Metal powder mixing device

Abstract

The application relates to the technical field of metal powder mixing, and discloses a metal powder mixing device which comprises a rack and further comprises a mixing and dispersing cylinder arranged at the top of the rack and used for dispersively mixing metal powder, a feeding port is arranged at the top of the mixing and dispersing cylinder, a dispersing plate is concentrically arranged in the mixing and dispersing cylinder and is provided with two groups of dispersing holes and is arranged in opposition, the dispersing plate is provided with dispersing holes for uniformly dispersing the metal powder and forming two groups of dispersing channels, and a dispersing unit is arranged in the mixing and dispersing cylinder in a concentric mode.

Description

Technical Field

[0001] This application relates to the field of metal powder mixing technology, and more particularly to a metal powder mixing device. Background Technology

[0002] Commonly used metal powders include stainless steel, iron, copper, aluminum, titanium, and nickel, each with different performance characteristics such as corrosion resistance, high strength, and low density. These powders are mixed with binders, injection molded, debound, and sintered to form metal parts with complex shapes, which are widely used in automobiles, medical devices, and electronic products. Before injection molding, various metal powders usually need to be uniformly mixed together using a mixing device.

[0003] However, in the process of implementing the relevant technical solutions, at least the following technical problems were found: First, during the storage process, metal raw materials are prone to contact with air and thus agglomerate. During the mixing process, the raw materials that are not agglomerated are mixed with the agglomerated raw materials at the same time, which reduces the mixing effect of the raw materials. Second, during the mixing process, the stirring of metal powder can easily cause friction between the metal powders, which will lead to an increase in powder temperature. The increase in powder temperature will lead to the risk of oxidation, thus resulting in poor mixing effect. Therefore, we propose a metal powder mixing device. Summary of the Invention

[0004] This application provides a metal powder mixing device that solves the problems in the prior art where metal powders easily clump together when exposed to air during storage, resulting in poor mixing and oxidation of the metal powders due to friction during the mixing process. The device achieves the following: the metal powders are first evenly dispersed and cooled during the mixing process, and then fully mixed and cooled again during the mixing process.

[0005] This application provides a metal powder mixing apparatus, including a frame, and further comprising: A mixing and dispersing cylinder is located at the top of the frame and is used to disperse and mix metal powder. The top of the mixing and dispersing cylinder is provided with a feed inlet. The dispersion plates are concentrically rotated inside the mixing and dispersing cylinder, and there are two sets of dispersion plates arranged opposite to each other. The dispersion plates are provided with dispersion holes for uniformly dispersing metal powder and forming two sets of dispersion channels. The dispersion unit, concentrically arranged with the dispersion plate, is used to disperse the metal powder while simultaneously providing initial cooling to the metal powder. The distributed unit includes: The receiving blocks are respectively located at the bottom of the dispersing plate and are concentrically arranged with the dispersing plate. The receiving blocks are equipped with a preliminary cooling component for cooling the metal powder passing through. The de-agglomeration and dispersion component is located on the receiving block and is used to crush agglomerated metal powder and disperse it evenly. The declustering and dispersing component includes: The first filter plate, located on top of the receiving block, is used to allow agglomerated metal powder to pass through. The second filter plate is located at the bottom of the receiving block and is used to allow the crushed metal powder to pass through. A crushing channel is formed between the receiving block and the mixing and dispersing cylinder. The outer wall of the receiving block is provided with a crushing plate, and the distance between the crushing plate and the mixing and dispersing cylinder decreases from top to bottom, thereby achieving active shearing, crushing and agglomeration. Both the receiving block and the dispersing plate are driven by an intermittent drive component to reciprocate and swing synchronously, so that the dispersing plate and the receiving block reciprocate and swing synchronously to dynamically prevent bridging and assist in dispersion and crushing. The mixing and stirring drum is located below the mixing and dispersing drum. It is used to fully mix the metal powder while simultaneously cooling the metal powder inside.

[0006] Furthermore, the receiving block includes a first receiving plate, which is axially connected to the dispersing plate and extends to the inner wall of the mixing and dispersing cylinder at the other end. The first filter plate is disposed on the first receiving plate. The second receiving plate is located at the bottom of the receiving block. The second receiving plate is axially connected to the dispersing plate, and its other end extends to the inner wall of the mixing and dispersing cylinder. The second filter plate is located on the second receiving plate.

[0007] Furthermore, the preliminary cooling component includes: A cavity is formed inside the receiving block and is located between the first receiving plate and the second receiving plate. Cooling liquid flows inside the cavity. The first cooling and dispersion channel is equidistantly opened on the top of the first receiving plate, and the interior of the first cooling and dispersion channel is connected to the cavity. The second cooling and dispersion channel is equidistantly opened on the second receiving plate, and the interior of the second cooling and dispersion channel is connected to the cavity. The opening angle of the first cooling and dispersion channel is parallel to the second receiving plate, and the opening angle of the second cooling and dispersion channel is perpendicular to the second receiving plate. Both the openings of the first cooling and dispersion channel and the second cooling and dispersion channel are provided with sieve holes.

