

[0043] It should be further explained that since the temperature of the atomized aluminum liquid sprayed from the discharge nozzle 7 reaches 650 to 700 degrees Celsius, and the process of the atomized aluminum liquid solidifying into fine aluminum powder is an exothermic process, since the forming body 1 is a closed device, the heat generated during the exothermic solidification process of the fine aluminum powder is difficult to dissipate, resulting in the first partition 12 always being at a high temperature, which greatly prolongs the subsequent solidification time of the atomized aluminum liquid. By setting a heat-conducting pipe 14 at one end of the outer wall of the first partition 12, the heat carried by the gas film is transferred through the first partition 12 into the heat-conducting pipe 14. By setting several heat dissipation fins 15 on the outer wall of the heat-conducting pipe 14, the heat accumulated in the heat-conducting pipe 14 is dissipated, thereby achieving the purpose of reducing the internal temperature of the first partition 12.

[0044] It needs to be explained again that by setting a support frame 24 on the inner wall of the second partition 13, the end of the second air guide pipe 23 is fixed by the support frame 24. By setting an arc-shaped block 25 at one end of the inner wall of the second partition 13, and setting a wind-blocking column 26 on the inner wall of the arc-shaped block 25, the high-pressure nitrogen gas discharged from the second air guide pipe 23 rushes towards the bottom of the wind-blocking column 26. Utilizing the Karman vortex effect, combined with the smooth arc surface of the arc-shaped block 25, the high-pressure nitrogen gas forms multiple uniform air currents when passing through the wind-blocking column 26. As the atomized aluminum liquid ejected from the discharge nozzle 7 continues to fall, it comes into contact with the airflow formed by the high-pressure nitrogen gas. This causes the two opposing airflows to form turbulence within the first partition 12, resulting in a uniform distribution of the atomized aluminum liquid within the first partition 12. Because the exhaust ring 17 continuously discharges uniform high-pressure nitrogen gas, forming an air film on the inner wall of the first partition 12, the turbulent atomized aluminum liquid, just before contacting the inner wall of the first partition 12, is carried by the air film and moves towards the top of the first partition 12. During this process, the atomized aluminum liquid is subjected to multiple... The airflow from different directions rapidly cools the atomized aluminum liquid, causing it to solidify completely just before it reaches the top of the inner wall of the first partition 12. At this point, the solidified fine aluminum powder has difficulty moving along the curved surface at the top of the inner wall of the first partition 12. Consequently, under the impact of the air film, the fine aluminum powder prematurely breaks free from the air film's restraint and falls into the top of the arc-shaped block 25 along the low-pressure zone between the air film and the airflow, where it accumulates. Once a certain amount of fine aluminum powder has accumulated on the top of the arc-shaped block 25, the accumulation collapses along the top of the arc-shaped block 25. The aluminum powder falls along the inclined surface of the arc block 25 into the bottom of the forming body 1. After the fine aluminum powder is manufactured, the electrically controlled discharge valve 3 set at the bottom of the forming body 1 is activated to discharge the fine aluminum powder. This further solves the problem that in the process of using the traditional atomization forming device for fine aluminum powder manufacturing, the temperature inside the device continues to rise due to the continuous production of fine aluminum powder, which leads to insufficient atomization efficiency of aluminum liquid, collision or adhesion before the aluminum liquid solidifies, resulting in the generation of irregularly shaped powder, thus causing poor flowability and loose density of aluminum powder.

