Mixing and stirring equipment and its usage for precise proportioning of NdFeB rare earth alloy components

Abstract

This invention discloses a mixing and stirring device and its method for precisely proportioning the components of neodymium iron boron rare earth alloys. It relates to the technical field of mixing equipment and includes a base, a vertical frame, and a mixing tank assembly. The mixing tank assembly includes a separation tank and a mixing tank located at the lower end of the separation tank. First, the primary particles are screened through a No. 1 screen inside the separation tank. Primary particles that meet the particle size requirements are directly conveyed into the mixing tank after screening. Larger secondary particles are intercepted and directed into a crushing component by flipping the mixing tank assembly. After crushing into primary particles, they undergo secondary separation through a No. 2 screen with the same aperture as the No. 1 screen. This ensures that only particles meeting the standard can enter the mixing tank for mixing, achieving that all primary particles entering the mixing tank are fine powder of the same particle size grade. This eliminates the interference of primary particle size differences on mixing and avoids component segregation problems caused by uneven particle size during alloy smelting.

Description

Technical Field

[0001] This invention belongs to the technical field of mixing equipment, specifically a mixing equipment and method for precisely proportioning neodymium iron boron rare earth alloy components. Background Technology

[0002] Neodymium iron boron (NdFeB) rare earth alloys, currently the permanent magnet materials with the highest magnetic energy product, have been widely used in new energy vehicle drive motors, wind turbines, precision electronic components (such as hard disk heads and sensors), and consumer electronics due to their excellent magnetic properties. As downstream industries develop towards high power, miniaturization, and long lifespan, higher demands are placed on the stability and consistency of the magnetic properties (coercivity, remanence, and maximum energy product) of NdFeB alloys. For example, NdFeB magnets used in new energy vehicle drive motors need to ensure a magnetic performance decay rate of less than 5% under long-term high-temperature conditions. This requires the internal Nd2Fe... 14 The B main phase has a uniform structure with no obvious elemental segregation or impurity phases.

[0003] However, in the preparation of NdFeB rare earth alloys, it is necessary to mix various primary particles (Nd powder, Fe powder, FeB alloy powder, and other modified auxiliary powders) together. The difference in particle size of the primary particles can easily lead to uneven mixing, which can cause the fine powder to melt rapidly and the coarse powder to melt slowly during smelting. Ultimately, this results in local element enrichment and damages Nd2Fe. 14 The main phase structure is B, but existing mixing equipment only has the function of mixing and stirring. It has not established a unified particle size verification standard and cannot eliminate particle size differences. As a result, the original particles still have coarse and fine inclusions after mixing, which makes it difficult to meet the stringent requirements of high-performance magnets for component uniformity. Summary of the Invention

[0004] To address the problems mentioned in the background art, this invention proposes a mixing and stirring device and a method for precisely proportioning neodymium iron boron rare earth alloy components.

[0005] The objective of this invention can be achieved through the following technical solutions: A mixing and stirring device for precisely proportioning neodymium iron boron rare earth alloy components includes a base, a vertical frame, and a mixing tank assembly. The vertical frame is mounted on the base. The mixing tank assembly includes a separation tank and a mixing tank located at the lower end of the separation tank. A separation mechanism is installed on the separation tank. The separation mechanism includes a first screen, a crushing component, a suction component, and a second screen. The No. 1 screen is located inside the separation tank, and a separation component is located above the No. 1 screen. The second screen is positioned directly below the first screen, and the crushing component is installed between the first screen and the second screen. The suction assembly is installed between the separation tank and the mixing tank.

[0006] As a further preferred embodiment of this technical solution: the material suction assembly includes a first collecting hopper and a conveying pipe. The first collecting hopper is disposed on the bottom surface of the first screen. One end of the conveying pipe is connected to the first collecting hopper, and the other end of the conveying pipe is connected to the mixing tank. The suction assembly also includes a suction fan mounted on the outer wall of the separation tank via a mounting bracket, and the port of the suction fan is connected to the conveying pipe; The conveying pipe is also equipped with a guide plate on the top outer wall of the section inside the separator tank.

