Intelligent high-density metal powder mixing machine

Abstract

This invention discloses an intelligent high-density metal powder mixer, relating to the field of metal powder processing and mixing technology. It includes a steel frame platform with a dust-free feeding mechanism on one side of its bottom and a vacuum feeding mechanism on its top. In this intelligent high-density metal powder mixer, when the mixing drum rotates under the drive assembly, a pushing block rotates synchronously with the mixing drum, driving the drive gear disc to rotate, which in turn drives the movable rod and stirring rod to rotate around their own axes. Because the rotation direction of the mixing drum is opposite to or has a relative speed difference with the stirring rod, the metal powder inside the mixing drum is simultaneously subjected to the tumbling action of the drum wall and the multi-point shearing and scattering action of the stirring rod. This achieves a composite motion of the mixing drum's revolution and the stirring rod's rotation, thereby solving the problem of stratification and segregation of high-density metal powders due to large differences in specific gravity, and improving the mixing uniformity of different component metal powders.

Description

Technical Field

[0001] This invention relates to the field of metal powder processing and mixing technology, and specifically to an intelligent high-density metal powder mixer. Background Technology

[0002] In the field of metal powder processing and mixing technology, with the increasingly stringent requirements of industrial manufacturing for material precision and performance, the mixing quality of high-density metal powders has become a key factor affecting the quality of the final product. Traditional metal powder mixing equipment, such as simple mechanical agitators or drum mixers, can achieve powder mixing to a certain extent, but when dealing with high-density metal powders with large specific gravity differences, their mixing effect is often unsatisfactory. These devices mainly rely on a single rotation or stirring action, which is difficult to effectively overcome the centrifugal force stratification phenomenon caused by the different specific gravities of metal powders, resulting in significant compositional inhomogeneity in the mixed powder at the microscopic level.

[0003] Existing mixing equipment generally suffers from a drawback when dealing with high-density metal powder mixing: due to limitations in the mixing mechanism, it is impossible to achieve a relative motion difference between the mixing cylinder and the stirring element. This makes it difficult to generate sufficient multidimensional shearing and scattering forces to break up the aggregation state between powder particles and promote the uniform dispersion of powders with different specific gravities. This defect directly leads to the easy occurrence of stratification and segregation of high-density metal powder during the mixing process, resulting in a significant reduction in mixing uniformity. This makes it difficult to meet the stringent requirements for raw material mixing precision in the production of high-end metal products. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent high-density metal powder mixer to solve the problem in the prior art that high-density metal powders are prone to stratification and segregation during the mixing process due to large differences in specific gravity, resulting in insufficient mixing uniformity.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intelligent high-density metal powder mixer, comprising a steel frame platform, a dust-free feeding mechanism provided on one side of the bottom of the steel frame platform, a vacuum feeding mechanism installed on the top of the steel frame platform, a conveying pipe installed on the top of the dust-free feeding mechanism, with the top end of the conveying pipe installed on one side of the vacuum feeding mechanism, an automatic batching mechanism installed on the inner wall of the steel frame platform below the vacuum feeding mechanism, with the output end of the vacuum feeding mechanism installed at the bottom end of the automatic batching mechanism, and a mixing mechanism installed on the inner wall of the steel frame platform below the automatic batching mechanism;

[0006] A protective frame is installed on the surface of the mixing mechanism, and a drive assembly is installed on the inner wall of the protective frame. A mixing cylinder is rotatably connected to the inner wall of the mixing mechanism. A push block arranged in a ring is installed on the inner wall of the mixing cylinder. Movable rods are rotatably connected to both sides of the inner top wall of the mixing mechanism. A drive gear is installed on the surface of the movable rod, and the drive gear is meshed with the push block. Multiple sets of stirring rods are installed on the surface of the movable rod.

[0007] Furthermore, a drive mechanism is installed on the inner wall of the protective frame, a drive rod is installed at the output end of the drive mechanism, a drive disc is installed at the bottom end of the drive rod, and a transmission belt is rotatably connected to the surface of the drive disc.

[0008] Furthermore, a conical discharge pipe is installed at the bottom of the mixing cylinder, and a transmission disc is installed on the surface of the conical discharge pipe. A transmission belt is rotatably connected to the surface of the transmission disc. The driving mechanism, driving rod, driving disc, transmission belt, and transmission disc together constitute a driving assembly.

[0009] Furthermore, a discharge pipe is installed at the bottom end of the conical discharge pipe, and a connecting pipe is rotatably connected to the bottom end of the discharge pipe. A solenoid valve is provided on the inner wall of the connecting pipe, and a feeding pipe is installed on the surface of the connecting pipe. The top end of the feeding pipe is fixedly connected to the bottom of the steel frame platform.