[0045] An electrically controlled telescopic platform 27 is fixedly connected to the outer wall of the molding body 1, and a sealing plate 28 is fixedly connected to the output end of the electrically controlled telescopic platform 27. The inner wall of the sealing plate 28 is slidably connected to the outer wall of the molding body 1. A first motor 29 is fixedly connected to one end of the outer wall of the molding body 1 near the electrically controlled telescopic platform 27, and a synchronous belt 30 is driven to the output end of the first motor 29. The outer wall of the synchronous belt 30 penetrates the inner wall of the molding body 1. A linkage gear rod 31 is driven to the end of the synchronous belt 30, and one side of the outer wall of the linkage gear rod 31 meshes with the outer wall of the booster plate 16. Fixed brackets 3 are rotatably connected to both ends of the linkage gear rod 31. 2. The outer wall of the fixing frame 32 is fixedly connected to the inner wall of the molding body 1. One end of the outer wall of the molding body 1 is provided with a discharge groove 33, and an extension plate 34 is fixedly connected to the bottom of the inner wall of the discharge groove 33. Several support plates 35 are fixedly connected to the top of the extension plate 34, and the top of the support plates 35 is fixedly connected to the inner wall of the molding body 1. One end of the top of the extension plate 34 is in contact with the bottom of the sealing plate 28. A fan impeller 36 is rotatably connected between the extension plate 34 and the connecting block 10, and several air inlets 37 are provided at the bottom of the connecting block 10. A second motor 38 is fixedly connected to the end of the outer wall of the molding body 1 near the gas distributor 20. Furthermore, a transmission gear rod 39 is fixedly connected to the output end of the second motor 38. The outer wall of the transmission gear rod 39 penetrates and is rotatably connected to the inner wall of the molding body 1. A gear ring 40 meshes with one side of the outer wall of the transmission gear rod 39, and the inner wall of the gear ring 40 is fixedly connected to one end of the outer wall of the fan impeller 36. An air extraction pipe 41 is fixedly connected to one end of the inner wall of the connecting block 10 near the annular groove 11, and an air pump 42 is fixedly connected to the end of the air extraction pipe 41. A bubble chamber 43 is fixedly connected to the top of the air pump 42. A connecting pipe 44 is fixedly connected to the output end of the air pump 42, and an electrically controlled exhaust valve 45 is fixedly connected to the outer wall of the connecting pipe 44. An exhaust plate 46 is fixedly connected to the end of the connecting pipe 44, and the outer wall of the connecting pipe 44 penetrates and is fixedly connected to the center of the bottom of the bubble chamber 43. One side of the outer wall of the bubble chamber 43 is fixedly connected to the outer wall of the molding body 1. Several baffle blocks 47 are fixedly connected to the inner wall of the bubble chamber 43, and an inlet pipe 48 is fixedly connected to one end of the top of the bubble chamber 43. A connecting pipe 49 is fixedly connected to the top of one side of the outer wall of the bubble chamber 43, and the outer wall of the connecting pipe 49 penetrates and is fixedly connected to the inner cavity of the molding body 1. An annular exhaust fan 50 is fixedly connected to the end of the connecting pipe 49, and the outer wall of the annular exhaust fan 50 is fixedly connected to one end of the inner wall of the molding body 1.

[0046] During operation, a discharge trough 33 is provided at one end of the outer wall of the molding body 1, and an extension plate 34 is provided at the bottom of the inner wall of the discharge trough 33. Several support plates 35 provided at the top of the extension plate 34 are used to connect the molding body 1. A fan impeller 36 is provided between the extension plate 34 and the connecting block 10. The second motor 38 is provided at the end of the outer wall of the molding body 1 near the gas distributor 20, which drives the transmission gear rod 39 (which is composed of a gear and a transmission rod, and is existing technology) at the output end. The transmission gear rod 39 passes through the inner wall of the molding body 1 and drives the gear ring 40 provided at one end of the outer wall of the fan impeller 36 to rotate. This causes the rotating fan impeller 36 to pass through several air intakes provided at the bottom of the connecting block 10. At port 37, the fine aluminum powder and nitrogen gas flying inside the molding body 1 are drawn into the space between the connecting block 10 and the extension plate 34. Because one end of the extension plate 34 has a curved bottom, the nitrogen gas mixed with fine aluminum powder is drawn into the discharge trough 33 by the impeller 36, allowing it to initially settle. An extraction pipe 41 is installed on the inner wall of the connecting block 10 near the annular groove 11, and an air pump 42 is installed at the end of the extraction pipe 41. The air pump 42 is activated to draw nitrogen gas from the discharge trough 33 into the pump. A connecting pipe 44 is installed at the output end of the air pump 42, and an electrically controlled exhaust valve 45 (a one-way exhaust valve) is installed on the inner wall of the connecting pipe 44. It has the function of one-way exhaust and blocking liquid inflow (which belongs to the prior art). By setting a bubble chamber 43 on one side of the outer wall of the molding body 1, paraffin oil is poured in through the liquid inlet pipe 48 set at one end of the top of the bubble chamber 43 and the paraffin oil is filled to three-quarters of the bubble chamber 43. At this time, the electronically controlled exhaust valve 45 is opened, so that nitrogen gas carrying fine aluminum powder enters the exhaust plate 46 set at its end through the connecting pipe 44. Since the inner wall of the bubble chamber 43 is provided with several baffles 47, the large number of fine bubbles discharged from the exhaust plate 46 come into contact with the bottom of the baffles 47 and break, so that the fine aluminum powder in the nitrogen bubbles is adsorbed by the paraffin oil, so that the filtered nitrogen gas fills the top of the bubble chamber 43. At this time, through the outer wall of the bubble chamber 43, the paraffin oil is poured in through the liquid inlet pipe 48 set at one end of the top of the bubble chamber 43 and the paraffin oil is filled to three-quarters of the top of the bubble chamber 43. A connecting pipe 49 is installed at the top, with its outer wall penetrating the inner cavity of the molding body 1. Filtered nitrogen is discharged into an annular exhaust fan 50 (existing technology) located at one end of the inner wall of the molding body 1. Since the molding body 1 is in a closed environment, the pure nitrogen discharged by the annular exhaust fan 50 blows onto the heat pipe 14 and heat sink 15. Subsequently, an annular exhaust fan 8 located inside the sealing plate 2 discharges the heated nitrogen through a vent pipe 9, impacting the molten aluminum inside the sealing plate 2. This causes the molten aluminum to be sprayed out from the discharge nozzle 7 in an atomized state, effectively reducing the temperature inside the first partition 12 and causing the atomized molten aluminum inside to quickly solidify into fine aluminum powder, thus accelerating the generation of fine aluminum powder.On the other hand, the heated nitrogen gas is recycled and reintroduced into the sealing plate 2 to prevent the temperature of the molten aluminum entering the sealing plate 2 from dropping, which could lead to rapid solidification and blockage of the sealing plate 2 and the discharge nozzle 7. This further solves the problem that traditional atomization forming devices for manufacturing fine aluminum powder suffer from difficulties in inert gas recovery and loss of some fine aluminum powder due to the presence of a large amount of fine aluminum powder in the inert gas.

