A slag removal and screening device for the production of aluminum alloy powder

Abstract

This invention belongs to the field of aluminum powder screening equipment, specifically relating to a slag removal screening device for alloy aluminum powder production. Addressing the problems existing in the prior art, this invention provides a slag removal screening device for alloy aluminum powder production, comprising a shell and a multi-layer screening tower fixedly connected to the inner side of the shell. An outlet check valve and an inlet check valve are fixedly connected and connected to the surface of the shell. The inlet check valve is used to connect to an inert gas injection device. During screening, the cooperation of the outlet and inlet check valves creates a gas circulation channel, allowing inert gas to be injected into the shell and internal air to be discharged, establishing a continuous and stable oxygen-free protective atmosphere. This prevents dust from clogging the screen holes due to electrostatic adsorption and avoids the risk of dust spontaneous combustion.

Description

Technical Field

[0001] This invention belongs to the field of aluminum powder screening equipment, specifically relating to a slag removal screening device for the production of alloy aluminum powder. Background Technology

[0002] Aluminum alloy powder is an important metal powder material in industrial production, widely used in metallurgy, chemical industry, new energy, powder metallurgy, and high-end manufacturing. Its particle uniformity and purity directly determine product quality and performance. In the industrial production of aluminum alloy powder, after atomization and cooling, molten aluminum inevitably mixes with oxide slag, agglomerated particles, large impurities, and irregularly shaped debris. If not removed promptly, this will severely affect the powder's flowability and dispersibility, leading to defects such as porosity, cracks, and insufficient strength in subsequently processed parts, significantly reducing product qualification rate and market competitiveness.

[0003] Currently, commonly used screening equipment in the industry mainly includes vibrating screens, air classifiers, and drum screens, such as Chinese patents with application numbers CN202211543965.6, CN202222591426.1, and CN202422063920.X. During screening, these devices operate in an open or semi-open environment. Alloy aluminum powder is highly active, easily oxidized, and prone to spontaneous combustion when exposed to oxygen, posing a significant safety hazard in an open environment. Furthermore, traditional screens exhibit electrostatic reactions during the screening process, easily leading to powder adhesion and screen blockage, especially severe blockage during fine powder screening, requiring frequent shutdowns for cleaning, resulting in low screening efficiency and poor continuity. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems existing in the prior art and to realize a slag removal and screening device for the production of aluminum alloy powder.

[0005] To achieve the above-mentioned objectives, the technical solution of the present invention is: a slag removal and screening device for the production of aluminum alloy powder, comprising a shell and a multi-layer screening tower fixedly connected to the inner side of the shell; A discharge shell is fixedly connected to and connected to the outer side of the shell. A feed valve is fixedly connected to and connected to the upper end of the discharge shell. Multiple discharge valves are fixedly connected to and connected to the bottom of the shell. An exhaust check valve and an intake check valve are fixedly connected to and connected to the surface of the shell. The intake check valve is used to connect to an inert gas injection device. A material guiding assembly is fixedly connected to the inner wall of the shell to allow the material in the discharge shell to enter the multi-layer screening tower. A baffle assembly for controlling the connection state between the shell and the discharge shell is rotatably connected to the surface of the shell. The lower part of the shell has multiple placement spaces, and the discharge valves are connected to the corresponding placement spaces respectively; the multi-layer screening tower has multiple discharge ends, which are located on the upper side of the corresponding placement spaces, for discharging materials of different mesh sizes.

[0006] Preferably, the multi-layer screening tower further includes a screening cylinder, and a vertically arranged feeding cylinder is coaxially fixedly connected inside the screening cylinder. Rectangular openings are respectively opened on the upper and lower sides of the surface of the feeding cylinder for feeding and discharging. The feed cylinder is rotatably connected to a drive shaft coaxially inside. A spiral blade is fixedly connected to the lower surface of the drive shaft, and the outer side of the spiral blade is in contact with the inner wall of the feed cylinder. A drive motor is fixedly connected to the bottom of the screening cylinder, and the power output end of the drive motor is fixedly connected to the bottom of the drive shaft coaxially.

[0007] Preferably, the interior of the screening cylinder is provided with a first screening disc, a first collecting disc, a guide disc, a second screening disc, a second collecting disc, and a guide hopper from top to bottom; the screening mesh number of the first screening disc is smaller than that of the second screening disc, and the rectangular opening on the upper side of the upper feed cylinder surface is located on the upper side of the first screening disc; the guide disc and the guide hopper are fixedly connected to the inner wall of the screening cylinder; Two sets of rotary vibration components are installed on the surface of the feeding cylinder. The first screening disc and the second screening disc are respectively connected to the corresponding rotary vibration components. The first collecting disc and the second collecting disc are respectively fixedly connected to the feeding cylinder. The outer ends of the first screening disc and the second screening disc are respectively inclined downward. The outer diameter of the guide disc is larger than the diameter of the first screening disc, so that the guide disc can receive the material flowing down from the first screening disc. The inner end of the guide disc is located on the upper side of the second screening disc. The lower sides of the first collection tray, the second collection tray, and the guide hopper are respectively fixedly connected to and connected to the first discharge pipe, the second discharge pipe, and the third discharge pipe. The outlets of the first discharge pipe, the second discharge pipe, and the third discharge pipe serve as discharge ends and are located on the upper side of the corresponding placement space.