[0010] Furthermore, a connecting pipe is installed at the bottom of the automatic batching mechanism, and the connecting pipe is installed at the top of the mixing mechanism.

[0011] Furthermore, ladders are installed on both sides of the steel frame platform, and guardrails are installed on the other two sides of the steel frame platform.

[0012] Furthermore, the dust-free feeding mechanism includes a feeding hopper, an induced draft dust collector, and an anti-backflow hopper. The feeding hopper has a feeding port on one side, the induced draft dust collector is installed on one side of the feeding hopper and communicates with the inside of the feeding hopper, the anti-backflow hopper is installed at the bottom of the feeding hopper, and the discharge end of the anti-backflow hopper is connected to the bottom end of the conveying pipe.

[0013] Furthermore, the vacuum feeding mechanism includes a vacuum pump, a buffer hopper, and a level sensor. The vacuum pump is installed on the top of the buffer hopper, and the suction end of the vacuum pump is connected to the interior of the buffer hopper. The top end of the conveying pipe is connected to the feed inlet of the buffer hopper, and the level sensor is installed on the inner wall of the buffer hopper.

[0014] Furthermore, the automatic batching mechanism includes a weighing module, a batching hopper, and a dustproof flexible connection cover. The batching hopper is installed on the inner wall of the steel frame platform through the dustproof flexible connection cover, and the weighing module is installed between the batching hopper and the steel frame platform.

[0015] Compared with existing technologies, the present invention provides an intelligent high-density metal powder mixer. Through the arrangement of a protective frame mounted on the surface of the mixing mechanism, a drive assembly mounted on the inner wall of the protective frame, a mixing cylinder rotatably connected to the inner wall of the mixing mechanism, a ring-shaped pushing block mounted on the inner wall of the mixing cylinder, movable rods rotatably connected to both sides of the inner top wall of the mixing mechanism, a drive gear plate mounted on the surface of the movable rods, and multiple sets of stirring rods mounted on the surface of the movable rods, the pushing block and the drive gear plate are meshed together. When the mixing cylinder rotates under the drive assembly, the pushing block rotates synchronously with the mixing cylinder and drives the drive gear plate to rotate, thereby driving the movable rods and stirring rods to rotate around their own axes. Because the rotation direction of the mixing cylinder is opposite to or has a relative speed difference with the rotation direction of the stirring rods, the metal powder inside the mixing cylinder is simultaneously subjected to the tumbling action of the cylinder wall and the multi-point shearing and scattering action of the stirring rods. This achieves a composite motion of the mixing cylinder's revolution and the stirring rods' rotation, thus solving the problem of stratification and segregation of high-density metal powders due to large differences in specific gravity, and improving the mixing uniformity of metal powders of different components.

[0016] Through the coordinated operation of the feeding hopper, induced draft dust collector, and anti-backflow hopper inside the dust-free feeding mechanism; the vacuum pump, buffer hopper, and level sensor inside the vacuum feeding mechanism; and the weighing module, batching hopper, and dustproof flexible connection cover inside the automatic batching mechanism, the metal powder is collected and filtered in real time by the induced draft dust collector during the feeding process. The anti-backflow hopper prevents the reverse airflow in the conveying pipe from impacting the feeding hopper. The vacuum pump automatically starts and stops according to the real-time detection signal of the level sensor to maintain the dynamic balance of the material in the buffer hopper. The weighing module performs high-precision weighing with the batching hopper isolated from the steel frame platform by the dustproof flexible connection cover. This achieves closed-loop automated control of the entire process of feeding, loading, and batching, thereby solving the problems of dust pollution caused by high-density metal powder during transportation and the low accuracy and inefficiency of manual batching. It achieves the effect of dust-free operation and intelligent precise proportioning. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is one of the overall structural schematic diagrams provided in the embodiments of the present invention;

[0019] Figure 2 This is the second overall structural schematic diagram provided for an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the mixing cylinder structure provided in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the stirring rod structure provided in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the push block structure provided in an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the solenoid valve structure provided in an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Steel frame platform; 2. Dust-free feeding mechanism; 3. Vacuum feeding mechanism; 4. Conveying pipe; 5. Automatic batching mechanism; 6. Mixing mechanism; 7. Protective frame; 8. Mixing cylinder; 9. Push block; 10. Movable rod; 11. Drive gear plate; 12. Stirring rod; 13. Drive mechanism; 14. Drive rod; 15. Drive disc; 16. Transmission belt; 17. Conical discharge pipe; 18. Transmission disc; 19. Discharge pipe; 20. Connecting pipe; 21. Solenoid valve; 22. Feeding pipe; 23. Connecting pipe; 24. Ladder. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] As attached Figure 1 To be continued Figure 6 As shown:

