A metal gas atomization apparatus

Abstract

The application discloses a metal gas atomization device, and relates to the technical field of metal gas atomization, and aims to solve the technical problem that the device is difficult to meet the processing requirements of diversified metal materials, which greatly influences the product quality of the gas atomization device processing, and comprises a gas atomization device body.The application can flexibly switch the working state according to the metal liquid viscosity through a variable centrifugal component, in the high-speed pushing state, the inclined surface design of the flow guide groove of the basic centrifugal structure is matched with the high-speed rotation of the centrifugal disc, so that the low-viscosity metal liquid is quickly thrown out along the flow guide groove, and a uniform liquid line is formed, when the extension resistance flow state is switched, the broken channel on the centrifugal fan plate cooperates with the broken baffle to make the high-viscosity metal liquid be fully broken.The application significantly improves the adaptability of the gas atomization device to different metal materials through the intelligent switching of the two working states, makes the metal powder particle size distribution more uniform, and greatly improves the product quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal gas atomization, more particularly to a metal gas atomization equipment. BACKGROUND

[0002] Metal gas atomization technology, as an important method for preparing metal powder, plays a key role in modern industry and is widely used in additive manufacturing, powder metallurgy, surface engineering and many other industries. Its principle is to use high-speed airflow to break the molten metal liquid stream into fine droplets, which are rapidly cooled and solidified to form metal powder. With the increasing demand for metal material performance in the manufacturing industry, higher standards for the quality, particle size distribution uniformity and production efficiency of metal powder have been put forward.

[0003] However, in the existing metal gas atomization equipment technology, there is a common defect of single centrifugal structure. In the production process, according to different orders, there is a need to handle low-viscosity metal liquid and high-viscosity metal liquid in the factory at some time. When handling low-viscosity metal liquid, an effective constraint mechanism is needed to prevent the metal liquid from forming irregular liquid flow under the action of centrifugal force. These irregular liquid flows are difficult to be uniformly broken in the subsequent atomization process, resulting in large differences in the particle size of the final produced metal powder, which seriously affects the stability of product quality. When facing high-viscosity metal liquid, sufficient breaking power is needed to make the metal liquid fully stretched and broken, so as to avoid the phenomenon of metal liquid agglomeration, which will lead to insufficient atomization process. Therefore, the existing single centrifugal structure cannot meet the processing needs of diversified metal materials, which greatly affects the product quality of the gas atomization equipment. In view of this, we propose a metal gas atomization equipment. SUMMARY

[0004] The purpose of the present application is to overcome the shortcomings of the prior art, adapt to the needs of reality, and provide a metal gas atomization equipment to solve the technical problem that the current equipment cannot meet the processing needs of diversified metal materials, which greatly affects the product quality of the gas atomization equipment.

[0005] To solve the above technical problems, the present application provides the following technical scheme: a metal gas atomization equipment, comprising a gas atomization equipment body, the gas atomization equipment body comprising an atomization system, the atomization system comprising a variable centrifugal assembly;

[0006] The variable centrifugal assembly has a high-speed pushing-out state and an extensional flow resistance state, and comprises a basic centrifugal structure and an extended centrifugal structure; the basic centrifugal structure comprises a centrifugal disc and guide grooves arranged radially on the centrifugal disc, the guide grooves are provided with inclined surfaces, and lower ends of the inclined surfaces are away from the center of the centrifugal disc; the extended centrifugal structure comprises a centrifugal fan plate, a breaking channel and a breaking baffle, the breaking channel is arranged at the edge of the centrifugal fan plate, and the breaking baffle is arranged at the outer edge of the breaking channel;

[0007] When in the high-speed pushing-out state, the centrifugal disc is retracted, and the basic centrifugal structure is used for centrifugal work on low-viscosity metal liquid and throws the metal liquid to a jetting device;

[0008] When in the extensional flow resistance state, the centrifugal disc is extended, the extended centrifugal structure is used for receiving the basic centrifugal structure, centrifugal work on high-viscosity metal liquid, and throwing the broken metal liquid to the jetting device.

[0009] Preferably, the breaking baffle is bent along the curved edge of the centrifugal fan plate, and a wave-shaped protrusion is arranged on the side of the breaking baffle facing the breaking channel.

[0010] Preferably, a receiving port is arranged at the top end of the centrifugal fan plate, the receiving port is communicated with radially distributed slow-flow channels, and the two sides of the slow-flow channels are both provided with slow-flow protrusions arranged in a staggered manner.

[0011] Preferably, the two sides of the slow-flow channel are both provided with slow-flow protrusions arranged in a staggered manner, the slow-flow protrusions are in a semi-cylindrical structure, a plurality of triangular flow-disturbing protrusions are equidistantly arranged on the inner side of the slow-flow channel, and one tip of the flow-disturbing protrusion faces the inlet of the flow-disturbing channel; when in the extensional flow resistance state, the receiving port is communicated with the guide grooves.