[0008] Preferably, the rotary vibration assembly includes a guide toothed ring fixedly connected to the surface of the feed cylinder, a rotating ring rotatably connected to the surface of the guide toothed ring, a vibration ring slidably connected to the surface of the rotating ring along the axial direction, a plurality of return springs fixedly connected to the upper end of the vibration ring, and the upper ends of the return springs respectively fixedly connected to the rotating ring; the first screening disc and the second screening disc are respectively fixedly connected to the corresponding vibration rings by bolts. An internal gear ring is fixedly connected to the inner side of the rotating ring. Multiple connecting gears mesh with the inner side of the internal gear ring. A transmission shaft is fixedly connected coaxially between the connecting gears on the upper and lower sides. The transmission shaft is rotatably connected to the rotating ring. A planetary gear transmission structure is connected to the end of the drive shaft on the upper side of the feed cylinder. The power output end of the planetary gear transmission structure is connected to the corresponding transmission shaft for transmission. The circumferential surface of the guide tooth ring is provided with a plurality of guide tooth grooves, and the lower end of the vibration ring is uniformly and fixedly connected with a plurality of meshing tooth blocks that can mesh with the guide tooth grooves.

[0009] Preferably, an annular protective shell is fixedly connected to the upper end of the feeding cylinder, the annular protective shell is located outside the planetary gear transmission structure, and a top cover is threaded to the upper end of the annular protective shell.

[0010] Preferably, a protective disc is fixedly connected to the upper side of the feeding cylinder surface. The protective disc is located below the rectangular opening on the upper side, and the outer end of the protective disc is inclined downward and extends to the upper side of the first screening disc.

[0011] Preferably, at least three partitions are fixedly connected to the lower interior side of the housing, which divide the space at the lower end of the housing into independent placement spaces; each placement space has a through hole in the middle, which is connected to the discharge valve on the lower side; and the bottom of the housing at the lower end of the placement space has an inclined surface that slopes towards the through hole.

[0012] Preferably, the baffle assembly includes a mounting ring rotatably connected to the surface of the housing inside the discharge shell. A plurality of sealing plates are fixedly connected to the surface of the mounting ring. The surface of the housing inside the discharge shell has a number of feed openings equal to the number of sealing plates. When the mounting ring rotates, the feed openings are opened and closed by the cooperation between the sealing plates and the feed openings. A sealing gasket is fixedly connected to the inner end of the sealing plate. A transmission gear ring is fixedly connected to the surface of the mounting ring. A transmission gear meshes with the outer side of the transmission gear ring. The transmission gear is rotatably connected to the housing. A first bevel gear is fixedly connected to the lower side of the transmission gear on the same axis. A second bevel gear meshes with the outer side of the first bevel gear. A control motor is provided on the outer side of the housing. The power output end of the control motor is fixedly connected to the second bevel gear on the same axis.

[0013] Preferably, the housing surface between two adjacent feed openings is provided with a dispensing tip.

[0014] Preferably, the material guiding assembly includes a collecting hopper fixedly connected to the inner wall of the housing. The collecting hopper is located below the feed opening. The lower surface of the screening cylinder has multiple evenly distributed arc-shaped openings. The inner end of the collecting hopper is inclined downward and extends to the opening of the arc-shaped opening, so that the material can enter the interior of the screening cylinder through the arc-shaped opening under the guidance of the collecting hopper.

[0015] Compared with the prior art, the slag removal and screening device for producing alloy aluminum powder of the present invention has at least the following beneficial effects: 1. During sieving, the present invention can construct a gas circulation channel by cooperating with an exhaust one-way valve and an intake one-way valve, which can fill the shell with inert gas and exhaust the internal air, thereby establishing a continuous and stable oxygen-free protective atmosphere, preventing dust from clogging the screen holes due to electrostatic adsorption, and avoiding the risk of dust spontaneous combustion. 2. The first and second screening discs are vibrated and screened simultaneously by rotating the rotary vibrating assembly. This not only facilitates the effective screening of dust, but also effectively prevents powder adhesion and screen clogging. It eliminates the need for frequent shutdowns for cleaning, greatly improves screening efficiency and continuity, and reduces manual maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional schematic diagram of the internal structure of the housing of the present invention; Figure 3 This is a first schematic diagram of the baffle assembly installation structure of the present invention; Figure 4 This is a schematic diagram of the material feeding shell and the installation structure of the shell according to the present invention; Figure 5 This is a schematic diagram of the placement space structure of the present invention; Figure 6 This is a schematic diagram of the sieve cylinder installation structure of the present invention; Figure 7 This is a second schematic diagram of the baffle assembly mounting structure of the present invention; Figure 8 This is a cross-sectional schematic diagram of the internal structure of the multi-layer sieving tower of the present invention; Figure 9 This is a schematic diagram of the spiral blade mounting structure of the present invention; Figure 10 This is the invention Figure 9 A magnified view of part O; Figure 11 This is a first schematic diagram of the installation structure of the rotary vibration assembly of the present invention; Figure 12 This is a second schematic diagram of the mounting structure of the rotary vibration assembly of the present invention; Figure 13 This is a schematic diagram of the internal structure of the sieve cylinder of the present invention.