[0028] Example 1:

[0029] This invention provides an intelligent high-density metal powder mixer, comprising a steel frame platform 1, a dust-free feeding mechanism 2 disposed on one side of the bottom of the steel frame platform 1, a vacuum feeding mechanism 3 installed on the top of the steel frame platform 1, a conveying pipe 4 installed on the top of the dust-free feeding mechanism 2, and the top end of the conveying pipe 4 installed on one side of the vacuum feeding mechanism 3, an automatic batching mechanism 5 installed on the inner wall of the steel frame platform 1 below the vacuum feeding mechanism 3, and the output end of the vacuum feeding mechanism 3 installed at the bottom end of the automatic batching mechanism 5, and a mixing mechanism 6 installed on the inner wall of the steel frame platform 1 below the automatic batching mechanism 5;

[0030] A protective frame 7 is mounted on the surface of the mixing mechanism 6. A drive assembly is mounted on the inner wall of the protective frame 7. A mixing cylinder 8 is rotatably connected to the inner wall of the mixing mechanism 6. A push block 9 arranged in a ring is mounted on the inner wall of the mixing cylinder 8. Movable rods 10 are rotatably connected to both sides of the inner top wall of the mixing mechanism 6. A drive gear 11 is mounted on the surface of the movable rod 10, and the drive gear 11 meshes with the push block 9. Multiple stirring rods 12 are mounted on the surface of the movable rod 10. A drive mechanism 13 is mounted on the inner wall of the protective frame 7. A drive rod 14 is mounted on the output end of the drive mechanism 13. A drive disk 15 is mounted on the bottom end of the drive rod 14. A drive belt 16 is rotatably connected to the surface of the mixing cylinder 8. A conical discharge pipe 17 is installed at the bottom of the mixing cylinder 8. A drive disc 18 is installed on the surface of the conical discharge pipe 17, and the drive belt 16 is rotatably connected to the surface of the drive disc 18. The drive mechanism 13, drive rod 14, drive disc 15, drive belt 16 and drive disc 18 together constitute the drive assembly. A discharge pipe 19 is installed at the bottom end of the conical discharge pipe 17. A connecting pipe 20 is rotatably connected to the bottom end of the discharge pipe 19. A solenoid valve 21 is provided on the inner wall of the connecting pipe 20. A feeding pipe 22 is installed on the surface of the connecting pipe 20, and the top end of the feeding pipe 22 is fixedly connected to the bottom of the steel frame platform 1.

[0031] In use, the mixing mechanism 6 serves as the main body for the overall mixing action. A protective frame 7 is fixedly installed on its surface, and the interior of the protective frame 7 forms a space for installing the drive assembly. The mixing cylinder 8 is rotatably connected to the inner wall of the mixing mechanism 6. A ring-shaped push block 9 is fixedly installed on the inner wall of the mixing cylinder 8. Two movable rods 10 are provided, rotatably connected to both sides of the inner top wall of the mixing mechanism 6. A drive gear 11 is fixedly installed on the surface of each movable rod 10. The drive gear 11 meshes with the push block 9 on the inner wall of the mixing cylinder 8, allowing the movable rod 10 to rotate synchronously through the meshing transmission between the push block 9 and the drive gear 11 when the mixing cylinder 8 rotates. Multiple sets of stirring rods 12 are axially spaced on the surface of each movable rod 10. The stirring rods 12 stir the metal powder inside the mixing cylinder 8 as the movable rod 10 rotates. The drive mechanism 13 is fixedly installed on the inner wall of the protective frame 7, and its output end is connected to the drive rod 10. 4. A drive disc 15 is fixedly installed at the bottom end of the drive rod 14. The surface of the drive disc 15 is provided with an annular groove for accommodating the transmission belt 16. A conical discharge pipe 17 is fixedly installed at the bottom of the mixing cylinder 8. A transmission disc 18 is fixedly installed on the surface of the conical discharge pipe 17. The transmission belt 16 is wound between the drive disc 15 and the transmission disc 18. The power output by the drive mechanism 13 is transmitted to the transmission disc 18 through the drive rod 14, the drive disc 15, and the transmission belt 16, thereby driving the conical discharge pipe 17 and the mixing cylinder 8 fixedly connected thereto to rotate as a whole. A discharge pipe 19 is fixedly installed at the bottom end of the conical discharge pipe 17. A connecting pipe 20 is installed at the bottom end of the discharge pipe 19 by means of rotational connection. A solenoid valve 21 is rotatably connected to the inner wall of the connecting pipe 20 to control the discharge opening and closing. A feeding pipe 22 is fixedly installed on the surface of the connecting pipe 20. The top end of the feeding pipe 22 is fixedly connected to the bottom of the steel frame platform 1 to realize the directional conveying of the mixed material.