[0012] Preferably, a deformation driving structure is arranged on the variable centrifugal assembly, the deformation driving structure comprises a first motor, a driving shaft, a rotating disc, an arc groove, a driving rod, a driving arm, a limiting frame, an extension rod and a containing frame;

[0013] The driving shaft is installed at the output end of the first motor, the rotating disc is installed at the end of the driving shaft, a plurality of arc grooves are equidistantly and annularly arranged on the rotating disc, the driving rod is slidingly connected in the arc groove, the driving arm is installed at the end of the driving rod, the limiting frame is arranged below the rotating disc, a plurality of driving rods are respectively slidingly connected on a plurality of arms of the limiting frame, the extension rod is installed at the end of the driving arm, and the limiting frame is installed on the containing frame.

[0014] Preferably, the side surface of the containing frame is provided with a plurality of first through grooves adapted to the centrifugal fan plates, and a lifting plate is installed in the first through grooves, the bottom end of the centrifugal fan plate is provided with a guide plate, and the surface corresponding to the lifting plate of the guide plate is provided as an inclined upward surface, which is used to move the guide plate upward along the lifting plate when the guide plate contacts the lifting plate.

[0015] Preferably, the side surface of the containing frame is provided with a plurality of second through grooves adapted to the telescopic rods, and a matched shielding plate is rotatably connected in the second through grooves, and a torsional elastic member is installed at the connection between the shielding plate and the second through groove.

[0016] Preferably, an inclined angle is provided at the top end of the centrifugal fan plate, and the inclined angle is located at the side of the centrifugal fan plate close to the centrifugal disc.

[0017] Preferably, a flow resistance structure is further provided on the deformation driving structure, and the flow resistance structure comprises a flow resistance frame and a lifting rod; the flow resistance frame is slidably connected to the centrifugal disc, and the flow resistance frame is composed of a plurality of equidistantly arranged and gradually widened cross beams and a longitudinal beam connected to the cross beams; the bottom end of the flow resistance frame protrudes outward from the centrifugal disc, the lifting rod is attached to the protruding portion of the bottom end of the flow resistance frame, and the lifting rod is installed on the centrifugal fan plate.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] 1、The present application can switch the working state flexibly according to the viscosity of the metal liquid through the variable centrifugal assembly, in the high-speed pushing state, the inclined surface of the flow guide groove of the basic centrifugal structure is designed to cooperate with the high-speed rotation of the centrifugal disc, so that the low-viscosity metal liquid is quickly thrown out along the flow guide groove, forming a uniform liquid line and improving the atomization efficiency; when processing high-viscosity metal liquid, the extension flow resistance state is switched to, after the centrifugal fan plate is extended, the breaking channel on the centrifugal fan plate works cooperatively with the breaking baffle, so that the high-viscosity metal liquid is subjected to multiple impacts and stretching, realizing sufficient breaking and effectively avoiding the agglomeration of metal liquid. Through the intelligent switching of the two working states, the adaptability of the gas atomization equipment to different metal materials is significantly improved, the particle size distribution of the metal powder is more uniform, and the product quality is greatly improved.

[0020] 2. This invention utilizes a variable centrifugal component. Traditional atomizing equipment has a simple centrifugal structure. When processing low-viscosity molten metal, the lack of an effective constraint structure causes the molten metal to easily form irregular liquid flows under centrifugal force, resulting in uneven metal powder particle size. Conversely, when processing high-viscosity molten metal, insufficient centrifugal force and poor crushing effect lead to metal agglomeration and incomplete atomization. The variable centrifugal component allows for flexible switching of operating states based on the viscosity of the molten metal. In high-speed ejection mode, the inclined surface design of the guide channel in the basic centrifugal structure, combined with the high-speed rotation of the centrifugal disc, allows low-viscosity molten metal to be quickly ejected along the guide channel, forming a uniform liquid line and improving atomization efficiency. When processing high-viscosity molten metal, the system switches to extended obstruction mode. After the centrifugal fan extends, the crushing channels and crushing baffles on the centrifugal fan work together to subject the high-viscosity molten metal to multiple impacts and stretching, achieving thorough crushing and effectively preventing metal agglomeration. This invention significantly improves the adaptability of the atomizing equipment to different metal materials through intelligent switching between two operating states, resulting in more uniform metal powder particle size distribution and a substantial improvement in product quality.