[0017] In the diagram: 1-Shell; 2-Discharge shell; 3-Support leg; 4-Sealing cover; 5-Feed hopper; 6-Feed valve; 7-Feed opening; 8-Distribution tip; 9-Sealing plate; 10-Transmission gear ring; 11-Meshing gear block; 12-Transmission gear; 13-Mounting ring; 14-First bevel gear; 15-Second bevel gear; 16-Control motor; 17-Screwing cylinder; 18-Feeding cylinder; 19-Drive shaft; 20-Helical blade; 21-Drive motor; 22-First screening disc; 23-First collecting disc; 24-Guide disc; 25-Second screening disc; 26-Annular baffle; 27-Second collecting disc; 28-Guide hopper; 29-Third discharge pipe; 30-Second discharge pipe; 31-First discharge pipe; 32-Arch-shaped opening; 33-Collection hopper; 34-Discharge valve; 35-Top cover; 36-Annular protective shell; 37-Central gear; 38-Transmission gear; 39-Rotating ring; 40-Internal gear ring; 41-Transmission shaft; 42-Connecting gear; 43-Vibration ring; 44-Reset spring; 45-Connecting rod; 46-Push plate; 47-Rectangular opening; 48-Baffle plate; 49-Discharge hole; 50-Outlet check valve; 51-Oxygen detector; 52-Inlet check valve; 53-Protective disc; 54-Guide gear ring; 55-Guide gear groove. Detailed Implementation

[0018] The following description, in conjunction with the accompanying drawings and specific embodiments, provides a more detailed description of a slag removal and screening device for producing alloy aluminum powder according to the present invention.

[0019] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] This embodiment discloses a slag removal and screening device for the production of aluminum alloy powder, such as... Figure 1-13As shown, the device includes a housing 1 and a multi-layer sieving tower fixedly connected to the inner side of the housing. The housing 1 serves as the supporting base and sealed cavity of the entire device, providing stable rigid support for the internal sieving components. It also forms a closed working space, effectively isolating external dust, moisture, impurities, and air, providing an oxygen-free, dry, and clean sieving environment for the aluminum alloy powder. This prevents the powder from oxidizing, becoming damp, or being mixed with impurities. Furthermore, it allows the powder to be sieved in a safe atmosphere provided by an inert gas, avoiding the risk of dust explosion and fundamentally ensuring the safety of the sieving process and the stability of the powder quality. Multiple support legs 3 are fixedly connected to the lower end of the housing 1 to support the normal operation of the invention.

[0021] The outer side of the housing 1 is fixedly connected to and connected to a discharge shell 2. The upper end of the discharge shell 2 is fixedly connected to and connected to a feed valve 6. The bottom of the housing 1 is fixedly connected to and connected to multiple discharge valves 34. The surface of the housing 1 is fixedly connected to and connected to an exhaust check valve 50 and an intake check valve 52. The intake check valve 52 is used to connect to an inert gas injection device. The discharge shell 2 serves as a buffer chamber for the powder to be screened, used for temporary storage of the feed material. The feed valve 6 is used to precisely control the powder feed rate and feeding rhythm, enabling quantitative and controllable feeding. The upper opening of the feed valve 6 is fixedly connected to a feed hopper 5 for convenient aluminum powder feeding. The discharge valves 34 are used to separately discharge powders of different mesh sizes after screening. The exhaust check valve 50 and the intake check valve 52 cooperate to construct a gas circulation channel. The shell can be filled with inert gas and the internal air can be discharged to establish a continuous and stable oxygen-free protective atmosphere. The inner wall of the shell 1 is fixedly connected to a material guiding component, which allows the material in the discharge shell 2 to enter the multi-layer screening tower. The material guiding component is used to orient and concentrate the falling powder, which can prevent the powder from dispersing, segregating, and scattering, and can make the powder enter the screening tower evenly and in a concentrated manner, ensuring uniform feed distribution and high screening consistency. The surface of the shell 1 is rotatably connected to a baffle assembly for controlling the connection state between the shell 1 and the discharge shell 2. The baffle assembly, as a feed on / off control mechanism, is used to quickly switch the opening and closing of the feed channel, which can flexibly start and stop the screening process, accurately control the timing of powder entry, avoid powder accumulation and blockage, and ensure that the screening process is continuous and controllable.

[0022] The lower part of the shell 1 has multiple placement spaces, and the discharge valves 34 are connected to the corresponding placement spaces. The placement spaces serve as grading and collection chambers for independently storing sieved powders of different mesh sizes, which can prevent coarse and fine powders from mixing, ensure sieving purity, and achieve precise grading and collection. The multi-layer sieving tower has multiple discharge ends, which are located on the upper side of the corresponding placement spaces, for discharging materials of different mesh sizes. The discharge ends are used to directionally transport the powders after each sieving stage to the corresponding collection spaces, which can achieve the separation and output of coarse and fine powders, ensure sieving accuracy, and improve product grading efficiency.