[0032] Example 2:

[0033] This embodiment is basically the same as the previous embodiment, except that a connecting pipe 23 is installed at the bottom of the automatic batching mechanism 5, and the connecting pipe 23 is installed at the top of the mixing mechanism 6. Ladders 24 are installed on both sides of the steel frame platform 1, and guardrails are installed on the other two sides of the steel frame platform 1. The dust-free feeding mechanism 2 includes a feeding hopper, an induced draft dust collector, and an anti-backflow hopper. A feeding port is opened on one side of the feeding hopper. The induced draft dust collector is installed on one side of the feeding hopper and communicates with the inside of the feeding hopper. The anti-backflow hopper is installed at the bottom of the feeding hopper, and the anti-backflow hopper is... The discharge end of the hopper is connected to the bottom end of the conveying pipe 4. The vacuum feeding mechanism 3 includes a vacuum pump, a buffer silo, and a level sensor. The vacuum pump is installed on the top of the buffer silo, and the suction end of the vacuum pump is connected to the inside of the buffer silo. The top end of the conveying pipe 4 is connected to the inlet of the buffer silo. The level sensor is installed on the inner wall of the buffer silo. The automatic batching mechanism 5 includes a weighing module, a batching hopper, and a dustproof flexible connection cover. The batching hopper is installed on the inner wall of the steel frame platform 1 through the dustproof flexible connection cover. The weighing module is installed between the batching hopper and the steel frame platform 1.

[0034] In use, ladders 24 are installed on both sides of the steel frame platform 1. Operators use the ladders 24 to go up and down the steel frame platform 1 to inspect, maintain, and operate the various mechanisms. The dust-free feeding mechanism 2 is located on one side of the bottom of the steel frame platform 1. It includes a feeding hopper, an induced draft dust collector, and an anti-backflow hopper. A feeding port is opened on one side of the feeding hopper for operators to feed high-density metal powder into the feeding hopper. The induced draft dust collector is installed on one side of the feeding hopper and is connected to the inside of the feeding hopper. During the feeding process, the induced draft dust collector continuously operates to suck in and filter the dust generated in the feeding hopper, preventing dust from overflowing into the surrounding environment. The anti-backflow hopper... Installed at the bottom of the feeding hopper, its discharge end is connected to the bottom end of the conveying pipe 4. The internal structure of the anti-backflow hopper can effectively prevent the reverse airflow generated by airflow fluctuations in the conveying pipe 4 from impacting the feeding hopper, ensuring the continuous and stable feeding process. The vacuum feeding mechanism 3 is installed on the top of the steel frame platform 1. It includes a vacuum pump, a buffer hopper, and a level sensor. The vacuum pump is installed on the top of the buffer hopper and its suction end is connected to the inside of the buffer hopper to create a negative pressure environment inside the buffer hopper. The top end of the conveying pipe 4 is connected to the inlet of the buffer hopper. Under the action of negative pressure, the metal powder output by the dust-free feeding mechanism 2 is conveyed through the... The feed pipe 4 is sucked into the buffer hopper. A level sensor is installed on the inner wall of the buffer hopper to detect the material accumulation height in real time. When the material level reaches the preset upper limit, the vacuum pump is controlled to stop feeding. When the material level drops to the preset lower limit, the vacuum pump is controlled to restart to replenish the material. The automatic batching mechanism 5 is installed on the inner wall of the steel frame platform 1 and is located below the vacuum feeding mechanism 3. The output end of the vacuum feeding mechanism 3 is installed at the bottom of the automatic batching mechanism 5. The automatic batching mechanism 5 includes a weighing module, a batching hopper, and a dustproof flexible connection cover. The batching hopper is installed on the inner wall of the steel frame platform 1 through the dustproof flexible connection cover to prevent dust. The flexible connection cover ensures the relative independence between the batching hopper and the steel frame platform 1 while preventing dust leakage during the batching process. The weighing module is installed between the batching hopper and the steel frame platform 1 to detect the weight change of the material in the batching hopper in real time. The vacuum feeding mechanism 3 conveys the metal powder into the batching hopper. The weighing module accurately measures the material entering the batching hopper. When the preset weight ratio is reached, the feeding stops. The material in the batching hopper is conveyed to the downstream mixing mechanism 6 through the bottom outlet. Through the coordinated operation of the above structures, the entire process of high-density metal powder processing, from feeding, dust removal, negative pressure feeding, automatic material level control to precise proportioning, is fully automated.