[0047] It should be further explained that, since an electrically controlled telescopic table 27 is provided at one end of the outer wall of the molding body 1 near the first motor 29, and a sealing plate 28 is provided at the output end of the electrically controlled telescopic table 27, and the bottom of the sealing plate 28 contacts one end of the top of the extension plate 34 (the sealing plate 28 and the extension plate 34 are sealed here), when the nitrogen containing fine aluminum powder in the discharge trough 33 undergoes preliminary settling, some fine aluminum powder adheres to the surface of the extension plate 34. When the fine aluminum powder is produced, the electrically controlled telescopic table 27 is activated, and the sealing plate 28 is detached from the extension plate 34, thereby recovering the fine aluminum powder adhering to the surface of the extension plate 34.

[0048] It should be reiterated that, since a disassembly plate is provided on the side of the outer wall of the bubbling chamber 43 away from the molding body 1, and the disassembly plate is fixed to the bubbling chamber 43 with screws, and the disassembly plate and the bubbling chamber 43 are sealed, after the fine aluminum powder is processed, the paraffin oil in the bubbling chamber 43 is allowed to settle for 30 to 50 minutes to allow the fine aluminum powder floating in the paraffin oil to settle completely. Then, the liquid pump is used to send the liquid into the pump through the liquid extraction pipe (here, the liquid pump and liquid extraction pipe are existing technologies). In the inlet pipe 48 at the top of the bubbling chamber 43, start the pump to draw the paraffin oil in the bubbling chamber 43 to one-third full. Then, use a screwdriver to remove the screws at both ends of the bottom of the disassembly plate and gently pull the disassembly plate outward to allow the remaining paraffin oil in the bubbling chamber 43 to flow out along the gap between the disassembly plate and the bubbling chamber 43. After the paraffin oil has completely flowed out, use a screwdriver to remove the remaining screws at both ends of the top of the disassembly plate and remove the disassembly plate to collect the fine aluminum powder that has settled at the bottom of the bubbling chamber 43.

[0049] A method for atomization forming in the manufacture of fine aluminum powder, the method employing the aforementioned atomization forming apparatus for the manufacture of fine aluminum powder, as follows:

[0050] S1: By setting a feed hole 5 at the center of the top of the cover plate 4, the molten aluminum liquid is then poured through the feed hole 5 onto the top of the guide column 6 set on the inner wall of the sealing plate 2, so that the aluminum liquid flows along the surface of the guide column 6 to the discharge nozzle 7 set at the bottom center of the sealing plate 2. The atomized aluminum liquid is buffered by the buffer component set on the inner wall of the molding body 1.