[0021] 3. This invention utilizes a receiving interface at the top of the centrifugal fan plate, connected to radial slow-flow channels. The receiving interface serves as a hub for the transition of molten metal from the basic centrifugal structure to the extended centrifugal structure. It ensures that the molten metal flows smoothly into the slow-flow channels with minimal resistance after the centrifugal fan plate extends. The radially distributed slow-flow channels evenly disperse the molten metal into each crushing area. Compared to traditional straight-tube transmission pipes, the radial slow-flow channels extend the flow path of the molten metal, significantly increasing its residence time within the channels. This invention effectively reduces the flow velocity and surface tension of the molten metal through the slow-flow channels, allowing high-viscosity molten metal to undergo preliminary dispersion before entering the crushing channels, thereby improving overall crushing efficiency.

[0022] 4. This invention utilizes a unique protrusion structure on both sides and the inner side of the slow-flow channel. The channel is adorned with staggered semi-cylindrical protrusions on both sides. As the molten metal flows along the channel under centrifugal force, the protrusions continuously change the flow direction of the molten metal, forcing it to spiral and reduce its velocity. This prevents insufficient atomization due to excessive flow speed. Meanwhile, the triangular turbulence protrusions evenly spaced on the inner side of the channel cause the high-speed flowing molten metal to be split into multiple fine streams upon impact with their sharp tips, forming a strong vortex behind the protrusions. This vortex further intensifies the internal dispersion of the molten metal. Combined with the deceleration effect of the slow-flow protrusions, the molten metal is initially refined before entering the atomization channel. Through this protrusion structure, when the equipment is in an extended, obstructed flow state, the molten metal undergoes both slow-flow and turbulence treatments, resulting in a more uniform and easily atomized state before entering the next process, significantly improving the particle size uniformity and atomization efficiency of the metal powder.

[0023] 5、The present application sets the shielding plate with torsional elastic member on the side of the containing frame, when the deformation drive structure starts, the telescopic rod pushes the lifting plate along the second through slot, the shielding plate is extruded by the telescopic rod and rotates against the resistance of the torsional elastic member, which makes room for the telescopic rod, and after the telescopic rod resets, the shielding plate rebounds quickly under the action of the torsional elastic member, tightly fits the second through slot, forms a reliable sealing structure, prevents the metal melt from splashing or foreign matter from entering the inside of the containing frame. The present application can ensure that the metal melt does not enter the inside of the variable centrifugal assembly when it is in high-speed pushing state, and improves the reliability and durability of the metal gas atomization equipment.

[0024] 6、The present application adds the flow resistance structure in the deformation drive structure, when the variable centrifugal assembly is in high-speed pushing state to handle low-viscosity metal liquid, the flow resistance frame is located inside the centrifugal disc, has small resistance to the metal liquid, and the metal liquid can be smoothly thrown out under the action of the centrifugal force, and when the assembly switches to the extension flow resistance state to handle high-viscosity metal liquid, the centrifugal fan plate is extended, the lifting rod is lifted and pushes the flow resistance frame to slide upwards along the centrifugal disc, at this time, the gradually widened cross beams of the flow resistance frame are sequentially contacted with the metal liquid, the resistance is gradually increased, and the vertical beam ensures the stability of the overall structure of the flow resistance frame to prevent deformation under the impact of the metal liquid. The present application can reduce the flow speed of the high-viscosity metal liquid when flowing through the centrifugal disc, and effectively avoids the problem of insufficient fragmentation caused by too fast throwing speed of the metal liquid. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present application.

[0026] Figure 2 It is a structural schematic diagram of the atomization system of the present application.

[0027] Figure 3 It is a sectional view of the atomization system of the present application.

[0028] Figure 4 It is a structural schematic diagram of the variable centrifugal assembly, the deformation drive structure and the centrifugal drive structure of the present application.

[0029] Figure 5 It is a structural schematic diagram of the variable centrifugal assembly of the present application.

[0030] Figure 6 It is a structural schematic diagram of the variable centrifugal assembly of the present application without the centrifugal disc.

[0031] Figure 7 It is a top view of the internal structure of the variable centrifugal assembly of the present application.

[0032] Figure 8 It is a bottom view of the internal structure of the variable centrifugal assembly of the present application.

[0033] Figure 9 This is a schematic diagram of the centrifugal fan plate of the present invention.

[0034] Figure 10 This is a schematic diagram of the structure of the shielding plate of the present invention.

[0035] Figure 11 This is a schematic diagram of the flow barrier structure of the present invention.

[0036] Figure 12 This is a schematic diagram of the structure of the present invention in the extended flow-blocking state.

[0037] Figure 13 This is a schematic diagram of the internal structure of the present invention in the extended flow-blocking state.