[0035] Application example:

[0036] This invention relates to an intelligent high-density metal powder mixer applied to the raw material pretreatment process in the metal powder metallurgy industry. Specifically, it is suitable for the precise mixing of multiple components of high-density metal powders such as tungsten powder, molybdenum powder, cobalt powder, and copper powder. In powder metallurgy processes, metal powders of different particle sizes and types need to be uniformly mixed according to specific formulation ratios to obtain a homogeneous mixed powder, providing stable raw materials for subsequent pressing and sintering processes. However, high-density metal powders are characterized by poor flowability, easy dust generation, easy segregation, and large specific gravity differences. Traditional mixing equipment struggles to achieve efficient, uniform, and dust-free mixing, especially during production batch changes, where residual materials can easily cause cross-contamination, affecting the performance of high-end cemented carbide or high-density alloy products. This invention addresses these industry pain points by providing an automated solution integrating dust-free feeding, negative pressure feeding, automatic weighing and batching, and efficient mixing.

[0037] First, the operator climbs onto the steel frame platform 1 via ladders 24 installed on both sides of the platform to perform pre-start checks on each mechanism, and then starts the equipment's main control system. The operator transports bagged or barrelled high-density metal powder to the dust-free feeding mechanism 2. The dust-free feeding mechanism 2 includes a feeding hopper, an induced draft dust collector, and an anti-backflow hopper. The operator opens the feeding port on one side of the feeding hopper and slowly pours the metal powder into it. During the feeding process, the induced draft dust collector operates continuously, creating a negative pressure inside the feeding hopper. This draws the metal dust raised during feeding into the dust collector for filtration and collection. The filtered clean air is then discharged outside the equipment, effectively preventing dust spillage and pollution of the working environment. Simultaneously, the anti-backflow hopper is installed at the bottom of the feeding hopper. Its special internal structure design creates a one-way barrier when airflow fluctuations occur within the conveying pipe 4, preventing reverse airflow from impacting the feeding hopper and ensuring a continuous and stable feeding process.

[0038] When the metal powder is fed into the dust-free feeding mechanism 2, the vacuum feeding mechanism 3 starts working. The vacuum feeding mechanism 3 includes a vacuum pump, a buffer silo, and a level sensor. The vacuum pump is installed on the top of the buffer silo, and its suction end is connected to the inside of the buffer silo. The vacuum pump runs continuously inside the buffer silo to create a negative pressure environment. The top end of the conveying pipe 4 is connected to the feed inlet of the buffer silo, and the bottom end is connected to the discharge end of the anti-backflow hopper. Under the action of negative pressure, the metal powder in the dust-free feeding mechanism 2 is sucked into the buffer silo through the conveying pipe 4. The metal powder is temporarily stored in the buffer silo and settles naturally. The level sensor is installed on the inner wall of the buffer silo to monitor the material accumulation height in the buffer silo in real time. When the material height reaches the preset upper limit threshold, the control system automatically controls the vacuum pump to stop running to stop feeding. When the material height drops to the preset lower limit threshold, the vacuum pump automatically restarts to replenish the feeding, realizing dynamic balance control of the material in the buffer silo and ensuring the continuity of upstream supply.

[0039] Metal powder in the buffer hopper falls into the automatic batching mechanism 5 through its bottom output end. The automatic batching mechanism 5 is installed on the inner wall of the steel frame platform 1 and located below the vacuum feeding mechanism 3. The automatic batching mechanism 5 includes a weighing module, a batching hopper, and a dustproof flexible connection cover. The batching hopper is installed on the inner wall of the steel frame platform 1 through the dustproof flexible connection cover. The dustproof flexible connection cover adopts a flexible sealing structure, which can effectively prevent dust leakage from the connection gap during the batching process while ensuring that the batching hopper and the steel frame platform 1 are relatively independent and not affected by external forces. The weighing module is installed between the batching hopper and the steel frame platform 1. A high-precision pressure sensor is used to detect the weight change of the material in the batching hopper in real time. When metal powder falls from the vacuum feeding mechanism 3 into the batching hopper, the weighing module continuously monitors the weight increment. The control system calculates the current powder weight in real time according to the preset formula ratio. When the preset ratio weight is reached, the control system issues a command to cut off the feeding path between the vacuum feeding mechanism 3 and the batching hopper, thus completing the accurate measurement of this batch of powder.