[0007] As a further preferred embodiment of this technical solution: the crushing assembly includes a second collecting hopper and a crushing chamber disposed on the inner wall of the separation tank, the second collecting hopper being disposed directly below the first collecting hopper, and the crushing chamber being installed through and directly below the second collecting hopper; The crushing chamber is rotatably connected to two driven shafts and a drive shaft disposed between the two driven shafts. The end of the drive shaft is provided with a drive gear, and the end of each driven shaft is provided with a driven gear that meshes with the drive gear. Both the drive shaft and the driven shaft are equipped with crushing roller shafts, which are located inside the crushing chamber. A crushing drive motor is also provided on the outer wall of the crushing chamber, and the output end of the crushing drive motor is connected to the end of the drive shaft away from the drive gear. Furthermore, the second screen can be detachably installed between the separation tank and the mixing tank. A mounting base is provided at the center of the second screen, and a second vibration motor is provided on the bottom surface of the mounting base.

[0008] As a further preferred embodiment of this technical solution: a baffle plate is movably provided on the outer side of the No. 1 screen, located inside the separation tank. Several guide grooves arranged in a circular array are provided on the side wall of the baffle plate, and guide blocks with the same number of guide grooves and corresponding to each other are also provided on the inner wall of the separation tank. The separation mechanism also includes a lifting assembly for driving the baffle plate to move up and down. The lifting assembly includes a baffle shell and a second power cylinder. The second power cylinder is installed inside the baffle shell, which is fixedly connected to the inner wall of the separation tank. The output end of the second power cylinder is fixedly connected to the baffle plate.

[0009] As a further preferred embodiment of this technical solution: the separation tank includes a top plate, and the separation assembly is mounted on the top plate; The separation assembly includes a bearing and a drive shaft. The bearing is mounted on the top plate, and the drive shaft is mounted on the bearing. The lower end of the drive shaft is connected to a transmission shaft via a flexible coupling. Multiple push plates are arranged in a ring array on the side wall of the transmission shaft, all located above the No. 1 screen, and each push plate is equipped with a set of vibration components. The separation assembly also includes a separation drive motor mounted on the top plate, and the separation drive motor is connected to the drive shaft via a transmission connection. Each set of vibration components includes a protective cover, a first vibration motor, and a vibration fork. The protective cover is mounted on the push plate, the first vibration motor is located inside the protective cover, and the vibration fork is connected to the working end of the first vibration motor.

[0010] As a further preferred embodiment of this technical solution: the mixing tank is provided with a weighing component, which includes a weighing sensor and a weighing disk. The weighing sensor is installed on the bottom wall of the mixing tank, and the weighing disk is located above the weighing sensor. Furthermore, a weight display is installed on the vertical frame to be used in conjunction with the weighing sensor.

[0011] As a further preferred embodiment of this technical solution: the vertical frame is equipped with a tilting mechanism for driving the mixing tank assembly to tilt. The flipping mechanism includes two rotating shafts symmetrically arranged on the side wall of the separation tank, and the two rotating shafts are respectively rotatably mounted on corresponding vertical frames; A tilting drive motor is mounted on the vertical frame via a second connecting seat, and the output end of the tilting drive motor is connected to any one of the rotating shafts.

[0012] As a further preferred embodiment of this technical solution: a No. 1 connecting seat is also provided on the outer wall of the separating tank, and a No. 1 power cylinder is installed on the No. 1 connecting seat. The working end of the No. 1 power cylinder is connected to the mixing tank through a fixing frame. Furthermore, a sealing door is provided on the side wall of the mixing tank.

[0013] As a further preferred embodiment of this technical solution: the mixing tank is also equipped with a stirring and mixing assembly, which includes a stirring shaft and stirring blades. The stirring blades are disposed on the stirring shaft and located above the weighing plate. The stirring shaft is rotatably connected to the separation tank, and a stirring and mixing drive motor is disposed on the outer wall of the mixing tank. The output end of the stirring and mixing drive motor is connected to the bottom of the stirring shaft.