[0051] S2: The buffer assembly sets up a pressure plate 16 between the first partition 12 and the second partition 13. Nitrogen gas is continuously injected into the pressure plate 16 through the first air guide pipe 19 and discharged through the exhaust ring 17, causing the nitrogen gas to move upward along the inner wall of the first partition 12. Under the effect of airflow adhering to the wall, a high-speed flowing air film is formed on the inner wall of the first partition 12. At the same time, nitrogen gas is discharged through the end of the second air guide pipe 23 and sprayed towards the bottom of the wind deflector 26, forming multiple uniform air masses. Under the impact of the air film and the air masses, the sprayed atomized aluminum liquid is evenly distributed in the first partition 12, thereby achieving the purpose of slowing down the fall of the atomized aluminum liquid.

[0052] S3: The pure nitrogen gas discharged by the annular exhaust fan 50 is blown onto the heat pipe 14 and the heat sink 15. Then, the heated nitrogen gas is discharged through the vent pipe 9 by the annular exhaust fan 8 set in the inner cavity of the sealing plate 2, thereby reducing the internal temperature of the first partition 12 and making secondary use of the nitrogen gas.

[0053] The working principle of the atomization forming device for manufacturing fine aluminum powder and its operation method will be explained in detail below.

[0054] like Figures 1-14As shown, by activating the gas distributor 20 located on one side of the outer wall of the gas storage chamber 21, the nitrogen stored in the gas storage chamber 21 is discharged into the input end located at the top of the gas distributor 20 through the inlet pipe 22 located at its output end. Then, it passes through the inner cavity of the molding body 1 through the first gas guide pipe 19 located at its top output end and the second gas guide pipe 23 located at its bottom output end, respectively, so that the nitrogen fills the molding body 1. By setting a sealing plate 2 on the top of the molding body 1 and installing a cover plate 4 on the top of the sealing plate 2, and by setting a feed hole 5 at the center of the top of the cover plate 4, the molten aluminum liquid is poured into the top of the guide column 6 located on the inner wall of the sealing plate 2 through the feed hole 5, so that the aluminum liquid flows along the surface of the guide column 6 to the bottom center of the sealing plate 2. Simultaneously, the annular exhaust fan 8 inside the sealing plate 2 is activated within the discharge nozzle 7, and the drawn-in nitrogen gas is sprayed through several ventilation pipes 9 at its output end onto the molten aluminum inside the sealing plate 2. This allows the molten aluminum to be sprayed into the molding body 1 through the discharge nozzle 7. A connecting block 10 is located on one side of the inner wall of the molding body 1, and an annular groove 11 is located on one side of the inner wall of the connecting block 10. A first partition 12 and a second partition 13 are respectively located at both ends of one side of the inner wall of the connecting block 10. A pressure plate 16 is installed between the first partition 12 and the second partition 13, and a fixing ring 18 is installed at one end of the top of the pressure plate 16. The fixing ring 18 secures the end of the first air guide pipe 19 while simultaneously allowing the nitrogen gas discharged from the first air guide pipe 19 to pass through. Nitrogen gas is injected into the booster plate 16. As nitrogen gas is continuously injected, the nitrogen gas in the booster plate 16 enters the exhaust ring 17 set on its inner wall and is discharged through the exhaust ring 17. The nitrogen gas moves upward along the inner wall of the first partition plate 12. Under the effect of airflow adhering to the wall, a high-speed flowing gas film is formed on the inner wall of the first partition plate 12. A first motor 29 is set on one side of the outer wall of the molding body 1, and symmetrical fixing frames 32 are set at corresponding positions on the inner wall of the molding body 1. The synchronous belt 30 set on the output end of the first motor 29 passes through the inner cavity of the molding body 1 and drives the linkage gear rod 31 set between the two fixing frames 32 to rotate. Since the outer wall of the booster plate 16 is provided with tooth marks, the linkage gear rod 31 drives the booster plate 16 to rotate. The pressure plate 16 and the exhaust ring 17 rotate between the first partition 12 and the second partition 13, causing the high-pressure nitrogen gas flow discharged by the exhaust ring 17 to form a continuous and stable gas film on the inner wall of the first partition 12. Since the top of the inner wall of the first partition 12 has a smooth arc, when the high-pressure gas film moves to the top of the inner wall of the first partition 12, the airflow gathers along the arc towards the discharge port of the discharge nozzle 7. When the discharge nozzle 7 atomizes and sprays out the aluminum liquid, the airflow that gathers in all directions gathers the sprayed atomized aluminum liquid, thereby constraining the coverage area of ​​the atomized aluminum liquid and preventing the atomized aluminum liquid from colliding or sticking with the inner wall of the first partition 12 before cooling, which would cause the generation of irregular powder and result in poor flowability and loose density of aluminum powder.