[0008] Furthermore, the crushing channel is composed of a first receiving plate, a second receiving plate, and a mixing and dispersing cylinder, the crushing plate is composed of the outer wall of a receiving block located between the first receiving plate and the second receiving plate, and the aperture of the second filter plate is smaller than that of the first filter plate.

[0009] Furthermore, the first receiving plate and the second receiving plate are connected by a guide block, and the guide block is naturally connected with the two sets of first receiving plates to form a first guide plate, and the guide block is naturally connected with the two sets of second receiving plates to form a second guide plate; The first receiving plate, the second receiving plate, and the dispersing plate are all driven by an intermittent driving component to reciprocate and swing at the same angle.

[0010] Furthermore, the intermittent drive component includes: The swing wheel is concentrically arranged with the dispersion plate. Both sides of the swing wheel are provided with drive grooves, and the two sets of drive grooves are on the same straight line. One side of the drive groove is connected to an avoidance groove. The drive rods are symmetrically arranged on both sides of the swing wheel, and a drive column is fixedly connected to the top of the drive rods. The drive column matches the drive groove and is used to drive the swing wheel to rotate by an angle and then make it continue to rotate through the clearance groove. The drive rods move in opposite directions through a synchronizing element.

[0011] Furthermore, the mixing drum includes: The stirring assembly rotates eccentrically inside the mixing drum to thoroughly stir the metal powder and make it homogeneous. The secondary cooling component is located between the stirring component and the mixing drum, and is used to cool the metal powder in the mixture.

[0012] Further, the stirring assembly includes: A rotating shaft is eccentrically positioned to the mixing drum, and multiple sets of mixing plates are evenly and fixedly connected to the circumference of the rotating shaft. A pickup plate is fixedly connected to one end of each mixing plate, and a surrounding plate is fixedly connected between two adjacent sets of mixing plates. A storage space is formed between the pickup plate, the mixing plate, the surrounding plate, and the mixing drum. The inner wall of the mixing drum is evenly distributed with multiple sets of guide plates on both sides.

[0013] Furthermore, a spatula is provided at the arc-shaped end of the stirring plate.

[0014] Furthermore, the re-cooling component includes: The cooling space is composed of a surrounding panel and a stirring plate. The top of the cooling space has a water inlet and the bottom has a water outlet. A pipe connects the water inlet and the water outlet. Heat dissipation fins are evenly distributed on the top of the pickup plate to assist the cooling space in cooling the metal powder.

[0015] The technical solution provided in this application has at least the following technical effects or advantages: This application incorporates a mixing and dispersing cylinder, which allows the metal powder to pass through a dispersing plate during initial mixing, dispersing it simultaneously from both ends. During the dispersion process, any agglomerated metal powder passes through the dispersing plate and falls onto the first receiving plate. As the cylinder rotates, it enters the first filter plate along the inclined direction of the first receiving plate. This causes the agglomerated metal powder to be compressed under the rotation of the crushing plate. Furthermore, some of the unagglomerated metal powder is cooled through the first and second cooling and dispersing channels. Therefore, this effectively solves the problem of existing metal powders easily agglomerating due to contact with air during storage.

[0016] This application employs a linkage between a stirring component and a secondary cooling component. When metal powder enters the mixing drum, the pick-up plate and the rotating stirring plate cause the metal powder to enter the storage space. The cooling space then conducts heat to the metal powder during the stirring process, effectively solving the problem of oxidation caused by friction during the stirring process of existing metal powders. This achieves the processing of simultaneously stirring and cooling the metal powder. Attached Figure Description

[0017] Figure 1 This is a partial cross-sectional structural diagram of the whole in Embodiment 1 of this application; Figure 2 This is a schematic diagram of the overall front structure in Embodiment 1 of this application; Figure 3 This is a schematic diagram of the flow of metal powder when the dispersion plate rotates counterclockwise in Embodiment 1 of this application; Figure 4 This is a schematic diagram of the flow of metal powder when the dispersion plate rotates clockwise in Embodiment 1 of this application; Figure 5 This is a partial cross-sectional structural diagram of the dispersion plate and the receiving block in Embodiment 1 of this application; Figure 6 This is a schematic diagram of the cross-sectional structure of the dispersion plate and the receiving block in Embodiment 1 of this application from another angle; Figure 7 This is an exploded structural diagram of the intermittent drive component in Embodiment 1 of this application; Figure 8 This is a schematic diagram of the swing wheel in Embodiment 1 of this application; Figure 9 for Figure 8 A schematic diagram of the structure in which the central oscillating wheel rotates clockwise; Figure 10 for Figure 9 A schematic diagram of the structure after the central oscillating wheel rotates 30 degrees; Figure 11 This is a schematic diagram of the clockwise rotation of the oscillating wheel in Embodiment 1 of this application; Figure 12This is a schematic diagram of the mixing tank in Embodiment 2 of this application; Figure 13 This is a schematic diagram of the structure after the rotating shaft rotates in Embodiment 2 of this application.