[0014] As a further preferred embodiment of this technical solution, the method of using a mixing and stirring device for precisely proportioning NdFeB rare earth alloy components includes the following steps: S1: One type of primary particles for preparing NdFeB is added to the separation tank through a feeding hopper and falls onto the No. 1 screen with an 8μm aperture. Then, the separation drive motor is started, which drives the pusher plate to move the primary particles. At the same time, the vibrating steel fork is driven to vibrate and disperse them. The primary particles with a particle size of less than 8μm fall into the No. 1 collection hopper, while the secondary particles with a particle size of more than 8μm remain on the No. 1 screen. S2: Start the suction fan to send the primary particles in the collection hopper into the mixing tank through the conveying pipe; S3: Start the second power cylinder to raise the baffle plate, then start the tilting drive motor to tilt the mixing tank. The secondary particles fall into the crushing chamber. Then, start the crushing drive motor to crush the secondary particles into primary particles, and after screening through the second screen, they enter the mixing tank. The tertiary particles with a particle size greater than 8μm are intercepted on the second screen. S4: Monitor the weight of the primary particles obtained inside the mixing tank using a weighing sensor, and replenish the primary particles to the target weight according to the preset ratio; S5: Repeat steps S1-S4 to obtain the remaining types of neodymium iron boron primary particles that meet the particle size standard. After all types of primary particles enter the mixing tank, start the stirring and mixing drive motor to stir. After the mixing is completed, open the sealing door and tilt the mixing tank through the tilting mechanism to pour out the mixed primary particles. S6: Separate the separation tank and mixing tank through the No. 1 power cylinder, remove the No. 2 screen and collect the tertiary particles.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the primary particles are first screened through a No. 1 screen in the separation tank. Primary particles that meet the particle size requirements are directly conveyed to the interior of the mixing tank after screening, while larger secondary particles are intercepted and directed into the crushing component by flipping the mixing tank assembly. After being crushed into primary particles, they are then separated a second time through a No. 2 screen with the same aperture as the No. 1 screen. This ensures that only particles that meet the standard can enter the mixing tank for mixing and stirring. This ensures that all primary particles entering the mixing tank are fine powder of the same particle size grade, eliminating the interference of particle size differences on mixing. This allows for uniform diffusion of elements in subsequent mixing steps and effectively avoids component segregation problems caused by uneven particle size during alloy smelting.

[0016] 2. In this invention, the vibrating steel fork and push plate in the separation component work together to break up the aggregated original particles, ensuring that all fine powders that meet the particle size requirements can pass through the screen, avoiding the situation of "small particles being trapped by large particles" or "fine powder agglomeration that cannot be separated".

[0017] 3. In this invention, the primary particles that meet the particle size requirements after separation are directly transported from the separation tank to the mixing tank through the suction component. The secondary particles with larger particle sizes mostly meet the standards after secondary crushing and fall into the interior of the mixing tank. The entire process is sealed and there is no exposure, which avoids the loss of fine powder caused by wind blowing and spillage during transportation.

[0018] 4. In this invention, the weighing component in the mixing tank can monitor the weight of the primary particle size after separation in real time. The operator can replenish the trace losses caused by the separation and crushing process according to the preset ratio, so as to ensure that the weight of the primary particle in the final mixture matches the rated ratio.

[0019] 5. In this invention, the flexible coupling can absorb the vibration of the vibrating components and reduce the wear between the drive shaft and the separation drive motor and bearings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention from another perspective; Figure 3 This is a cross-sectional view of the separation tank of the present invention; Figure 4 This is a three-dimensional structural diagram of the separation component of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a three-dimensional structural diagram of the suction assembly of the present invention; Figure 7 This is a schematic diagram of the baffle plate of the present invention; Figure 8 This is a schematic diagram of the structure of the pulverizing component of the present invention; Figure 9 This is a cross-sectional view of the separation tank of the present invention; Figure 10 This is a schematic diagram of the structure of the No. 2 screen of the present invention.