[0055] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An atomization forming device for manufacturing fine aluminum powder, comprising a forming body (1), characterized in that: The top of the molding body (1) is fixedly connected to a sealing plate (2), and the bottom of the molding body (1) is fixedly connected to an electrically controlled discharge valve (3). The inner wall of the molding body (1) is provided with a buffer assembly. The top of the sealing plate (2) is threadedly connected to a cover plate (4), and a feed hole (5) is opened at the center of the top of the cover plate (4). The inner wall of the sealing plate (2) is fixedly connected to a guide column (6), and a discharge nozzle (7) is fixedly connected at the center of the bottom of the sealing plate (2). The inner cavity of the sealing plate (2) is fixedly connected to a ring exhaust fan (8), and the inner wall of the ring exhaust fan (8) is fixedly connected to several ventilation pipes (9). The outer wall of the ventilation pipes (9) penetrates and is fixedly connected to the inner cavity of the sealing plate (2). The buffer assembly includes a connecting block (10) fixedly connected to one side of the inner wall of the molding body (1), and an annular groove (11) is provided on one side of the inner wall of the connecting block (10). A first partition (12) is fixedly connected to the top of one side of the inner wall of the connecting block (10), and a second partition (13) is fixedly connected to the bottom of one side of the inner wall of the connecting block (10). The top of the second partition (13) is fixedly connected to the bottom of the sealing plate (2), and a heat-conducting pipe (14) is fixedly connected to one end of the outer wall of the first partition (12). A plurality of heat sinks (15) are fixedly connected to the outer wall of the heat-conducting pipe (14). A pressure plate (16) is rotatably connected between the first partition (12) and the second partition (13), and the pressure plate (16) is located in the annular groove (11). The outer wall of the pressure plate (16) is provided with tooth marks. An exhaust ring (17) is fixedly connected to the inner wall of the booster plate (16), and a fixed ring (18) is rotatably connected to one end of the top of the booster plate (16). The inner wall of the fixed ring (18) is fixedly connected to the bottom of one side of the outer wall of the second partition (13). A first air guide pipe (19) is fixedly connected to one end of the top of the fixed ring (18). The outer wall of the first air guide pipe (19) is fixedly connected to the inner cavity of the annular groove (11) and the molding body (1). A gas distributor (20) is fixedly connected to one end of the first air guide pipe (19). A gas storage chamber (21) is fixedly connected to one side of the outer wall of the gas distributor (20). An air inlet pipe (22) is fixedly connected to the input end of the top of the gas distributor (20). One end of the air inlet pipe (22) is fixedly connected to the output end of the gas storage chamber (21).

2. The atomization forming device for manufacturing fine aluminum powder according to claim 1, characterized in that: The output end of the gas distributor (20) is fixedly connected to a second gas guide pipe (23), and the outer wall of the second gas guide pipe (23) penetrates and is fixedly connected to the inner cavity of the molding body (1) and the second partition (13). The end of the second gas guide pipe (23) is fixedly connected to a support frame (24), and the outer wall of the support frame (24) is fixedly connected to the inner wall of the second partition (13). One end of the inner wall of the second partition (13) is fixedly connected to an arc-shaped block (25), and the inner wall of the arc-shaped block (25) is fixedly connected to a windbreak column (26).

3. The atomization forming device for manufacturing fine aluminum powder according to claim 2, characterized in that: The outer wall of the molding body (1) is fixedly connected to an electric telescopic platform (27), and the output end of the electric telescopic platform (27) is fixedly connected to a sealing plate (28). The inner wall of the sealing plate (28) is slidably connected to the outer wall of the molding body (1). The end of the outer wall of the molding body (1) near the electric telescopic platform (27) is fixedly connected to a first motor (29), and the output end of the first motor (29) is driven by a synchronous belt (30). The outer wall of the synchronous belt (30) penetrates the inner wall of the molding body (1). The end of the synchronous belt (30) is driven by a linkage gear rod (31), and one side of the outer wall of the linkage gear rod (31) meshes with the outer wall of the booster plate (16). Both ends of the linkage gear rod (31) are rotatably connected to a fixed frame (32), and the outer wall of the fixed frame (32) is fixedly connected to the inner wall of the molding body (1).