[0023] The multi-layer screening tower also includes a screening cylinder 17, and a vertically arranged feeding cylinder 18 is coaxially fixedly connected inside the screening cylinder 17. Rectangular openings 47 are respectively opened on the upper and lower sides of the surface of the feeding cylinder 18 for feeding and discharging. The screening cylinder 17 serves as the main support cylinder of the screening tower and is used to coaxially support the multi-layer screening discs and transmission components, which can ensure the coaxiality and stability of the overall structure and prevent shaking and swaying during operation. The feeding cylinder 18 serves as a vertical powder conveying channel and is used to lift the powder to be screened at the bottom to the upper screening section for internal feeding for subsequent screening.

[0024] The feed cylinder 18 is coaxially rotatably connected to a drive shaft 19. A spiral blade 20 is fixedly connected to the lower surface of the drive shaft 19, and the outer side of the spiral blade 20 is in contact with the inner wall of the feed cylinder 18. The drive shaft 19 serves as the main power transmission shaft, receiving power from the drive motor and rotating stably, which can drive the spiral blade to rotate synchronously. The spiral blade 20 serves as a vertical conveying actuator, continuously lifting the powder at the bottom through the spiral angle, achieving stable powder conveying, ensuring that the powder fully contacts the screen in the screening section, and improving the screening effect. The bottom of the screening cylinder 17 is fixedly connected to a drive motor 21, and the power output end of the drive motor 21 is coaxially fixedly connected to the bottom of the drive shaft 19. The drive motor 21 serves as a power source, providing stable and controllable rotational torque, which can provide continuous power for powder conveying and screen vibration, ensuring that the screening process is continuous, stable, and efficient.

[0025] The internal structure of the screening cylinder 17, from top to bottom, includes a first screening disc 22, a first collecting disc 23, a guide disc 24, a second screening disc 25, a second collecting disc 27, and a guide hopper 28. This multi-layer screening assembly forms a graded screening system from fine to coarse, used for step-by-step screening and refining of powder particles. It can achieve precise separation of coarse slag, medium powder, and fine powder, significantly improving screening accuracy and reducing slag content. The surfaces of the first screening disc 22 and the second screening disc 25 are both provided with screening holes. The mesh size of the first screening disc 22 is smaller than that of the second screening disc 25. During screening, a graded design with finer particles at the top and coarser particles at the bottom is adopted, serving to gradually screen qualified powder. The upper surface of the upper feed cylinder 18... The rectangular opening 47 is located on the upper side of the first sieving disc 22; the upper opening serves as a powder dispensing port, used to evenly distribute the lifted powder onto the surface of the first sieving disc, ensuring that the powder fully covers the screen and improving the uniformity of the initial sieving; the guide disc 24 and the guide hopper 28 are fixedly connected to the inner wall of the sieving cylinder 17; the guide disc 24 and the guide hopper 28 serve as directional guide components, used to receive the residual material from the previous stage and accurately guide it to the next stage screen, preventing powder from scattering and mixing, and ensuring continuous sieving; the first sieving disc 22 serves as a sieving component for sieving the finest powder, with a diameter larger than the second sieving disc 25, maximizing the sieving range when sieving the finest powder, further improving the sieving effect.

[0026] Two sets of rotary vibration components are installed on the surface of the feeding cylinder 18. The first sieve disc 22 and the second sieve disc 25 are respectively connected to the corresponding rotary vibration components. The rotary vibration components serve as vibration driving mechanisms to drive the sieve discs to vibrate at high frequency, which can effectively prevent powder adhesion and clogging of the screen, and can significantly improve the screening speed and reduce the probability of screen clogging and downtime. The first collection disc 23 and the second collection disc 27 are respectively fixedly connected to the feeding cylinder 18. The collection discs serve as qualified powder collection components to receive and temporarily store the fine powder passing through the screen, and can stably transport it to the discharge end to avoid fine powder scattering and loss. The outer ends of the first sieve disc 22 and the second sieve disc 25 are respectively directed towards The bottom is inclined; the screen plate is designed to allow large coarse particles to slide outward automatically under the action of vibration and centrifugal force, which can quickly separate coarse and fine powders and improve the discharge efficiency of coarse slag; the outer diameter of the guide plate 24 is larger than the diameter of the first screening plate, so that the guide plate 24 can receive the material flowing down from the first screening plate; the large diameter receiving design is used to fully catch the outward sliding coarse slag and prevent coarse slag from scattering, which can ensure that all coarse slag enters the next stage of screening and avoid slag leakage; the inner end of the guide plate 24 is located on the upper side of the second screening plate 25, and the inner end of the guide plate 24 has a downward inclined guiding design, which is used to accurately guide the coarse slag into the second screening plate for a second effective screening.

[0027] The lower sides of the first collection tray 23, the second collection tray 27, and the guide hopper 28 are respectively fixedly connected to and connected to the first discharge pipe 31, the second discharge pipe 30, and the third discharge pipe 29. The outlets of the first discharge pipe 31, the second discharge pipe 30, and the third discharge pipe 29 serve as discharge ends and are located on the upper side of the corresponding placement space. The graded discharge pipe serves as an independent output channel for directionally conveying the sieved powders of each grade to the corresponding placement space. This allows for the separate discharge of coarse slag, medium powder, and fine powder, which can completely avoid mixing and ensure product specification consistency.