[0021] Legend: 100, Base; 200, Vertical Frame; 300, Mixing Tank Assembly; 301, Separating Tank; 302, Mixing Tank; 303, Sealing Door; 304, Connecting Seat No. 1; 305, Power Cylinder No. 1; 306, Fixing Frame; 307, Feed Hopper; 308, Top Plate; 400, Separating Mechanism; 401, Separating Component; 4011, Separating Drive Motor; 4012, Bearing; 4013, Drive Shaft; 4014, Flexible Coupling; 4015, Transmission Shaft; 4016, Push Plate; 4017, Protective Cover; 4018, Vibrating Motor No. 1; 4019, Vibrating Steel Fork; 402, Baffle Plate; 4021, Guide Groove; 403, Screen No. 1; 404, Guide Block; 405, Lifting Component; 4051, Baffle Shell; 4052, Power Cylinder No. 2; 406, Crushing Components; 4061, Crushing drive motor; 4062, Drive shaft; 4063, Driven shaft; 4064, Crushing roller shaft; 4065, Drive gear; 4066, Driven gear; 4067, Second collection hopper; 4068, Crushing chamber; 407, Weighing assembly; 4071, Weighing sensor; 4072, Weighing disc; 408, Suction assembly; 4081, First collection hopper; 4082, Conveying pipe; 4083, Mounting bracket; 4084, Suction fan; 4085, Guide plate; 409, Second screen; 410, Mounting base; 411, Second vibration motor; 500, Mixing assembly; 501, Mixing drive motor; 502, Mixing shaft; 503, Mixing blades; 700, Tilting mechanism; 701, Second connecting base; 702, Tilting drive motor; 703, Rotating shaft. Detailed Implementation

[0022] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-10This application provides a mixing and stirring device for precisely proportioning NdFeB rare earth alloy components, including a base 100, a vertical frame 200, and a mixing tank assembly 300. The vertical frame 200 is mounted on the base 100. The mixing tank assembly 300 includes a separation tank 301 and a mixing tank 302 disposed at the lower end of the separation tank 301. A feeding hopper 307 is provided through the top of the separation tank 301 for adding raw particles for preparing NdFeB rare earth alloy components into the separation tank 301. A separation mechanism 400 is installed on the separation tank 301. The separation mechanism 400 includes a first screen 403, a crushing component 406, a suction component 408, and a second screen 409. It should be noted that the first screen 403 and the second screen 409... The mesh size of the screen 409 is the same, which can screen out the original particles with the required particle radius. The first screen 403 is set inside the separation tank 301 and is used to screen the original particles with different radii. The first screen 403 can block the secondary particles with a particle size larger than the mesh size of the first screen 403 when they are added into the separation tank 301. The secondary particles with a particle size smaller than the mesh size of the first screen 403 pass through the first screen 403 and fall into the suction component 408. The separation component 401 is set above the first screen 403 to promote the movement of the original particles, which can improve the flowability of the original particles on the first screen 403 and increase the probability of the primary particles entering the suction component 408. The second screen 409 is located directly below the first screen 403, and the crushing component 406 is installed between the first screen 403 and the second screen 409. The suction assembly 408 is installed between the separation tank 301 and the mixing tank 302 to transport the primary particles screened out by the No. 1 screen 403 into the interior of the mixing tank 302.

[0024] Specifically, firstly, one type of primary particles for preparing NdFeB rare earth alloys is added from the feed hopper 307 into the separator 301, falling above the first screen 403. Then, the separator 401 drives the primary particles above the first screen 403 to flow, causing primary particles to fall from above the first screen 403 to below, while secondary particles are intercepted above the first screen 403. The primary particles then pass through the crushing assembly 406 and the second screen 409 into the mixing tank 302, while the secondary particles are intercepted by the first screen 403. After processing, the raw particles fall into the crushing component 406. After being further crushed into primary particles by the crushing component 406, they enter the mixing tank 302 through the second screen 409. Then, other types of raw particles are added in sequence, and the above steps are repeated to ensure that all raw particles entering the mixing tank 302 are fine powders of the same particle size. This eliminates the interference of particle size differences on mixing, allowing each element to diffuse evenly in subsequent mixing steps and effectively avoiding composition segregation problems caused by uneven particle size during alloy smelting.

[0025] Furthermore, the suction assembly 408 includes a first collection hopper 4081 and a conveying pipe 4082. It should be noted that the function of the first collection hopper 4081 is to collect primary particles and centrally convey them into the interior of the conveying pipe 4082. The first collection hopper 4081 is located on the bottom surface of the first screen 403. One end of the conveying pipe 4082 is connected to the first collection hopper 4081, and the other end of the conveying pipe 4082 is connected to the mixing tank 302. The suction assembly 408 also includes a suction fan 4084 mounted on the outer wall of the separation tank 301 via a mounting bracket 4083, and the port of the suction fan 4084 is connected to the conveying pipe 4082. The conveying pipe 4082, located on the top outer wall of the inner section of the separator 301, is also equipped with a guide plate 4085, which can guide the flow of secondary particles as they fall into the second collection hopper 4067, preventing the secondary particles from falling onto the upper half of the outer wall of the conveying pipe 4082 located in the inner section of the mixing tank 302.