[0038] Explanation of the labels in the diagram:

[0039] 1. Air atomizing device body; 2. Atomizing system; 3. Variable centrifugal component; 4. Deformation drive structure; 5. Centrifugal drive structure; 6. Flow obstruction structure;

[0040] 301. Basic centrifuge structure; 302. Extended centrifuge structure;

[0041] 3011, Centrifugal disc; 3012, Flow guide channel;

[0042] 3021. Centrifugal fan plate; 3022. Crushing channel; 3023. Crushing baffle; 3024. Receiver; 3025. Slow flow channel; 3026. Slow flow protrusion; 3027. Turbulence protrusion; 3028. Guide plate; 3029. Angled;

[0043] 401. First motor; 402. Drive shaft; 403. Rotary disk; 404. Arc groove; 405. Drive rod; 406. Drive arm; 407. Limiting frame; 408. Telescopic rod; 409. Receiving frame;

[0044] 4091, Lifting plate; 4092, Baffle plate; 4093, Torsional elastic element;

[0045] 501. Second motor; 502. Transmission wheel; 503. Transmission belt; 504. Drive column; 505. Conveying channel; 506. Conveying sleeve;

[0046] 601. Flow control frame; 602. Lifting rod. Detailed Implementation

[0047] Example 1, as Figures 1 to 13 As shown, the present invention relates to a metal gas atomizing device, including a gas atomizing device body 1, the gas atomizing device body 1 including an atomizing system 2, and the atomizing system 2 including a variable centrifugal component 3.

[0048] The variable centrifugal assembly 3 has a high-speed pushing-out state and an extension flow resistance state, and comprises a basic centrifugal structure 301 and an extended centrifugal structure 302; the basic centrifugal structure 301 comprises a centrifugal disc 3011 and a flow guide groove 3012, the flow guide groove 3012 is arranged on the centrifugal disc 3011 in a radial manner, the flow guide groove 3012 is provided with an inclined surface, and the lower end of the inclined surface is away from the center of the centrifugal disc 3011; the extended centrifugal structure 302 comprises a centrifugal fan plate 3021, a breaking channel 3022 and a breaking baffle 3023, the breaking channel 3022 is arranged at the edge of the centrifugal fan plate 3021, and the breaking baffle 3023 is arranged at the outer edge of the breaking channel 3022.

[0049] When in the high-speed pushing-out state, the centrifugal disc 3011 is retracted, and the basic centrifugal structure 301 is used for centrifugal work on low-viscosity metal liquid, and the metal liquid is thrown out to the air injection equipment;

[0050] When in the extension flow resistance state, the centrifugal disc 3011 is extended, and the extended centrifugal structure 302 is used for receiving the basic centrifugal structure 301 to perform centrifugal work on high-viscosity metal liquid, and the broken metal liquid is thrown out to the air injection equipment.

[0051] The variable centrifugal assembly 3 can be switched flexibly according to the viscosity of the metal liquid, in the high-speed pushing-out state, the inclined surface of the flow guide groove 3012 of the basic centrifugal structure 301 is designed in cooperation with the high-speed rotation of the centrifugal disc 3011, so that the low-viscosity metal liquid is quickly thrown out along the flow guide groove 3012 to form a uniform liquid line and improve the atomization efficiency, when processing high-viscosity metal liquid, the extended centrifugal structure 302 is switched to the extension flow resistance state, after the centrifugal fan plate 3021 is extended, the breaking channel 3022 on the centrifugal fan plate 3021 works in cooperation with the breaking baffle 3023 to make the high-viscosity metal liquid be impacted and stretched for multiple times, so that the metal liquid is fully broken and the metal liquid agglomeration phenomenon is effectively avoided. Through the intelligent switching of the two working states, the adaptability of the air atomization equipment to different metal materials is significantly improved, the metal powder particle size distribution is more uniform, and the product quality is greatly improved.

[0052] Specifically, as shown in the drawings, Figure 9 The breaking baffle 3023 is bent along the curved edge of the centrifugal fan plate 3021, and the side of the breaking baffle 3023 facing the breaking channel 3022 is provided with a wave-shaped protrusion.

[0053] The broken baffle 3023 is bent along the curved edge of the centrifugal fan plate 3021, and the wavy protrusions are arranged on the side of the broken baffle 3023 facing the broken channel 3022, the bent broken baffle 3023 is fitted with the arc trajectory of the centrifugal fan plate 3021, the metal liquid is forced to change the flow direction under the action of centrifugal force for multiple times, and the residence time of the metal liquid in the broken area is prolonged, at the same time, the wavy protrusions further increase the contact area and collision times of the metal liquid and the baffle, when the metal liquid high-speed impacts the protrusions, the protrusions and recessed structures can tear the metal liquid into smaller droplets, and the breaking effect is significantly enhanced.

[0054] It is worth noting that, as shown in Figure 9 The top end of the centrifugal fan plate 3021 is provided with a receiving port 3024, and the receiving port 3024 is communicated with the slow-flow channels 3025 distributed in a radial manner.