[0028] The rotary vibration assembly includes a guide toothed ring 54 fixedly connected to the surface of the feed cylinder 18. A rotating ring 39 is rotatably connected to the surface of the guide toothed ring 54. A vibration ring 43 is vertically slidably connected to the surface of the rotating ring 39 along the axial direction. Multiple return springs 44 are fixedly connected to the upper end of the vibration ring 43. The upper ends of the return springs 44 are respectively fixedly connected to the rotating ring 39. The guide toothed ring 54 serves as a power transmission reference component, providing stable meshing support. The rotating ring 39 serves as a rotation drive component, driving the entire vibration assembly to rotate. The vibration ring 43 serves as a vibration actuator, driving the first and second sieve discs to vibrate up and down. The return springs 44 serve as elastic reset components, providing rebound power and ensuring vibration continuity, enabling the sieve discs to vibrate continuously at high frequency and effectively prevent clogging. The first and second sieve discs 22 and 25 are respectively fixedly connected to the corresponding vibration rings 43 by bolts. The bolts are detachable, allowing for quick replacement of sieve discs with different mesh sizes, adapting to different powder screening needs and offering strong versatility.

[0029] An internal gear ring 40 is fixedly connected to the inner side of the rotating ring 39. Multiple connecting gears 42 mesh with the inner side of the internal gear ring 40. A transmission shaft 41 is coaxially fixedly connected between the connecting gears 42 on the upper and lower sides. The transmission shaft 41 is rotatably connected to the rotating ring 39. This gear meshing transmission is used to synchronously drive the upper and lower vibration components, ensuring consistent vibration frequency, and enabling synchronous vibration of the two-stage sieve discs with uniform screening effect. A planetary gear transmission structure is connected to the end of the drive shaft 19 on the upper side of the feeding cylinder 18. The planetary gears are used to reduce speed and increase torque, stabilize the output speed, and prevent excessive vibration leading to powder splashing, ensuring stable vibration. The power output end of the planetary gear transmission structure is connected to the corresponding transmission shaft 41 for transmission. This power splitting transmission is used to evenly distribute the power of the drive shaft 19 to the vibration components, achieving integrated conveying and vibration drive, simplifying the transmission structure, and reducing the failure rate. The transmission structure includes a central gear 37 fixedly connected to the upper end of the drive shaft 19. A transmission gear 38 is fixedly connected to the upper end of the transmission shaft 41. The transmission gear 38 meshes with the inner central gear 37. The transmission gear 38 acts as a power output end, outputting power from the drive shaft 19 to the transmission shaft 41. Under the meshing transmission of the connecting gear 42 and the internal gear ring 40, it drives the rotating ring 39 to rotate. A connecting rod 45 is fixedly connected to the lower end of the rotating ring 39. The vibrating ring 43 is vertically slidably connected to the connecting rod 45. A pusher plate 46 is fixedly connected to the lower end of the connecting rod 45. The pusher plate 46 is located at the upper ends of the first collecting disc 23 and the second collecting disc 27. When the rotating ring 39 rotates, the pusher plate 46 can push the material inside the first collecting disc 23 and the second collecting disc 27, allowing the material to be discharged through the first discharge pipe 31 and the second discharge pipe 30, respectively. The circumferential surface of the guide toothed ring 54 is provided with multiple guide toothed grooves 55, and the lower end of the vibrating ring 43 is uniformly and fixedly connected with multiple meshing tooth blocks 11; the toothed grooves and tooth blocks mesh with each other to convert the rotational motion into vertical reciprocating vibration, which can efficiently drive the sieve disc to vibrate at high frequency and improve the sieving efficiency; during the sieving process, the rotating ring 39 drives the vibrating ring 43 to rotate and vibrate up and down while rotating, and the powder of appropriate diameter is sieved out during the vibration process. Large-diameter powder is sieved out while the vibrating ring 43 vibrates and rotates. 2. When the friction of the second screening disc 25 is insufficient to provide enough centripetal force, the heavy particles will undergo centrifugal motion and gradually slide to the outside, so that the large particles of powder that do not meet the screening requirements first slide down the surface of the first screening disc 22 onto the guide disc 24, and are guided by the guide disc 24 to the second screening disc 25. After being screened by the second screening disc 25, the final unqualified large particles of powder fall into the guide hopper 28 through the second screening disc 25. The combination of high-frequency vibration and centrifugal force is used to efficiently separate coarse and fine powders and quickly discharge coarse slag, which can greatly improve the screening speed and reduce the cost of manual cleaning.

[0030] An annular protective shell 36 is fixedly connected to the upper end of the feeding cylinder 18. The annular protective shell 36 is located on the outside of the planetary gear transmission structure. The annular protective shell 36 serves as a dustproof protective cover to prevent powder from entering the gear meshing area, thus preventing gear wear and jamming and extending the service life of the transmission components. A top cover 35 is threadedly connected to the upper end of the annular protective shell 36. The threaded top cover is used for sealing and protection, and is convenient for disassembly and maintenance, allowing for quick maintenance of the transmission structure and reducing maintenance difficulty.

[0031] A guide disk 53 is fixedly connected to the upper side of the surface of the feeding cylinder 18. The guide disk 53 is located below the rectangular opening 47 on the upper side, and the outer end of the guide disk 53 is inclined downward and extends to the upper side of the first sieving disk 22. The guide disk 53 serves as a protective component, which allows the lifted powder to be guided to the first sieving disk 22 through the guide disk 53, preventing the powder from falling directly onto the vibrating assembly and affecting the normal operation of the vibrating assembly.