[0026] Specifically, by starting the suction fan 4084, after the primary particles are screened out by the first screen 403 and fall into the first collection hopper 4081, they are transported to the inside of the mixing tank 302.

[0027] Furthermore, the crushing assembly 406 includes a second collecting hopper 4067 and a crushing chamber 4068 disposed on the inner wall of the separation tank 301. The second collecting hopper 4067 is disposed directly below the first collecting hopper 4081. It should be noted that the second collecting hopper 4067 is used to collect the secondary particles together and let them flow into the interior of the crushing chamber 4068. The crushing chamber 4068 is installed through and directly below the second collecting hopper 4067. Two driven shafts 4063 and a drive shaft 4062 disposed between the two driven shafts 4063 are rotatably connected to the crushing chamber 4068. A drive gear 4065 is provided at the end of the drive shaft 4062, and a driven gear 4066 that meshes with the drive gear 4065 is provided at the end of each driven shaft 4063. Crushing rollers 4064 are provided on both the drive shaft 4062 and the driven shaft 4063, and are located inside the crushing chamber 4068. A crushing drive motor 4061 is also provided on the outer wall of the crushing chamber 4068. The output end of the crushing drive motor 4061 is connected to the end of the drive shaft 4062 away from the drive gear 4065. Furthermore, the second screen 409 can be detachably installed between the separation tank 301 and the mixing tank 302. A mounting base 410 is provided at the center of the second screen 409, and a second vibration motor 411 is provided on the bottom surface of the mounting base 410, which can generate vibration so that the original particles crushed by the crushing component 406 pass through the second screen 409 and fall into the interior of the mixing tank 302.

[0028] Specifically, after the primary particles above screen 403 are completely screened out, the mixing tank assembly 300 is tilted as a whole. The secondary particles fall into the second collection hopper 4067, are collected, and then fall into the crushing chamber 4068. Before this, the crushing drive motor 4061 drives the drive shaft 4062 to rotate, which in turn drives the two driven shafts 4063 to rotate through the drive gear 4065 and driven gear 4066. The two driven shafts 4063 rotate in the opposite direction to the drive shaft 4062. Then the crushing roller shaft 4064 crushes the secondary particles, and most of them are crushed into primary particles. These particles are then screened again through screen 409 and fall into the mixing tank 302 to improve utilization. A small amount of incompletely crushed tertiary particles are intercepted on screen 409 for further processing.

[0029] Furthermore, a baffle plate 402 is movably installed on the outer side of the first screen 403, located inside the separation tank 301. It should be noted that the top surface of the baffle plate 402 is initially flush with the top surface of the first screen 403. Several guide grooves 4021 arranged in a circular array are provided on the side wall of the baffle plate 402. The inner wall of the separation tank 301 is also provided with guide blocks 404, which are the same number as the guide grooves 4021 and are used in a one-to-one correspondence. These guide blocks 404 can play a guiding role during the up-and-down movement of the baffle plate 402, preventing the baffle plate 402 from deviating from the designated path. The separation mechanism 400 also includes a lifting assembly 405 for driving the baffle plate 402 to move up and down. The lifting assembly 405 includes a baffle shell 4051 and a second power cylinder 4052. The second power cylinder 4052 is installed inside the baffle shell 4051, which is fixedly connected to the inner wall of the separation tank 301. The function of the baffle shell 4051 is to isolate the raw particles from the second power cylinder 4052. The output end of the second power cylinder 4052 is fixedly connected to the baffle plate 402. It should be noted that the top of the baffle shell 4051 is provided with an adapter hole, which allows the output end of the baffle shell 4051 to extend out.