[0055] The slow-flow channels 3025 are provided with the slow-flow protrusions 3026 distributed in a staggered manner, the slow-flow protrusions 3026 are in a semicylindrical structure, four triangular turbulence protrusions 3027 are installed at the inner side of the slow-flow channels 3025 at equal intervals, and one tip of the turbulence protrusions 3027 faces the inlet of the turbulence channel; when in the extended resistance flow state, the receiving port 3024 is communicated with the flow guide groove 3012.

[0056] The receiving port 3024 is used as the hub for the transition of the metal liquid from the basic centrifugal structure 301 to the extended centrifugal structure 302, which ensures that the metal liquid can smoothly flow into the slow-flow channels 3025 with the smallest resistance after the centrifugal fan plate 3021 is extended, the slow-flow channels 3025 distributed in a radial manner can uniformly disperse the metal liquid to each broken area, compared with the traditional straight cylinder type transmission pipeline, the slow-flow channels 3025 distributed in a radial manner can prolong the flow path of the metal liquid, so that the residence time of the metal liquid in the channel is significantly increased, and the flow rate and surface tension of the metal liquid can be effectively reduced by the slow-flow channels 3025, so that the high-viscosity metal liquid can be preliminarily dispersed before entering the broken channel 3022, thereby improving the overall breaking efficiency.

[0057] The present application sets up unique protruding block structure on both sides and inner side of the slow flow channel 3025, and the slow flow channel 3025 passes through the staggered distribution semicylindrical slow flow protruding block 3026 on both sides, when the metal liquid flows along the channel under the action of centrifugal force, the protruding block constantly changes the flow direction of the metal liquid, forces the metal liquid to generate spiral bypass, reduces the flow rate of the metal liquid, avoids the problem of insufficient fragmentation caused by too fast flow rate, and the equidistantly arranged triangular turbulence protruding block 3027 in the channel, when the high-speed flowing metal liquid hits the sharp tip of the turbulence protruding block 3027, the metal liquid is split into multiple streams, and strong vortex is formed behind the protruding block, the vortex further intensifies the internal dispersion of the metal liquid, cooperates with the speed reduction effect of the slow flow protruding block 3026, so that the metal liquid realizes preliminary refinement before entering the fragmentation channel 3022. Through the protruding block structure, when the equipment is in the extension resistance flow state, the metal liquid can be subjected to double treatment of slow flow and turbulence, so that the metal liquid enters the next process in a more uniform and more easily fragmented state, and the particle size uniformity and atomization efficiency of the metal powder are significantly improved.

[0058] Further, as shown in Figures 6 to 8 The variable centrifugal assembly 3 is provided with a deformation driving structure 4, the deformation driving structure 4 comprises a first motor 401, a driving shaft 402, a rotating disc 403, an arc groove 404, a driving rod 405, a driving arm 406, a limiting frame 407, a telescopic rod 408 and a containing frame 409; the driving shaft 402 is installed at the output end of the first motor 401, the rotating disc 403 is installed at the end of the driving shaft 402, five arc grooves 404 are opened in the rotating disc 403 in equidistant annular form, the driving rod 405 is slidably connected in the arc groove 404, the driving arm 406 is installed at the end of the driving rod 405, the limiting frame 407 is arranged below the rotating disc 403, and the five driving rods 405 are slidably connected on the five supporting arms of the limiting frame 407 respectively, the telescopic rod 408 is installed at the end of the driving arm 406, and the limiting frame 407 is installed on the containing frame 409.

[0059] The centrifugal driving structure 5 comprises a second motor 501, a transmission wheel 502, a transmission belt 503, a driving column 504, a conveying sleeve 506 and a conveying channel 505; the transmission wheel 502 is installed at the output end of the second motor 501, another transmission wheel 502 is connected to the transmission wheel 502 through the transmission belt 503, the driving column 504 is connected to the other transmission wheel 502, the conveying sleeve 506 is rotatably connected to the top end of the driving column 504, and the conveying sleeve 506 is connected to an external metal melt conveying equipment, five conveying channels 505 are opened in the driving column 504 in equidistant annular form, and the outlet ends of the five conveying channels 505 are located above the corresponding five flow guide grooves 3012 respectively.

[0060] The side equidistant annular of the containing frame 409 is provided with five first through grooves matched with the centrifugal fan plates 3021, and the first through grooves are provided with the jacking plates 4091, the bottom end of the centrifugal fan plates 3021 is provided with the guide plates 3028, and the corresponding surface of the guide plates 3028 and the jacking plates 4091 is provided as an inclined upward surface, so that the guide plates 3028 move upward along the jacking plates 4091 when the guide plates 3028 contact the jacking plates 4091.

[0061] The top end side of the centrifugal fan plates 3021 is provided with the inclined angle 3029, and the inclined angle 3029 is located on the side close to the centrifugal disc 3011.