[0032] At least three partitions 48 are fixedly connected to the lower interior of the housing 1, dividing the space at the lower end of the housing 1 into independent placement spaces. The partitions serve as separators to completely separate the collection chambers at each stage, preventing cross-contamination of coarse and fine powders and ensuring the purity of the sieving. Each placement space has a discharge hole 49 in the middle, which is connected to the discharge valve 34 on the lower side. The discharge hole 49 serves as a centralized discharge port, allowing the powder to be discharged in a directional and concentrated manner, reducing residue. The bottom of the housing 1 at the lower end of the placement space has an inclined surface that slopes towards the through hole. The inclined surface serves as a self-flowing guide surface, allowing the powder to flow completely to the discharge port, reducing residue waste and improving the cleanliness of the discharge.

[0033] The baffle assembly includes a mounting ring 13 rotatably connected to the surface of the housing 1 inside the discharge shell 2. Multiple sealing plates 9 are fixedly connected to the surface of the mounting ring 13. The surface of the housing 1 inside the discharge shell 2 has an equal number of feed openings 7 as the number of sealing plates 9. The mounting ring acts as a rotating base, driving the sealing plates to rotate and switch positions. The sealing plates act as seals, sealing the feed inlet and maintaining a sealed inert gas environment. When the mounting ring 13 rotates, the feed openings 7 open and close through the cooperation of the sealing plates 9 and the feed openings 7. The rotary opening and closing design allows for rapid and precise control of feed flow and adjustment of the screening load. A sealing gasket is fixedly connected to the inner end of each sealing plate 9. The sealing gasket enhances sealing, prevents gas leakage, and ensures a stable inert gas environment.

[0034] A transmission gear ring 10 is fixedly connected to the surface of the mounting ring 13. A transmission gear 12 meshes with the outer side of the transmission gear ring 10. The transmission gear 12 is rotatably connected to the housing 1. A first bevel gear 14 is fixedly connected to the lower side of the transmission gear 12 on the same axis. A second bevel gear 15 meshes with the outer side of the first bevel gear 14. A control motor 16 is provided on the outer side of the housing 1. The power output end of the control motor 16 is fixedly connected to the second bevel gear 15 on the same axis. Under the drive of the control motor 16 and the meshing and transmission of the first bevel gear 14 and the second bevel gear 15, the feeding control is realized, reducing the intensity of manual labor. The control motor 16 can be a servo motor. By controlling the rotation speed of the servo motor each time, the rotation of the mounting ring 13 is controlled, so that the engagement and disengagement of the closing plate 9 and the feeding opening 7 are achieved. The control motor 16 is fixedly connected to the corresponding support leg 3 for supporting the control motor 16.

[0035] The surface of the housing 1 between two adjacent feed openings 7 is provided with a material distribution tip 8; the material distribution tip serves as a flow guiding structure to evenly disperse the powder to each feed opening 7, preventing local accumulation and ensuring uniform feeding.

[0036] The material guiding assembly includes a collecting hopper 33 fixedly connected to the inner wall of the housing 1. The collecting hopper 33 is located below the feed opening 7. The collecting hopper serves as a centralized material guiding component, used to gather and disperse powder, prevent splashing, and centrally guide it into the screening tower. The lower surface of the screening cylinder 17 has multiple evenly distributed arc-shaped openings 32. The inner end of the collecting hopper 33 is inclined downward and extends to the opening of the arc-shaped opening 32, so that the material can enter the interior of the screening cylinder 17 through the arc-shaped opening 32 under the guidance of the collecting hopper 33. The arc-shaped opening serves as a circumferential feed inlet, used to ensure that the powder enters the conveying cylinder evenly, ensure the uniformity of conveying, and avoid local accumulation.

[0037] The upper end of the housing 1 has an opening, and a sealing cover 4 is threadedly connected to the opening. The opening is used to facilitate the inspection of the internal multi-layer screening tower. The sealing cover serves as a maintenance port seal, which is used to facilitate opening the cover for inspection, replacement of screens, and observation of internal working conditions, making maintenance convenient. Preferably, the housing 1 can be a split housing, with sealing gaskets at the joints to ensure a sealing effect. At the same time, it can facilitate the replacement and maintenance of the first screening disc 22 and the second screening disc 25. The split design is used for quick disassembly and assembly of screening components, adapts to different screening needs, and has strong versatility.