[0030] Specifically, when only primary particles of secondary particles remain above the No. 1 screen 403, the No. 2 power cylinder 4052 is used to drive the baffle plate 402 to rise, thereby separating the baffle plate 402 from the No. 1 screen 403. An open channel is formed between the No. 1 screen 403 and the inner wall of the mixing tank 302. By tilting the mixing tank assembly 300, the secondary particles on the No. 1 screen 403 can be transferred to the crushing component 406.

[0031] Furthermore, the separation tank 301 includes a top plate 308, and the separation assembly 401 is mounted on the top plate 308; The separation assembly 401 includes a bearing 4012 and a drive shaft 4013. The bearing 4012 is mounted on the top plate 308, and the drive shaft 4013 is mounted on the bearing 4012. The lower end of the drive shaft 4013 is connected to the transmission shaft 4015 via a flexible coupling 4014. It should be noted that the flexible coupling 4014 can absorb the vibration of the vibration assembly and reduce the wear between the drive shaft 4013, the separation drive motor 4011, and the bearing 4012. Multiple push plates 4016 are arranged in a ring array on the side wall of the transmission shaft 4015, all located above the first screen 403, and each push plate 4016 is equipped with a set of vibration assemblies for breaking up the aggregated particles. The separation assembly 401 also includes a separation drive motor 4011 disposed on the top plate 308, and the separation drive motor 4011 is connected to the drive shaft 4013 for transmission. Each set of vibration components includes a protective cover 4017, a primary vibration motor 4018, and a vibration fork 4019. The protective cover 4017 is mounted on the push plate 4016 and can isolate the primary vibration motor 4018 from the original particles. The primary vibration motor 4018 is located inside the protective cover 4017, and the vibration fork 4019 is connected to the working end of the primary vibration motor 4018. By setting the vibration fork 4019, the vibration frequency can be increased and the separation effect can be improved.

[0032] Specifically, the drive shaft 4013 is driven by the separation drive motor 4011 to rotate on the bearing 4012, and then the transmission shaft 4015 is driven to rotate by the flexible coupling 4014. The push plate 4016 pushes the primary particles to flow, thereby achieving the separation of primary and secondary particles. The vibration source is emitted by the first vibration motor 4018 and transmitted to the vibrating steel fork 4019, which in turn transmits the vibration to the primary particles to separate the aggregated primary particles. This prevents the small particles of neodymium iron boron rare earth alloy from agglomerating and forming agglomerated particles that cannot be properly screened by the first screen 403.

[0033] Furthermore, a weighing assembly 407 is provided inside the mixing tank 302. The weighing assembly 407 includes a weighing sensor 4071 and a weighing disk 4072. The weighing sensor 4071 is installed on the bottom wall inside the mixing tank 302, and the weighing disk 4072 is located above the weighing sensor 4071. Furthermore, the vertical frame 200 is equipped with a weight display that is used in conjunction with the weighing sensor 4071. It can display the weight measured by the weighing sensor 4071 and is connected to the weighing sensor 4071 via signal. It is an existing mature product, so its principle and structure will not be described in detail.

[0034] Specifically, the weight of each primary particle that finally falls into the mixing tank 302 can be measured by the weighing sensor 4071 and the weighing plate 4072. In other words, the loss of the original particles after separation by the separation mechanism 400 can be determined, and the original particles can be added back to the specified weight.

[0035] Furthermore, a tilting mechanism 700 is installed on the vertical frame 200 for driving the mixing tank assembly 300 to tilt. The tilting mechanism 700 includes two rotating shafts 703 symmetrically arranged on the side wall of the separation tank 301, and the two rotating shafts 703 are respectively rotatably mounted on the corresponding vertical frame 200; A tilting drive motor 702 is mounted on the vertical frame 200 via a second connecting seat 701. The output end of the tilting drive motor 702 is connected to any one of the rotating shafts 703.

[0036] Specifically, the rotating shaft 703 drives the mixing tank assembly 300 to rotate and tilt as a whole by driving the rotating drive motor 702. On the one hand, it allows the secondary particles on the first screen 403 to slide off the first screen 403 and into the inside of the crushing component 406. On the other hand, it allows the primary particle mixture after stirring and mixing inside the mixing tank 302 to be poured out from the mixing tank 302.