[0018] In the diagram: 100, frame; 10, mixing and dispersing cylinder; 101, dispersing plate; 102, dispersing hole; 1, dispersing unit; 11, receiving block; 111, first receiving plate; 112, second receiving plate; 12, preliminary cooling assembly; 121, cavity; 122, first cooling and dispersing channel; 123, second cooling and dispersing channel; 13, de-agglomeration and dispersing assembly; 131, first filter plate; 132, second filter plate; 133, crushing channel; 134, grinding plate; 20, mixing and stirring cylinder; 30, guide block; 301, the first... 302. First guide plate; 40. Second guide plate; 40. Intermittent drive assembly; 401. Swing wheel; 402. Drive groove; 403. Clearance groove; 404. Drive rod; 405. Drive column; 50. Synchronizer; 21. Stirring assembly; 211. Rotating shaft; 212. Stirring plate; 2121. Shovel plate; 213. Pick-up plate; 214. Enclosure plate; 215. Storage space; 216. Guide plate; 22. Secondary cooling assembly; 221. Cooling space; 222. Water inlet; 223. Water outlet; 224. Heat dissipation fins. Detailed Implementation

[0019] This application discloses a metal powder mixing device. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] To better understand the above technical solution, the following will provide a detailed explanation of the technical solution in conjunction with the accompanying drawings and specific implementation methods.

[0021] Example 1: Refer to Figures 1-13 A metal powder mixing device includes a frame 100 and a mixing and dispersing cylinder 10 disposed on the top of the frame 100 for dispersing and mixing metal powder. The top of the mixing and dispersing cylinder 10 has a feed inlet. A dispersing plate 101 is concentrically rotatably connected inside the mixing and dispersing cylinder 10. The dispersing plate 101 is provided in two sets and is arranged opposite to each other. A circular shaft is fixedly connected to the bottom of the oppositely arranged dispersing plate 101 (the top of the circular shaft is at the same angle as the dispersing plate 101, and the angle between the two sets of dispersing plates 101 is 90 degrees). The dispersing plate 101 is provided with dispersing holes 102 for uniformly dispersing metal powder and forming two sets of dispersing channels. A dispersion unit 1 is concentrically arranged on the dispersion plate 101 for dispersing metal powder and simultaneously cooling the metal powder. The dispersion unit 1 includes a receiving block 11 disposed at the bottom of the dispersion plate 101. The receiving block 11 is concentrically arranged with the dispersion plate 101. The receiving block 11 includes a first receiving plate 111, which is axially connected to the dispersion plate 101 and extends to the inner wall of the mixing and dispersion cylinder 10 at the other end. A second receiving plate 112 is disposed at the bottom of the receiving block 11, which is axially connected to the dispersion plate 101 and extends to the inner wall of the mixing and dispersion cylinder 10 at the other end. It should be noted that the side of the first receiving plate 111 and the second receiving plate 112 away from the circular shaft is tangent to the mixing and dispersing cylinder 10; The receiving block 11 is provided with a preliminary cooling component 12 for cooling the metal powder passing through it, and a de-agglomeration and dispersion component 13 for crushing the agglomerated metal powder and dispersing it evenly.