[0040] The precisely metered metal powder is conveyed downwards through the connecting pipe 23 at the bottom of the automatic batching mechanism 5 to the top inlet of the mixing mechanism 6, where it enters the mixing cylinder 8. A protective frame 7 is installed on the surface of the mixing mechanism 6, and a drive assembly is installed inside the protective frame 7. The drive assembly includes a drive mechanism 13, a drive rod 14, a drive disc 15, a transmission belt 16, and a transmission disc 18. The drive mechanism 13 is fixedly installed on the inner wall of the protective frame 7, and its output end is connected to the drive rod 14. The drive disc 15 is fixedly installed at the bottom end of the drive rod 14. A conical discharge pipe 17 is fixedly installed at the bottom of the mixing cylinder 8, and the transmission disc 18 is fixedly installed on the surface of the conical discharge pipe 17. The transmission belt 16 is wound between the drive disc 15 and the transmission disc 18. After the drive mechanism 13 is started, power is transmitted to the drive disc 15 via the drive rod 14. The drive disc 15 then transmits power to the transmission disc 18 via the transmission belt 16. The transmission disc 18 drives the conical discharge pipe 17 and the mixing cylinder 8, which is fixedly connected to it, to rotate as a whole. A ring of push blocks 9 are fixedly installed circumferentially on the inner wall of the mixing cylinder 8. The surface of the push blocks 9 is provided with a toothed structure. Movable rods 10 are rotatably connected to both sides of the inner top wall of the mixing mechanism 6. A drive gear disk 11 is fixedly installed on the surface of each movable rod 10. The drive gear disk 11 meshes with the push blocks 9 on the inner wall of the mixing cylinder 8. When the mixing cylinder 8 rotates under the drive of the drive assembly, the push blocks 9 rotate synchronously with the mixing cylinder 8. The push blocks 9 drive the drive gear disk 11 to rotate through meshing transmission. The drive gear disk 11 drives the movable rods 10 to rotate around their own axis. Multiple sets of stirring rods 12 are installed axially at intervals on the surface of the movable rods 10. When the stirring rods 12 rotate with the movable rods 10, they strongly stir the metal powder in the mixing cylinder 8. Since the rotation direction of the mixing cylinder 8 is opposite to or there is a relative speed difference between the rotation direction of the stirring rod 12, the metal powder inside the mixing cylinder 8 is driven and rolled by the cylinder wall of the mixing cylinder 8 and the multi-point shearing and throwing action of the stirring rod 12, so as to realize the multi-dimensional three-dimensional mixing of high-density metal powder and effectively overcome the problem of easy segregation of powders with different specific gravities.

[0041] After mixing, the control system opens the solenoid valve 21, which is rotatably connected to the inner wall of the connecting pipe 20 to control the discharge flow. The uniformly mixed metal powder sequentially enters the solenoid valve 21 through the bottom of the mixing cylinder 8, the conical discharge pipe 17, the discharge pipe 19, and the connecting pipe 20. After the solenoid valve 21 opens, the mixed powder is discharged through the feeding pipe 22 to the downstream receiving container or the next process equipment. The top of the feeding pipe 22 is fixedly connected to the bottom of the steel frame platform 1 to ensure the stability of the discharge channel. Throughout the application, the guardrails installed on the other two sides of the steel frame platform 1 provide safety protection for operators to inspect and maintain the platform. The coordinated actions between the various mechanisms are uniformly scheduled by the control system, realizing fully automated operation from feeding, dust removal, negative pressure feeding, automatic batching, mixing and stirring to finished product discharge.