[0062] The first motor 401 drives the driving shaft 402 to rotate in the deformation driving structure 4, the rotating disc 403 rotates, the driving rod 405 is guided by the sliding fit limiting frame 407 in the arc groove 404, the driving arm 406 accurately controls the telescopic rod 408 to extend and retract, the centrifugal fan plates 3021 stably extend along the first through grooves, the jacking plates 4091 contact the guide plates 3028 when the telescopic rod 408 retracts to the end, and the inclined upward surface of the guide plates 3028 is pushed to be in close contact with the jacking plates 4091, the telescopic rod 408 is elongated under the jacking force, the centrifugal fan plates 3021 can be lifted to be parallel to the centrifugal disc 3011 through the inclined angle 3029, and the conversion from the high-speed pushing state to the extended flow resistance state is completed.

[0063] In the centrifugal driving structure 5, the second motor 501 drives the driving column 504 to rotate through the transmission wheel 502 and the transmission belt 503, the external metal melt enters the five conveying channels 505 in the driving column 504 through the conveying sleeve 506, the outlet accurately corresponds to the upper side of the flow guide groove 3012, so that the metal liquid is injected into the centrifugal disc 3011 in a tangent direction, the annular symmetrical conveying design is matched with the inclined surface of the flow guide groove 3012, so that the metal liquid forms a stable spiral throwing track under the action of the centrifugal force.

[0064] Further, as shown in the drawings, Figures 5 to 10 The side equidistant annular of the containing frame 409 is provided with five second through grooves matched with the telescopic rods 408, and the second through grooves are rotatably connected with the matched shielding plates 4092, and the connecting part between the shielding plates 4092 and the second through grooves is provided with the torsional elastic members 4093.

[0065] The present application sets the shielding plate 4092 with torsional elastic member 4093 on the side of the containing frame 409, when the deformation driving structure 4 is started, the telescopic rod 408 pushes the lifting plate 4091 along the second through slot, the shielding plate 4092 is extruded by the telescopic rod 408 to overcome the resistance of the torsional elastic member 4093 and rotate, and the space for the telescopic rod 408 is left, after the telescopic rod 408 resets, the shielding plate 4092 rebounds rapidly under the action of the torsional elastic member 4093, tightly fits the second through slot, forms a reliable sealing structure, prevents the metal melt from splashing or foreign matter from entering the inside of the containing frame 409.

[0066] Further, as shown in Figures 6 to 11 The present application relates to the deformation driving structure 4, and the deformation driving structure 4 is further provided with the flow resistance structure 6, the flow resistance structure 6 includes the flow resistance frame 601 and the lifting rod 602, the flow resistance frame 601 is slidably connected to the centrifugal disc 3011, the flow resistance frame 601 is composed of three equidistantly arranged and gradually widened cross beams and a longitudinal beam connected to the three cross beams, the bottom end of the flow resistance frame 601 protrudes to the outside of the centrifugal disc 3011, the lifting rod 602 is attached to the protruding part of the bottom end of the flow resistance frame 601, and the lifting rod 602 is installed on the centrifugal fan plate 3021.

[0067] The present application adds the flow resistance structure 6 in the deformation driving structure 4, when the variable centrifugal assembly 3 is in the high-speed pushing-out state to process low-viscosity metal liquid, the flow resistance frame 601 is located inside the centrifugal disc 3011, has a small resistance to the metal liquid, and the metal liquid can be smoothly thrown out under the action of the centrifugal force, and when the assembly is switched to the extension flow resistance state to process high-viscosity metal liquid, the centrifugal fan plate 3021 is extended, the lifting rod 602 is lifted and pushes the flow resistance frame 601 to slide upward along the centrifugal disc 3011, at this time, the gradually widened cross beams of the flow resistance frame 601 are sequentially contacted with the metal liquid, the resistance is gradually increased, and the longitudinal beam ensures the stability of the overall structure of the flow resistance frame 601 to prevent deformation under the impact of the metal liquid.

[0068] As shown in Figures 1 to 13 The present application relates to a method for using the metal gas atomization equipment, and the method includes the following steps:

[0069] S1, Preparation before the device starts: According to the viscosity characteristics of the metal liquid to be processed, set the initial working state of the variable centrifugal assembly 3 in the device control system; If it is low viscosity metal liquid, set the variable centrifugal assembly 3 to high speed push out state; If it is high viscosity metal liquid, set to extension resistance flow state; In addition, according to the characteristics of metal materials, the speed of the second motor 501 in the centrifugal driving structure 5 is reasonably adjusted to control the rotation speed of the centrifugal disc 3011, so as to meet the centrifugal processing needs of different metal liquids, at the same time, the related parameters of the first motor 401 in the deformation driving structure 4 are set, to prepare for the subsequent working state switching.