[0022] Reference Figures 1-2 and Figures 5-6 The preliminary cooling component 12 includes a cavity 121 formed inside the receiving block 11, and the cavity 121 is located between the first receiving plate 111 and the second receiving plate 112. Cooling liquid flows inside the cavity 121. The cooling liquid is preferably a coolant, but water, heat transfer oil, or other liquids with high fluidity and rapid cooling can also be selected. The top of the first receiving plate 111 is provided with first cooling dispersion channels 122 at equal intervals, and the interior of the first cooling dispersion channels 122 is connected to the cavity 121. The second receiving plate 112 is provided with second cooling dispersion channels 123 at equal intervals, and the interior of the second cooling dispersion channels 123 is connected to the cavity 121. The opening angle of the first cooling dispersion channel 122 is parallel to the second receiving plate 112, and the opening angle of the second cooling dispersion channel 123 is perpendicular to the second receiving plate 112. Screen holes are provided at the openings of both the first cooling dispersion channel 122 and the second cooling dispersion channel 123. The de-agglomeration and dispersion component 13 includes a first filter plate 131 disposed on a first receiving plate 111 for passing agglomerated metal powder through, and a second filter plate 132 disposed on a second receiving plate 112 for passing pulverized metal powder through, wherein the aperture of the second filter plate 132 is smaller than the aperture of the first filter plate 131; a pulverization channel 133 is formed between the first receiving plate 111 and the second receiving plate 112 and the mixing and dispersion cylinder 10, and a crushing plate 134 is provided on the outer wall of the receiving block 11 located between the first receiving plate 111 and the second receiving plate 112, wherein the distance between the crushing plate 134 and the mixing and dispersion cylinder 10 decreases sequentially from the first receiving plate 111 to the second receiving plate 112; The aperture of the dispersion hole 102 = the aperture of the first filter plate 131 > the aperture of the second filter plate 132 = the aperture of the sieve holes of the first / second cooling dispersion channel. The first receiving plate 111 and the second receiving plate 112 are connected by a guide block 30, and the guide block 30 is naturally connected to the two sets of first receiving plates 111 to form a first guide plate 301, and the guide block 30 is naturally connected to the two sets of second receiving plates 112 to form a second guide plate 302. The first receiving plate 111, the second receiving plate 112, and the dispersing plate 101 are all driven to reciprocate in a synchronized manner by an intermittent driving assembly 40. The intermittent driving assembly 40 includes a swing wheel 401 concentrically arranged with the dispersing plate 101. Both sides of the swing wheel 401 are provided with driving grooves 402, and the two sets of driving grooves 402 are on the same straight line. One side of the driving groove 402 is connected to a clearance groove 403. The two sides of the swing wheel 401 are rotatably connected to driving rods 404. The driving column 405 matches the driving groove 402 and is used to drive the swing wheel 401 to rotate an angle and then continue to rotate through the clearance groove 403. The driving rod 404 moves in the opposite direction through a synchronizing member 50. The synchronizing component 50 includes two sets of drive gears, and any one set of drive gears is rotatably connected by a drive motor. A mounting shell is fixedly connected to the outside of the frame 100. The drive gears, swing wheel 401 and drive rod 404 are all installed between the mounting shell and the frame 100, which can ensure the sealing effect and prevent the problem of poor sealing effect affecting the mixing of metal powder. During the mixing process, metal powder is first fed into the mixing and dispersing cylinder 10 through the feed inlet. At this time, the drive motor is started and rotated in the opposite direction to the drive gear driven by the drive motor, which can make the two sets of drive rods 404 rotate in opposite directions. refer to Figure 4 and Figure 11 When the dispersion plate 101 rotates clockwise: The drive gear on the left rotates counterclockwise, and the counterclockwise rotating drive rod 404 gradually approaches the swing wheel 401, enabling the drive column 405 to enter the drive groove 402. As the drive rod 404 continues to rotate, the swing wheel 401 rotates. The preferred rotation angle in this application is 30 degrees, but it is not limited. The angle can be set according to the actual metal powder to be dispersed and the feeding conditions. When the swing wheel 401 rotates to 30 degrees, the drive column 405 will rotate and enter the clearance groove 403 (the drive groove 402 is a through groove, the clearance groove 403 is a blind path, and the height of the clearance groove 403 is lower than that of the drive groove 402), so that the drive column 405 can no longer drive the swing wheel 401 to continue rotating. Moreover, both the round shaft and the swing wheel 401 are damped shafts, which can keep them stable after the rotation angle. refer to Figure 3 and Figure 9 When the dispersion plate 101 rotates clockwise: The drive gear on the right rotates clockwise. When the drive rod 404 on the left enters the drive groove 402, the clockwise rotating drive rod 404 also gradually moves towards the swing wheel 401. After the swing wheel 401 is rotated 30 degrees, the drive column 405 is just about to enter the clearance groove 403. Thus, it first enters the clearance groove 403 and then enters the drive groove 402, causing the swing plate to rotate counterclockwise and deflect. This allows the metal powder on the dispersion plate 101 to fall along the inclined direction of the dispersion plate 101. Dispersion, cooling, and mixing of metal powders: Two sets of drive plates alternately rotate the oscillating plate, allowing the metal powder on the dispersing plate 101 to fall more effectively along its inclined angle. After the rotation angle, the first receiving plate 111 on the concentric side will rotate by the same angle, enabling the metal powder that has entered between the dispersing plate 101 and the first receiving plate 111 to move along the inclined direction of the first receiving plate 111 (simultaneously, the first guide plate 301 also guides the metal powder during the rotation angle, allowing it to enter the first cooling and dispersing channel 122 and the first filter plate 131). During the movement, unagglomerated powder will pass through the first cooling and dispersing channel 122 and the first filter plate 131. The dispersion channel 122 enters the interior of the receiving block 11, while the agglomerated metal powder passes through the first filter plate 131 and enters the crushing channel 133. Since the crushing plate 134 rotates in the opposite direction during the recovery process of the dispersion plate 101, it can squeeze and disperse the agglomerated metal powder in the crushing channel 133 and disperse it through the second filter plate 132. During the recovery and deflection of the dispersion plate 101 in the opposite direction, the metal powder will move towards the first cooling dispersion channel 122. The metal powder in the receiving block 11 will then pass through the second cooling dispersion channel 123 and eventually move away from the second cooling dispersion channel 123. The opposite motion described above occurs when the dispersion plate 101 rotates in the opposite direction. It should be noted that when one set of dispersion plates 101 rotates, the other set of dispersion plates 101 acts as a guide. Moreover, during the left and right swinging of the dispersion plates 101, the metal powder will have two sets of mixing channels. The opening direction of the first cooling dispersion channel 122 is parallel to the second receiving plate 112, and the opening direction of the second cooling dispersion channel 123 is perpendicular to the second receiving plate 112. In this way, the metal powder entering from the two can be cross-mixed together when discharged, which also achieves the effect of preliminary mixing. The advantage of setting up the first cooling and dispersion channel 122 and the second cooling and dispersion channel 123 is that they help the metal powder to disperse and fall in the direction of the swing as the angle of the swing changes within the receiving block 11.