[0042] Working principle: The steel frame platform 1 serves as the supporting skeleton of the entire machine. Ladders 24 installed on both sides allow operators to access the platform for maintenance operations. Guardrails on both sides provide safety protection. The dust-free feeding mechanism 2 is located at the bottom of the steel frame platform 1. Its internal feeding hopper receives high-density metal powder fed in by the operator. A dust collector installed on one side of the feeding hopper continuously creates negative pressure inside, sucking in and filtering the metal dust generated during feeding to prevent dust overflow. A dust collector is installed at the bottom of the feeding hopper. The anti-backflow hopper utilizes its internal unidirectional flow structure to prevent reverse airflow generated by airflow fluctuations within the conveying pipe 4 from impacting the feeding hopper, ensuring a continuous and stable feeding process. The metal powder output from the dust-free feeding mechanism 2 is conveyed via the conveying pipe 4 to the vacuum feeding mechanism 3. The vacuum feeding mechanism 3 is installed on the top of the steel frame platform 1. Its internal vacuum pump creates a negative pressure environment inside the buffer hopper through its suction end. The top of the conveying pipe 4 is connected to the inlet of the buffer hopper. Under negative pressure, the metal powder is sucked into the buffer hopper for temporary storage. A level sensor installed on the inner wall of the buffer silo monitors the material accumulation height in real time. When the material level reaches the preset upper limit, the vacuum pump is stopped to stop feeding. When the material level drops to the preset lower limit, the vacuum pump is restarted to replenish the material, thus achieving dynamic balance control of the material in the buffer silo. The metal powder in the buffer silo falls into the automatic batching mechanism 5 through the output end at its bottom. The automatic batching mechanism 5 is installed on the inner wall of the steel frame platform 1 and is located below the vacuum feeding mechanism 3. The batching hopper inside is installed on the inner wall of the steel frame platform 1 through a dustproof flexible connection cover. The dustproof flexible connection cover adopts a flexible sealing structure to keep the batching hopper and the steel frame platform 1 relatively independent to isolate external vibration interference and prevent dust leakage during the batching process. A weighing module installed between the batching hopper and the steel frame platform 1 monitors the weight change of the material in the batching hopper in real time. When the vacuum feeding mechanism 3 delivers metal powder into the batching hopper, the weighing module continuously monitors the weight increment. The control system accurately measures the material entering the batching hopper according to the preset formula ratio and stops feeding after the preset weight ratio is reached.The precisely metered metal powder is conveyed downwards through the connecting pipe 23 installed at the bottom of the automatic batching mechanism 5 to the top inlet of the mixing mechanism 6 and enters the mixing cylinder 8. The protective frame 7 installed on the surface of the mixing mechanism 6 forms a space to accommodate the drive assembly. The drive mechanism 13 is fixedly installed on the inner wall of the protective frame 7. After the drive mechanism 13 is started, its output end drives the drive rod 14 to rotate. The drive disc 15 fixedly installed at the bottom of the drive rod 14 rotates accordingly. The transmission belt 16 wound around the surface of the drive disc 15 transmits power to the transmission disc 18. The transmission disc 18 is fixedly installed at the bottom of the mixing cylinder 8. On the surface of the conical discharge pipe 17, the transmission disc 18 drives the mixing cylinder 8 to rotate as a whole through the conical discharge pipe 17. The mixing cylinder 8 is rotatably connected to the inner wall of the mixing mechanism 6. The push blocks 9, which are fixedly installed circumferentially on the inner wall of the mixing cylinder 8 and arranged in a ring, rotate synchronously with the mixing cylinder 8. The surface of the push blocks 9 is provided with a toothed structure and meshes with the drive gear disc 11 fixedly installed on the surface of the movable rod 10. The movable rod 10 is provided with two rods and is rotatably connected to both sides of the inner top wall of the mixing mechanism 6. When the push blocks 9 rotate with the mixing cylinder 8, they drive the drive gear disc 11 to rotate through meshing transmission. The drive gear disc 11 drives the movable rod 10 to rotate. The rod 10 rotates around its own axis. Multiple sets of stirring rods 12, spaced axially along the surface of the movable rod 10, stir the metal powder inside the mixing cylinder 8 as the rod 10 rotates. Due to the relative speed difference between the rotation direction of the mixing cylinder 8 and the rotation direction of the stirring rods 12, the metal powder inside the mixing cylinder 8 is tumbled by the cylinder wall and subjected to multi-point shearing and scattering by the stirring rods 12, achieving multi-dimensional mixing. After mixing, a conical discharge pipe 17 fixedly installed at the bottom of the mixing cylinder 8 collects the mixed powder. A discharge pipe 19 fixedly installed at the bottom of the conical discharge pipe 17 discharges the powder out. A connecting pipe 20, rotatably connected to the bottom of the outlet pipe 19, connects the discharge channel. A solenoid valve 21, rotatably connected to the inner wall of the connecting pipe 20, is controlled by a control system to open and close, controlling the discharge flow. A feeding pipe 22, fixedly installed on the surface of the connecting pipe 20, directionally conveys the mixed metal powder to a downstream receiving container or the next process equipment. The top end of the feeding pipe 22 is fixedly connected to the bottom of the steel frame platform 1 to ensure the stability of the discharge channel. Through the coordinated operation of these mechanisms, continuous automated operation of high-density metal powder processing is achieved, from feeding, dust removal, negative pressure feeding, automatic batching, multi-dimensional mixing to finished product discharge.