4. The atomization forming device for manufacturing fine aluminum powder according to claim 3, characterized in that: The outer wall of the molding body (1) is provided with a discharge groove (33) at one end, and an extension plate (34) is fixedly connected to the bottom of the inner wall of the discharge groove (33). Several support plates (35) are fixedly connected to the top of the extension plate (34), and the top of the support plate (35) is fixedly connected to the inner wall of the molding body (1). One end of the top of the extension plate (34) is in contact with the bottom of the sealing plate (28). A fan impeller (36) is rotatably connected between the extension plate (34) and the connecting block (10), and several air inlets (37) are provided at the bottom of the connecting block (10).

5. The atomization forming device for manufacturing fine aluminum powder according to claim 4, characterized in that: The outer wall of the molding body (1) is fixedly connected to a second motor (38) at one end near the gas distributor (20), and the output end of the second motor (38) is fixedly connected to a transmission gear rod (39). The outer wall of the transmission gear rod (39) is connected to the inner wall of the molding body (1) through and rotatably, and a gear ring (40) meshes with one side of the outer wall of the transmission gear rod (39), while the inner wall of the gear ring (40) is fixedly connected to one end of the outer wall of the fan impeller (36).

6. The atomization forming apparatus for manufacturing fine aluminum powder according to claim 5, characterized in that: The inner wall of the connecting block (10) is fixedly connected to one end near the annular groove (11) with an air extraction pipe (41), and the end of the air extraction pipe (41) is fixedly connected to an air pump (42), and the top of the air pump (42) is fixedly connected to a bubble chamber (43). The output end of the air pump (42) is fixedly connected to a connecting pipe (44), and the outer wall of the connecting pipe (44) is fixedly connected to an electrically controlled exhaust valve (45).

7. The atomization forming apparatus for manufacturing fine aluminum powder according to claim 6, characterized in that: The end of the connecting pipe (44) is fixedly connected to an exhaust plate (46), and the outer wall of the connecting pipe (44) is connected to the center of the bottom of the bubble chamber (43) through and fixedly connected. One side of the outer wall of the bubble chamber (43) is fixedly connected to the outer wall of the molding body (1). Several blocking blocks (47) are fixedly connected to the inner wall of the bubble chamber (43), and an inlet pipe (48) is fixedly connected to one end of the top of the bubble chamber (43).

8. The atomization forming apparatus for manufacturing fine aluminum powder according to claim 7, characterized in that: A connecting pipe (49) is fixedly connected to the top of one side of the outer wall of the bubble chamber (43), and the outer wall of the connecting pipe (49) penetrates and is fixedly connected to the inner cavity of the molding body (1). A ring exhaust fan (50) is fixedly connected to the end of the connecting pipe (49), and the outer wall of the ring exhaust fan (50) is fixedly connected to one end of the inner wall of the molding body (1).

9. A method for atomization forming in the manufacture of fine aluminum powder, the method employing the atomization forming apparatus for the manufacture of fine aluminum powder as described in claim 8, characterized in that: The method is as follows: S1: By setting a feed hole (5) at the center of the top of the cover plate (4), the molten aluminum liquid is then poured through the feed hole (5) onto the top of the guide column (6) set on the inner wall of the sealing plate (2), so that the aluminum liquid flows along the surface of the guide column (6) to the discharge nozzle (7) set at the bottom center of the sealing plate (2), and the atomized aluminum liquid is buffered by the buffer component set on the inner wall of the molding body (1); S2: The buffer assembly sets up a pressure plate (16) between the first partition (12) and the second partition (13), and continuously fills the pressure plate (16) with nitrogen through the first air guide pipe (19), and discharges it through the exhaust ring (17) so that the nitrogen moves upward along the inner wall of the first partition (12). Under the effect of airflow adhering to the wall, a high-speed flowing air film is formed on the inner wall of the first partition (12). At the same time, the nitrogen is discharged through the end of the second air guide pipe (23) and sprayed towards the bottom of the wind deflector (26) to form multiple uniform wind clusters. Under the impact of the air film and the wind clusters, the sprayed atomized aluminum liquid is evenly distributed in the first partition (12), thereby achieving the purpose of slowing down the fall of the atomized aluminum liquid. S3: By blowing the pure nitrogen gas discharged by the annular exhaust fan (50) onto the heat pipe (14) and heat sink (15), and then using the annular exhaust fan (8) set in the inner cavity of the sealing plate (2) to discharge the heated nitrogen gas through the vent pipe (9), the internal temperature of the first partition (12) is reduced while the nitrogen gas is reused.

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