[0023] Example 2: Refer to Figures 1-2 and Figures 12-13 The mixing and dispersing cylinder 10 is connected to a mixing and stirring cylinder 20 below. The mixing and stirring cylinder 20 is used to fully mix the metal powder and cool the metal powder inside again. The bottom of the mixing and stirring cylinder 20 is provided with a discharge port. The mixing and stirring cylinder 20 includes a stirring component 21 that rotates eccentrically inside the mixing and stirring cylinder 20 to fully stir the metal powder and make it uniform. A cooling and re-cooling component 22 is provided between the stirring component 21 and the mixing and stirring cylinder 20 to cool the metal powder in the mixture. The stirring assembly 21 includes a rotating shaft 211 eccentrically disposed with respect to the mixing drum 20. There is a gap between the axis of the rotating shaft 211 and the axis of the mixing drum 20, causing the rotation of the stirring plate 212 within the mixing drum 20 to be eccentric. Furthermore, the axis of the rotating shaft 211 is located below the axis of the mixing drum 20, ensuring that the stirring plate 212 is tangent to the bottom of the mixing drum 20 when it rotates to the bottom, thereby enabling the cleaning of the inner wall of the mixing drum 20. Multiple sets of stirring plates 212 are evenly and fixedly connected along the circumference of the rotating shaft 211. A pickup plate 213 is fixedly connected to one end of each stirring plate 212. A surrounding plate 214 is fixedly connected between two adjacent sets of stirring plates 212, and a storage space 215 is formed between the pickup plate 213, the stirring plate 212, the surrounding plate 214, and the mixing drum 20. Multiple sets of guide plates 216 are evenly distributed on opposite sides of the inner wall of the mixing drum 20. A shovel plate 2121 is provided at the arc-shaped end of each stirring plate 212. The re-cooling component 22 includes a cooling space 221 formed by the enclosure plate 214 and the stirring plate 212. The cooling space 221 has an inlet 222 at the top and an outlet 223 at the bottom. A pipe connects the inlet 222 and the outlet 223. Both the pipe and the cooling space 221 are filled with coolant. A flow valve is installed on the pipe to ensure that the flow rate of the inlet 222 and the outlet 223 remains consistent each time. The stirring plate 212 is made of metal and can conduct heat, thereby transferring it to the heat dissipation fins 224 on the pickup plate 213. The top of the pickup plate 213 is fixedly connected to heat dissipation fins 224 to assist the cooling space 221 in cooling the metal powder. During mixing, metal powder enters the mixing drum 20 from top to bottom. The mixing component 21 inside the drum is rotating at a low speed. The pickup plate 213, mixing plate 212, and surrounding plate 214 form an independent storage space 215 with the inner wall of the drum. When the rotating shaft 211 rotates, the storage space 215 completes the action of pickup-lifting-sprinkling along the trajectory. After the shovel plate 2121 picks up the powder in the drum, it is lifted to a certain height by the mixing component 21. The powder is sprinkled from the storage space 215 under the action of gravity and fully collides and mixes with other powders in the drum. Multiple sets of storage spaces 215 operate simultaneously to achieve segmented uniform mixing of powder. Furthermore, the multiple sets of guide plates 216 on opposite sides of the inner wall of the mixing drum 20 form a blocking-diversion-guiding effect on the powder moving in a circular motion with the mixing component 21, breaking the inertia of the powder's circular flow, causing the powder to disperse and collide in multiple directions, further eliminating powder agglomeration and improving the overall uniformity of mixing. Meanwhile, the eccentric rotation trajectory enables the stirring plate 212 and the shovel plate 2121 to cover the entire inner wall and bottom area of ​​the mixing drum 20. Combined with the full-area distribution of the guide plate 216, it achieves no dead angle mixing of metal powder in the drum, ensuring that all powders can participate in the mixing and eliminating the phenomenon of local uneven mixing. The cooling space 221 formed by the enclosure 214 and the stirring plate 212 is a closed cavity 121. The inlet 222 continuously injects low-temperature coolant, and the outlet 223 simultaneously discharges the coolant after heat absorption. The flow valve on the pipeline precisely controls the inlet and outlet flow rates to ensure that the cooling space 221 and the coolant in the pipeline are always in a dynamic closed-loop circulation state. The low-temperature coolant achieves efficient heat conduction through the metal stirring plate 212, quickly absorbing the heat of the metal powder that the stirring plate 212 contacts. The stirring plate 212 is made of a highly thermally conductive metal, which is in full contact with the metal powder. It can not only transfer the cooling capacity of the coolant in the cooling space 221 to the powder, but also quickly absorb the heat generated during the powder stirring process and transfer it back to the coolant in the cooling space 221. This achieves rapid conduction of cooling and heat throughout the entire area. The heat dissipation fins 224 fixed on the top of the pickup plate 213 rotate synchronously with the stirring assembly 21. On the one hand, the heat dissipation fins 224 directly contact the metal powder in the cylinder, increasing the contact area between the cooling capacity and the powder, and quickly absorbing the heat from the powder. On the other hand, when the fins rotate with the stirring assembly 21, they form a relative flow with the air in the cylinder, dissipating the absorbed heat through convection heat transfer. At the same time, it helps to diffuse the cooling capacity conducted from the cooling space 221 to the pickup plate 213 to all parts of the cylinder, complementing the liquid cooling heat conduction and improving the overall cooling efficiency. The mixing and cooling work together to ensure that the powder is in full contact with the low-temperature mixing plate 212, pickup plate 213, and heat dissipation fins 224 throughout the mixing, moving, and scattering process. This achieves dynamic operation of mixing and cooling simultaneously, ensuring that the metal powder inside the cylinder remains at a low temperature throughout the process.