[0070] S2, Metal melt delivery and centrifugal processing: Start the external metal melt delivery equipment, so that the metal melt enters the driving column 504 of the centrifugal driving structure 5 through the delivery sleeve 506. In the centrifugal driving structure 5, the second motor 501 drives the driving column 504 to rotate through the transmission wheel 502 and the transmission belt 503. Since the five delivery channels 505 are equally annularly arranged in the driving column 504, and the outlet end accurately corresponds to the upper part of the flow guide groove 3012, the metal liquid is injected into the centrifugal disc 3011 in a tangent direction;

[0071] When the variable centrifugal assembly 3 is in high speed push out state, the centrifugal fan plate 3021 is retracted, the basic centrifugal structure 301 starts to work, the metal liquid is quickly thrown out along the inclined surface of the flow guide groove 3012 under the action of centrifugal force, forming a uniform liquid line, which is thrown out to the jet equipment for atomization treatment. In this process, due to the design of the inclined surface of the flow guide groove 3012, the low viscosity metal liquid can flow smoothly along the flow guide groove 3012, reducing the irregular flow phenomenon caused by poor flow, ensuring the uniformity of the metal liquid throwing, and thus improving the atomization efficiency;

[0072] If it is in extension resistance flow state, the centrifugal disc 3011 is extended, and the extension centrifugal structure 302 receives the basic centrifugal structure 301; The metal liquid first enters the slow flow channel 3025 distributed in a radial manner through the receiving port 3024 at the top of the centrifugal fan plate 3021. The semicircular cylinder-shaped flow blocking bump 3026 distributed on both sides of the slow flow channel 3025 changes the flow direction of the metal liquid constantly, forcing the metal liquid to produce spiral circling and reducing its flow rate. The triangular flow disturbance bump 3027 arranged equidistantly inside the channel splits the high-speed flowing metal liquid into multiple streams and forms strong vortex behind the bump, further intensifying the internal dispersion of the metal liquid, so that the high viscosity metal liquid completes preliminary refinement before entering the breaking channel 3022. Subsequently, the metal liquid enters the breaking channel 3022 at the edge of the centrifugal fan plate 3021, and is subjected to multiple impacts and stretching under the action of the breaking baffle 3023 outside the breaking channel 3022, so as to realize sufficient breaking, and finally is thrown out to the jet equipment;

[0073] S3, switching of the working state: in the process of equipment operation, if it is required to switch the working state of the variable centrifugal assembly 3 according to the change of the metal liquid viscosity or the production process requirement, the deformation driving structure 4 is started; when switching from the high-speed pushing-out state to the extension flow resistance state, the first motor 401 drives the driving shaft 402 to rotate, the rotating disc 403 rotates, the driving rod 405 slides in the arc groove 404, the guide of the limiting frame 407 is matched, the driving arm 406 controls the telescopic rod 408 to extend and retract, the centrifugal fan plate 3021 stably extends along the first through groove on the side of the containing frame 409; when the centrifugal fan plate 3021 extends to the end, the jacking plate 4091 is in contact with the guide plate 3028 at the bottom end of the centrifugal fan plate 3021, the inclined rising surface of the guide plate 3028 is matched with the jacking plate 4091, the telescopic rod 408 is elongated under the action of the jacking force, the inclined angle 3029 at the top end of the centrifugal fan plate 3021 is passed through, so that the centrifugal fan plate 3021 is raised to be parallel to the centrifugal disc 3011, and the state conversion is completed; at this time, the jacking rod 602 in the flow resistance structure 6 is raised along with the centrifugal fan plate 3021, the flow resistance frame 601 is pushed to slide upward along the centrifugal disc 3011, the gradually widened cross beams of the flow resistance frame 601 are sequentially in contact with the metal liquid, the flow rate of the high-viscosity metal liquid is reduced, and the breaking effect is ensured;

[0074] Conversely, when switching from the extension flow resistance state back to the high-speed pushing-out state, the first motor 401 is reversely rotated, the telescopic rod 408 is retracted, the centrifugal fan plate 3021 is stably retracted along the first through groove under the cooperation of the gravity and the related structure, the flow resistance frame 601 is also reset, and the equipment returns to the working mode of the high-speed pushing-out state.

[0075] S4, atomization and collection of the metal liquid: whether in the high-speed pushing-out state or the extension flow resistance state, the metal liquid after the centrifugal treatment is thrown to the jet equipment, under the impact action of the high-pressure gas, the metal liquid is further broken into fine metal powder, the metal powder is driven into the subsequent collection device under the action of the gas flow, the collection device usually adopts multiple ways such as filtration and cyclone separation to separate the metal powder from the gas, and high-efficiency collection of the metal powder is realized. During the collection process, the collection device needs to be cleaned regularly to prevent the metal powder from being accumulated too much to affect the collection effect and the normal operation of the equipment.

[0076] The embodiments of the present application are disclosed, but the present application is not limited to this, and those skilled in the art can easily understand the spirit of the present application according to the above embodiments, and make different inferences and changes, as long as they do not deviate from the spirit of the present application, they are within the protection scope of the present application.