[0038] This device provides a stable space filled with inert gas for screening, allowing the multi-layer screening tower to perform screening within the inert gas environment, ensuring safety during the screening process. The inert gas provides an oxygen-free environment, completely isolating oxygen and preventing oxidation and spontaneous combustion of the aluminum alloy powder, significantly improving production safety. During operation, the feed valve 6 is opened, and the control baffle assembly closes the feed opening 7. The material enters the discharge shell 2 through the feed valve 6. Then, the feed valve 6 is closed, and the control baffle assembly opens the feed opening 7. The material then enters the lower part of the screening cylinder 17 through the feed opening 7, the guide assembly, and the arc-shaped opening 32. Then, the feed opening 7 is closed by the control baffle assembly, and the inlet check valve 52 is connected to the inert gas conveying equipment to allow inert gas to enter the screening cylinder 17. The inert gas is introduced to replace the internal air and establish an oxygen-free environment. Since the screening cylinder 17 and the shell 1 are in a sealed state at this time, there is only one gas outlet, the outlet check valve 50. At this time, the internal oxygen can be discharged through the outlet check valve 50 by the inert gas. The internal oxygen content is detected by the oxygen detector 51. When the internal oxygen content reaches the screening standard, the drive motor 21 can be turned on to drive the multi-layer screening tower to perform the screening operation. During sieving, the alloy powder enters the feed cylinder 18 through the rectangular opening 47 on the lower side. The drive shaft 19 rotates under the control of the drive motor 21, and the alloy aluminum powder is lifted upward by the spiral blades 20, and then discharged to the first screening disc 22 through the upper rectangular opening 47. When the drive shaft 19 rotates, it drives the rotary vibration assembly through the planetary gear transmission structure. The rotary vibration assembly drives the first screening disc 22 and the second screening disc 25 to rotate and vibrate at the same time. The alloy aluminum powder is first screened by the first screening disc 22. The process involves screening fine aluminum powder into the first collection tray 23, which is then discharged through the first discharge pipe 31. The remaining alloy aluminum powder is discharged into the guide tray 24, and then through the guide tray 24 to the second screening tray 25 for screening. The screened medium powder enters the second collection tray 27, and then is discharged through the second discharge pipe 30. The remaining coarse slag is discharged into the guide hopper 28, and then through the third discharge pipe 30. This process achieves precise screening of aluminum powder and ensures that screening is carried out in a stable and safe environment with a stable inert gas concentration, effectively improving screening quality and safety.

[0039] It should be noted that, in actual implementation, the structure depicted in the accompanying drawings is not a fixed or unchanging embodiment. The components of the embodiments of the invention described and shown in these drawings can typically be arranged and designed in various different configurations. Furthermore, the accompanying drawings and abstract drawings are merely illustrative and do not represent the specific structure or actual quantity in a concrete implementation.

[0040] Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense as would be understood by one of ordinary skill in the art to which this invention pertains. The use of terms such as "a" or "an" in this specification and claims does not necessarily indicate a limitation of quantity. Terms such as "comprising" or "including" mean that the element or component preceding the word encompasses the element or component listed following the word and its equivalents, without excluding other elements or components. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0041] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed in the present invention without exceeding the protection scope of the present invention.

Claims

1. A slag removal and screening device for the production of aluminum alloy powder, characterized in that, It includes a shell (1) and a multi-layer sieve tower fixedly connected to the inside of the shell (1); The outer side of the housing (1) is fixedly connected to and connected to a discharge shell (2). The upper end of the discharge shell (2) is fixedly connected to and connected to a feed valve (6). The bottom of the housing (1) is fixedly connected to and connected to multiple discharge valves (34). The surface of the housing (1) is fixedly connected to and connected to an outlet check valve (50) and an inlet check valve (52). The inlet check valve (52) is used to connect to an inert gas injection device. The inner wall of the housing (1) is fixedly connected to a material guiding assembly so that the material in the discharge shell (2) can enter the multi-layer screening tower. The surface of the housing (1) is rotatably connected to a baffle assembly for controlling the connection state between the housing (1) and the discharge shell (2). The lower part of the shell (1) is provided with multiple placement spaces, and the discharge valve (34) is connected to the corresponding placement space respectively; the multi-layer screening tower is provided with multiple discharge ends, which are located on the upper side of the corresponding placement space, for discharging materials of different mesh sizes.

2. The slag removal and screening device for alloy aluminum powder production according to claim 1, characterized in that: The multi-layer screening tower also includes a screening cylinder (17), and a vertically arranged feeding cylinder (18) is coaxially fixed inside the screening cylinder (17). Rectangular openings (47) are respectively opened on the upper and lower sides of the surface of the feeding cylinder (18) for feeding and discharging. The feed cylinder (18) is rotatably connected to a drive shaft (19) on the inside. A spiral blade (20) is fixedly connected to the lower surface of the drive shaft (19). The outer side of the spiral blade (20) is in contact with the inner wall of the feed cylinder (18). A drive motor (21) is fixedly connected to the bottom of the screening cylinder (17). The power output end of the drive motor (21) is fixedly connected to the bottom of the drive shaft (19) on the same axis.