[0043] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An intelligent high-density metal powder mixer, comprising a steel frame platform (1), characterized in that, A dust-free feeding mechanism (2) is provided on one side of the bottom of the steel frame platform (1), a vacuum feeding mechanism (3) is installed on the top of the steel frame platform (1), a conveying pipe (4) is installed on the top of the dust-free feeding mechanism (2), and the top end of the conveying pipe (4) is installed on one side of the vacuum feeding mechanism (3). An automatic batching mechanism (5) is installed on the inner wall of the steel frame platform (1) below the vacuum feeding mechanism (3), and the output end of the vacuum feeding mechanism (3) is installed at the bottom end of the automatic batching mechanism (5). A mixing mechanism (6) is installed on the inner wall of the steel frame platform (1) below the automatic batching mechanism (5). The surface of the mixing mechanism (6) is equipped with a protective frame (7), the inner wall of the protective frame (7) is equipped with a drive assembly, the inner wall of the mixing mechanism (6) is rotatably connected to a mixing cylinder (8), the inner wall of the mixing cylinder (8) is equipped with a push block (9) arranged in a ring, both sides of the inner top wall of the mixing mechanism (6) are rotatably connected to movable rods (10), the surface of the movable rod (10) is equipped with a drive gear (11), and the drive gear (11) and the push block (9) are meshed with each other, and the surface of the movable rod (10) is equipped with multiple sets of stirring rods (12).

2. The intelligent high-density metal powder mixer according to claim 1, characterized in that, The inner wall of the protective frame (7) is equipped with a drive mechanism (13), the output end of the drive mechanism (13) is equipped with a drive rod (14), the bottom end of the drive rod (14) is equipped with a drive disc (15), and the surface of the drive disc (15) is rotatably connected with a transmission belt (16).

3. The intelligent high-density metal powder mixer according to claim 2, characterized in that, The bottom of the mixing cylinder (8) is equipped with a conical discharge pipe (17), and a transmission disc (18) is installed on the surface of the conical discharge pipe (17). The transmission belt (16) is rotatably connected to the surface of the transmission disc (18). The driving mechanism (13), driving rod (14), driving disc (15), transmission belt (16) and transmission disc (18) together constitute the driving assembly.

4. The intelligent high-density metal powder mixer according to claim 3, characterized in that, The bottom end of the conical discharge pipe (17) is equipped with a discharge pipe (19), and the bottom end of the discharge pipe (19) is rotatably connected to a connecting pipe (20). The inner wall of the connecting pipe (20) is provided with a solenoid valve (21). The surface of the connecting pipe (20) is equipped with a feeding pipe (22), and the top end of the feeding pipe (22) is fixedly connected to the bottom of the steel frame platform (1).

5. The intelligent high-density metal powder mixer according to claim 1, characterized in that, The bottom of the automatic batching mechanism (5) is equipped with a connecting pipe (23), and the connecting pipe (23) is installed at the top of the mixing mechanism (6).

6. The intelligent high-density metal powder mixer according to claim 1, characterized in that, Ladders (24) are installed on both sides of the steel frame platform (1), and guardrails are installed on the other two sides of the steel frame platform (1).

7. The intelligent high-density metal powder mixer according to claim 1, characterized in that, The dust-free feeding mechanism (2) includes a feeding hopper, an induced draft dust collector and an anti-backflow hopper. A feeding port is provided on one side of the feeding hopper. The induced draft dust collector is installed on one side of the feeding hopper and communicates with the inside of the feeding hopper. The anti-backflow hopper is installed at the bottom of the feeding hopper, and the discharge end of the anti-backflow hopper is connected to the bottom end of the conveying pipe (4).

8. The intelligent high-density metal powder mixer according to claim 1, characterized in that, The vacuum feeding mechanism (3) includes a vacuum pump, a buffer silo and a level sensor. The vacuum pump is installed on the top of the buffer silo, and the suction end of the vacuum pump is connected to the inside of the buffer silo. The top end of the conveying pipe (4) is connected to the feed inlet of the buffer silo, and the level sensor is installed on the inner wall of the buffer silo.

9. The intelligent high-density metal powder mixer according to claim 1, characterized in that, The automatic batching mechanism (5) includes a weighing module, a batching hopper and a dustproof flexible connection cover. The batching hopper is installed on the inner wall of the steel frame platform (1) through the dustproof flexible connection cover, and the weighing module is installed between the batching hopper and the steel frame platform (1).

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