[0024] Once the metal powder is fully mixed and the temperature drops to the required level, the stirring assembly 21 maintains a low-speed eccentric rotation, and the discharge port at the bottom of the mixing drum 20 is opened (the discharge port is closed during mixing). The low-speed rotating stirring plate 212 drives the mixed low-temperature powder towards the discharge port, while the scraper plate 2121 scrapes the bottom of the drum, pushing all the powder remaining at the bottom of the drum to the discharge port, ensuring that the powder is discharged smoothly and without residue. During the discharge process, the secondary cooling assembly continues to work until all the powder in the drum is discharged, then the water inlet 222 and water outlet 223 are closed, completing the single mixing and cooling operation.

[0025] How this application works: Metal powder enters the mixing and dispersing cylinder 10 from the top feed port and falls onto the swingable dispersing plate 101. The swing wheel 401, drive rod 404, drive gear, etc. are driven by a motor, so that the two sets of opposing dispersing plates 101 swing synchronously in an alternating, reciprocating 30-degree angle adjustable manner. When one set of dispersion plates 101 is tilted, the powder on it slides down its surface and is initially dispersed into a powder flow through the dispersion holes 102 on it. At the same time, another set of dispersion plates 101 remains horizontal or tilted in the opposite direction, which plays the role of guiding and receiving powder, forming a dynamic and interwoven dispersion channel. The falling powder enters the channel formed by the first receiving plate 111, the second receiving plate 112, the dispersing plate 101, and the cylinder wall. When the dispersing plate 101 swings, the first receiving plate 111 tilts at the same angle to guide the powder movement. Unclumped fine powder can pass through the first filter plate 131 into the crushing channel 133, or enter the internal cavity 121 of the receiving block 11 through the first cooling and dispersing channel 122. The clumped powder, due to the tilt angle, eventually passes through the first filter plate 131 and enters the crushing channel 133 between the first receiving plate 111 and the second receiving plate 112. The clumped powder entering the crushing channel 133 will pass through the gap that narrows from the crushing plate 134 to the cylinder wall as the receiving plate swings. When the dispersing plate 101 swings back or reverses, the crushing plate 134 will move in the opposite direction, generating compression and shearing forces on the agglomerated powder to break it up. The crushed powder needs to pass through the second filter plate 132 with smaller pore size to ensure that only powder that meets the particle size requirements can enter the next stage, further ensuring the uniformity of dispersion. The receiving block 11 is filled with flowing coolant. When the powder enters the cavity 121 through the first cooling and dispersion channel 122, it indirectly contacts the coolant and undergoes the first heat exchange to achieve preliminary cooling. The powder moves with the oscillation of the dispersion plate 101 in the cavity 121 and is finally discharged from the second cooling and dispersion channel 123. The first cooling and dispersion channel 122 is parallel to the second receiving plate 112, and the second cooling and dispersion channel 123 is perpendicular to the second receiving plate 112. This cross-opening design allows the two batches of powder to be cross-mixed again when discharged.