3. The slag removal and screening device for alloy aluminum powder production according to claim 2, characterized in that: The internal structure of the screening cylinder (17) is provided with a first screening disc (22), a first collecting disc (23), a guide disc (24), a second screening disc (25), a second collecting disc (27), and a guide hopper (28) from top to bottom. The screening mesh number of the first screening disc (22) is smaller than that of the second screening disc (25). The rectangular opening (47) on the upper side of the surface of the upper feed cylinder (18) is located on the upper side of the first screening disc (22). The guide disc (24) and the guide hopper (28) are fixedly connected to the inner wall of the screening cylinder (17). Two sets of rotary vibration components are installed on the surface of the feeding cylinder (18). The first screening disc (22) and the second screening disc (25) are respectively connected to the corresponding rotary vibration components. The first collecting disc (23) and the second collecting disc (27) are respectively fixedly connected to the feeding cylinder (18). The outer ends of the first screening disc (22) and the second screening disc (25) are respectively inclined downward. The outer diameter of the guide disc (24) is larger than the diameter of the first screening disc (22), so that the guide disc (24) can receive the material flowing down from the first screening disc (22). The inner end of the guide disc (24) is located on the upper side of the second screening disc (25). The first collection tray (23), the second collection tray (27) and the guide hopper (28) are respectively fixedly connected to and connected to the first discharge pipe (31), the second discharge pipe (30) and the third discharge pipe (29). The outlets of the first discharge pipe (31), the second discharge pipe (30) and the third discharge pipe (29) serve as discharge ends and are located on the upper side of the corresponding placement space.

4. The slag removal and screening device for producing aluminum alloy powder according to claim 3, characterized in that: The vibrating assembly includes a guide toothed ring (54) fixedly connected to the surface of the feed cylinder (18), a rotating ring (39) rotatably connected to the surface of the guide toothed ring (54), a vibrating ring (43) vertically slidingly connected to the surface of the rotating ring (39) along the axial direction, and a plurality of return springs (44) fixedly connected to the upper end of the vibrating ring (43), the upper ends of the return springs (44) being fixedly connected to the rotating ring (39) respectively; the first screening disc (22) and the second screening disc (25) are respectively fixedly connected to the corresponding vibrating rings (43) by bolts; An internal gear ring (40) is fixedly connected to the inner side of the rotating ring (39). Multiple connecting gears (42) are meshed on the inner side of the internal gear ring (40). A transmission shaft (41) is fixedly connected to the connecting gears (42) on the upper and lower sides. The transmission shaft (41) is rotatably connected to the rotating ring (39). A planetary gear transmission structure is connected to the end of the drive shaft (19) on the upper side of the upper feed cylinder (18). The power output end of the planetary gear transmission structure is connected to the corresponding transmission shaft (41) for transmission. The circumferential surface of the guide toothed ring (54) is provided with a plurality of guide toothed grooves (55), and the lower end of the vibration ring (43) is uniformly fixedly connected with a plurality of meshing tooth blocks (11).

5. The slag removal and screening device for producing aluminum alloy powder according to claim 4, characterized in that: The upper end of the feeding cylinder (18) is fixedly connected to an annular protective shell (36), which is located on the outside of the planetary gear transmission structure. The upper end of the annular protective shell (36) is threadedly connected to a top cover (35).

6. The slag removal and screening device for producing aluminum alloy powder according to claim 4, characterized in that: A protective disc (53) is fixedly connected to the upper side of the surface of the feeding cylinder (18). The protective disc (53) is located below the rectangular opening (47) on the upper side, and the outer end of the protective disc (53) is inclined downward and extends to the upper side of the first screening disc (22).

7. The slag removal and screening device for alloy aluminum powder production according to claim 1, characterized in that: At least three partitions (48) are fixedly connected to the lower interior of the housing (1), and the space at the lower end of the housing (1) is divided into independent placement spaces by the partitions (48); through holes are opened in the middle of the placement spaces, and the through holes are respectively connected to the discharge valve (34) on the lower side; the bottom of the housing (1) at the lower end of the placement space is provided with an inclined surface that slopes towards the through holes.

8. The slag removal and screening device for producing aluminum alloy powder according to claim 1, characterized in that: The baffle assembly includes a mounting ring (13) rotatably connected to the surface of the housing (1) inside the discharge shell (2). Multiple sealing plates (9) are fixedly connected to the surface of the mounting ring (13). The surface of the housing (1) inside the discharge shell (2) has a number of feed openings (7) equal to the number of sealing plates (9). When the mounting ring (13) rotates, the feed openings (7) are opened and closed by the cooperation between the sealing plates (9) and the feed openings (7). A sealing gasket is fixedly connected to the inner end of the sealing plate (9). A transmission gear ring (10) is fixedly connected to the surface of the mounting ring (13). A transmission gear (12) meshes with the outer side of the transmission gear ring (10). The transmission gear (12) is rotatably connected to the housing (1). A first bevel gear (14) is fixedly connected to the lower side of the transmission gear (12) on the same axis. A second bevel gear (15) meshes with the outer side of the first bevel gear (14). A control motor (16) is provided on the outer side of the housing (1). The power output end of the control motor (16) is fixedly connected to the second bevel gear (15) on the same axis.

9. The slag removal and screening device for producing aluminum alloy powder according to claim 8, characterized in that: The surface of the housing (1) between two adjacent feed openings (7) is provided with a feed tip (8).

10. The slag removal and screening device for producing aluminum alloy powder according to claim 2, characterized in that: The material guiding assembly includes a collecting hopper (33) fixedly connected to the inner wall of the housing (1). The collecting hopper (33) is located below the feeding opening (7). The lower side of the surface of the screening cylinder (17) is provided with a plurality of evenly distributed arc-shaped openings (32). The inner end of the collecting hopper (33) is inclined downward and extends to the opening of the arc-shaped opening (32), so that the material can enter the interior of the screening cylinder (17) through the arc-shaped opening (32) under the guidance of the collecting hopper (33).

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