Claims

1. A metal gas atomization device, characterized in that, It includes a gas atomizing device body, the gas atomizing device body includes an atomizing system, and the atomizing system includes a variable centrifugal component; The variable centrifugal assembly has a high-speed ejection state and an extended flow-blocking state, including a basic centrifugal structure and an extended centrifugal structure; the basic centrifugal structure includes a centrifugal disc and a flow guide channel, the flow guide channel is arranged radially on the centrifugal disc, the flow guide channel is provided with an inclined surface, and the lower end of the inclined surface is far away from the center of the centrifugal disc; the extended centrifugal structure includes a centrifugal fan plate, a crushing channel and a crushing baffle, the crushing channel is located at the edge of the centrifugal fan plate, and a crushing baffle is provided at the outer edge of the crushing channel; When in the high-speed ejection state, the centrifugal disc retracts, and the basic centrifugal structure is used to centrifuge the low-viscosity molten metal and throw the molten metal out to the jetting device. When in the extended flow-blocking state, the centrifugal disc extends, and the extended centrifugal structure is used to support the basic centrifugal structure, to centrifuge the high-viscosity molten metal, and to throw the broken molten metal out to the jetting equipment. The top of the centrifugal fan plate is provided with a receiving interface, and the receiving interface is connected to radially distributed slow-flow channels. Both sides of the flow-slowing channel are provided with staggered flow-slowing protrusions. The flow-slowing protrusions are semi-cylindrical structures. Several triangular flow-disrupting protrusions are installed at equal intervals on the inner side of the flow-slowing channel, and one tip of the flow-disrupting protrusion faces the inlet of the flow-disrupting channel. When in the extended flow-blocking state, the receiving interface is connected to the flow guide groove. The variable centrifugal assembly is provided with a deformation drive structure, which includes a first motor, a drive shaft, a rotating disk, an arc groove, a drive rod, a drive arm, a limiting frame, a telescopic rod, and a receiving frame. The drive shaft is installed at the output end of the first motor, the rotating disk is installed at the end of the drive shaft, a plurality of arc grooves are equidistantly and annularly formed on the rotating disk, the drive rod is slidably connected in the arc groove, the drive arm is installed at the end of the drive rod, the limiting frame is set below the rotating disk, and a plurality of drive rods are slidably connected to a plurality of arms of the limiting frame, the telescopic rod is installed at the end of the drive arm, and the limiting frame is installed on the receiving frame. The side of the receiving frame is provided with several first through slots that are adapted to the centrifugal fan plate at equal intervals. A lifting plate is installed in the first through slot. A guide plate is installed at the bottom of the centrifugal fan plate. The surface of the guide plate corresponding to the lifting plate is set as an inclined rising surface. The inclined rising surface is used to make the guide plate move upward along the lifting plate when it contacts the lifting plate.

2. The metal gas atomizing device according to claim 1, characterized in that, The crushing baffle is bent along the curved edge of the centrifugal fan plate, and the side of the crushing baffle facing the crushing channel is provided with wavy protrusions.

3. The metal gas atomizing device according to claim 1, characterized in that, The side of the receiving frame is provided with several second through slots that are adapted to the telescopic rod, and a matching baffle plate is rotatably connected in the second through slot. A torsional elastic element is installed at the connection between the baffle plate and the second through slot.

4. The metal gas atomizing device according to claim 3, characterized in that, The top of the centrifugal fan plate has an angled opening on one side, and the angled opening is located on the side of the centrifugal fan plate closest to the centrifugal disc.

5. A metal gas atomizing device according to claim 4, characterized in that, The centrifugal drive structure includes a second motor, a transmission wheel, a transmission belt, a drive column, a conveyor sleeve, and a conveyor channel; The transmission wheel is installed at the output end of the second motor. The transmission wheel is connected to another transmission wheel via a transmission belt. The drive column is connected to the other transmission wheel. The conveying sleeve is rotatably connected to the top of the drive column and is connected to an external molten metal conveying device. Several conveying channels are equidistantly and annularly opened inside the drive column, and the outlet ends of several conveying channels are respectively located above several corresponding guide grooves.

6. A metal gas atomizing device according to claim 5, characterized in that, The deformation drive structure is also provided with a flow-blocking structure, which includes a flow-blocking frame and a lifting rod. The flow-blocking frame is slidably connected to the centrifugal disc. The flow-blocking frame consists of several equidistantly arranged and gradually widening crossbeams, and a longitudinal beam connecting the crossbeams. One side of the bottom end of the flow-blocking frame protrudes outside the centrifugal disc. The lifting rod is attached to the protruding part at the bottom end of the flow-blocking frame and is mounted on the centrifugal fan plate.

Images