[0026] II. Mixing drum 20: Deep mixing, further cooling and discharge The rotating shaft 211 rotates, with its axis located below the axis of the mixing drum 20. Multiple sets of stirring plates 212 are evenly distributed on the shaft. The stirring plates 212, the picking plates 213, the surrounding plates 214 and the drum wall form multiple independent storage spaces 215. When rotating eccentrically, these spaces make non-concentric circular motions inside the drum, sequentially completing the cycle of the shovel plate 2121 picking up powder -> space lifting -> powder falling, breaking the overall flow of powder and achieving intense convective mixing. The guide plate 216 on the inner side of the cylinder wall can block and divert the powder moving in a circular motion, further increasing the chance of collision between powder particles, eliminating dead corners, and ensuring uniform mixing throughout the entire area.

[0027] The eccentric design allows the shovel plate 2121 to scrape the bottom of the cylinder when it rotates to the lowest point, preventing powder from accumulating.

[0028] Dynamic cyclic cooling: While mixing, the cooling component 22 operates again. The enclosed cooling space 221 formed by the enclosure plate 214 and the stirring plate 212, as well as the external pipes connected to it, are filled with circulating coolant. Flow valves ensure consistent inflow and outflow, maintaining dynamic balance.

[0029] The metal stirring plate 212 serves as a highly efficient heat conductor, absorbing heat from the powder on one side and transferring heat to the coolant in the cooling space 221 on the other.

[0030] The heat dissipation fins 224 on the top of the pick-up plate 213 directly contact the powder, increasing the cooling contact area and enhancing the heat dissipation effect through air convection generated by rotation. This forms a dual complementary cooling mechanism of "liquid-cooled stirring plate 212 interior + air-cooled heat dissipation fins 224", ensuring that the powder is effectively cooled throughout the mixing process.

[0031] Output: After the mixing and cooling meet the requirements, the bottom discharge port is opened. The low-speed rotating stirring plate 212, especially the shovel plate 2121, continuously pushes and scrapes the powder toward the discharge port, achieving complete and residue-free discharge. During the discharge process, the cooling system continues to run until the operation is completed.

[0032] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0033] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A metal powder mixing device, comprising a frame (100), characterized in that, Also includes: A mixing and dispersing cylinder (10) is located on the top of the frame (100) and is used to disperse and mix metal powder. The top of the mixing and dispersing cylinder (10) is provided with a feed inlet. The dispersing plate (101) is concentrically rotated inside the mixing and dispersing cylinder (10), and the dispersing plate (101) is provided in two sets and arranged opposite to each other. The dispersing plate (101) is provided with dispersing holes (102) for uniformly dispersing metal powder and forming two sets of dispersing channels. The dispersion unit (1) is concentrically arranged with the dispersion plate (101) and is used to disperse the metal powder while simultaneously cooling the metal powder. The distributed unit (1) includes: The receiving blocks (11) are respectively located at the bottom of the dispersing plate (101) and are concentrically arranged with the dispersing plate (101). The receiving blocks (11) are provided with a preliminary cooling component (12) for cooling the metal powder that passes through. The de-agglomeration and dispersion component (13) is disposed on the receiving block (11) and is used to crush the agglomerated metal powder and then disperse it evenly. The de-clustering and dispersing component (13) includes: The first filter plate (131) is located on top of the receiving block (11) and is used to allow agglomerated metal powder to pass through. The second filter plate (132) is located at the bottom of the receiving block (11) to allow the crushed metal powder to pass through. A crushing channel (133) is formed between the receiving block (11) and the mixing and dispersing cylinder (10). A crushing plate (134) is provided on the outer wall of the receiving block (11), and the distance between the crushing plate (134) and the mixing and dispersing cylinder (10) decreases from top to bottom, thereby achieving active shearing, crushing and agglomeration. The receiving block (11) and the dispersing plate (101) are both driven by the intermittent driving component (40) to reciprocate and swing at the same angle, so that the dispersing plate (101) and the receiving block (11) reciprocate and swing synchronously to dynamically prevent bridging and assist in dispersion and crushing. The mixing and stirring drum (20) is located below the mixing and dispersing drum (10) and is used to fully mix the metal powder while cooling the metal powder inside again.

2. The metal powder mixing device as described in claim 1, characterized in that, The receiving block (11) includes a first receiving plate (111), which is axially connected to the dispersing plate (101) and extends to the inner wall of the mixing and dispersing cylinder (10) at the other end. The first filter plate (131) is disposed on the first receiving plate (111). The second receiving plate (112) is located at the bottom of the receiving block (11). The second receiving plate (112) is axially connected to the dispersing plate (101), and the other end extends to the inner wall of the mixing and dispersing cylinder (10). The second filter plate (132) is located on the second receiving plate (112).

3. The metal powder mixing device as described in claim 2, characterized in that, The preliminary cooling component (12) includes: A cavity (121) is formed inside the receiving block (11) and is located between the first receiving plate (111) and the second receiving plate (112). Cooling liquid flows inside the cavity (121). The first cooling and dispersion channel (122) is equidistantly opened on the top of the first receiving plate (111), and the interior of the first cooling and dispersion channel (122) is connected to the cavity (121). The second cooling and dispersion channel (123) is equidistantly opened on the second receiving plate (112), and the interior of the second cooling and dispersion channel (123) is connected to the cavity (121). The opening angle of the first cooling and dispersion channel (122) is parallel to the second receiving plate (112), and the opening angle of the second cooling and dispersion channel (123) is perpendicular to the second receiving plate (112). The openings of the first cooling and dispersion channel (122) and the second cooling and dispersion channel (123) are both provided with sieve holes.

4. The metal powder mixing device as described in claim 1, characterized in that, The crushing channel (133) is composed of a first receiving plate (111), a second receiving plate (112), and a mixing and dispersing cylinder (10). The crushing plate (134) is composed of the outer wall of a receiving block (11) located between the first receiving plate (111) and the second receiving plate (112). The aperture of the second filter plate (132) is smaller than that of the first filter plate (131).

5. A metal powder mixing device as described in claim 4, characterized in that, The first receiving plate (111) and the second receiving plate (112) are connected by a guide block (30), and the guide block (30) is naturally connected with the two sets of first receiving plates (111) to form a first guide plate (301), and the guide block (30) is naturally connected with the two sets of second receiving plates (112) to form a second guide plate (302).

6. The metal powder mixing device as described in claim 1, characterized in that, The intermittent drive component (40) includes: A swing wheel (401) is concentrically arranged with the dispersion plate (101). Both sides of the swing wheel (401) are provided with drive grooves (402), and the two sets of drive grooves (402) are on the same straight line. One side of the drive groove (402) is connected to an avoidance groove (403). The drive rod (404) is symmetrically rotated on both sides of the swing wheel (401), and the top of the drive rod (404) is fixedly connected to the drive column (405). The drive column (405) matches the drive groove (402) and is used to drive the swing wheel (401) to rotate by an angle and then make it continue to rotate through the clearance groove (403). The drive rod (404) moves in the opposite direction through the synchronizing member (50).

7. A metal powder mixing device as described in claim 1, characterized in that, The mixing drum (20) includes: The stirring assembly (21) rotates eccentrically inside the mixing drum (20) to thoroughly stir the metal powder and make it evenly mixed. The secondary cooling component (22) is located between the stirring component (21) and the mixing drum (20) and is used to cool the metal powder in the mixture.

8. A metal powder mixing device as described in claim 7, characterized in that, The stirring assembly (21) includes: A rotating shaft (211) is eccentrically positioned with respect to the mixing drum (20), and multiple sets of mixing plates (212) are evenly and fixedly connected in the circumferential direction of the rotating shaft (211). A pickup plate (213) is fixedly connected to one end of each mixing plate (212), and a surrounding plate (214) is fixedly connected between two adjacent sets of mixing plates (212). A storage space (215) is formed between the pickup plate (213), the mixing plate (212), the surrounding plate (214), and the mixing drum (20). The inner wall of the mixing drum (20) is evenly distributed with multiple sets of guide plates (216) on both sides.

9. A metal powder mixing device as described in claim 8, characterized in that, The arc-shaped end of the stirring plate (212) is provided with a spade plate (2121).

10. A metal powder mixing device as described in claim 7, characterized in that, The recooling component (22) includes: The cooling space (221) is composed of a surrounding plate (214) and a stirring plate (212). The cooling space (221) has an inlet (222) at the top and an outlet (223) at the bottom. A pipe connects the inlet (222) and the outlet (223). Heat dissipation fins (224) are evenly distributed on the top of the pickup plate (213) to assist the cooling space (221) in cooling the metal powder.

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