[0037] Furthermore, a No. 1 connecting seat 304 is provided on the outer wall of the separating tank 301, and a No. 1 power cylinder 305 is installed on the No. 1 connecting seat 304. The working end of the No. 1 power cylinder 305 is connected to the mixing tank 302 through the fixing bracket 306. Furthermore, a sealing door 303 is provided on the side wall of the mixing tank 302, which allows the material to be poured out by opening the sealing door 303 and tilting the mixing tank assembly 300 as a whole. It should be noted that a lock is provided between the sealing door 303 and the mixing tank 302, which can lock the sealing door 303 during use.

[0038] Specifically, by driving the mixing tank 302 and the separating tank 301 through the first power cylinder 305, the second screen 409 can be removed and the tertiary particles on it can be cleaned to avoid blockage.

[0039] Furthermore, a stirring and mixing assembly 500 is also installed on the mixing tank 302. The stirring and mixing assembly 500 includes a stirring shaft 502 and stirring blades 503. The stirring blades 503 are disposed on the stirring shaft 502 and located above the weighing plate 4072. The stirring shaft 502 is rotatably connected to the separation tank 301, and a stirring and mixing drive motor 501 is disposed on the outer wall of the mixing tank 302. The output end of the stirring and mixing drive motor 501 is connected to the bottom of the stirring shaft 502. The stirring and mixing drive motor 501 drives the stirring shaft 502 to rotate, and the stirring shaft 502 drives the stirring blades 503 to rotate, so that all the primary particles falling into the mixing tank 302 are uniform particles, and then stirring and mixing are performed.

[0040] The method for using a mixing and stirring device for precisely proportioning neodymium iron boron rare earth alloy components includes the following steps. S1: The first type of primary particles for preparing NdFeB are added to the separation tank 301 through the feeding hopper 307 and fall onto the No. 1 screen 403 with an 8μm aperture. Then, the separation drive motor 4011 is started, which drives the push plate 4016 to push the primary particles to move. At the same time, the vibrating steel fork 4019 is driven to vibrate and disperse the particles. The primary particles with a particle size of less than 8μm fall into the No. 1 collection hopper 4081, and the secondary particles with a particle size of more than 8μm remain on the No. 1 screen 403. S2: Start the suction fan 4084 to send the primary particles in the collection hopper into the mixing tank 302 through the conveying pipe 4082; S3: Start the second power cylinder 4052 to raise the baffle plate 402, then start the tilting drive motor 702 to tilt the mixing tank, and the secondary particles fall into the crushing chamber 4068. Then, start the crushing drive motor 4061 to crush the secondary particles into primary particles, and after being screened by the second screen 409, they enter the mixing tank 302. The trace amount of tertiary particles that still do not reach the particle size of less than 8μm are intercepted on the second screen 409. S4: Monitor the weight of the primary particles inside the mixing tank 302 using the weighing sensor 4071, and replenish the primary particles to the target weight according to the preset ratio; S5: Repeat steps S1-S4 to obtain the remaining types of neodymium iron boron primary particles that meet the particle size standard. After all the primary particles are put into the mixing tank 302, start the stirring and mixing drive motor 501 to stir. After the mixing is completed, open the sealing door 303 and tilt the mixing tank through the flipping mechanism to pour out the mixed primary particles. S6: Separate the separation tank 301 and the mixing tank 302 by using the first power cylinder 305, remove the second screen 409 and collect the tertiary particles.

[0041] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A neodymium-iron-boron rare earth alloy component precise proportioning mixing and stirring device, comprising a base (100), a vertical frame (200) and a stirring tank body assembly (300), the vertical frame (200) is installed on the base (100), characterized in that, The mixing tank assembly (300) includes a separation tank (301) and a mixing tank (302) disposed at the lower end of the separation tank (301). A separation mechanism (400) is installed on the separation tank (301). The separation mechanism (400) includes a first screen (403), a crushing component (406), a material suction component (408), and a second screen (409). The first screen (403) is disposed inside the separation tank (301), and a separation component (401) is disposed above the first screen (403). The second screen (409) is located directly below the first screen (403), and the crushing component (406) is installed between the first screen (403) and the second screen (409); The suction assembly (408) is installed between the separation tank (301) and the mixing tank (302).

2. The neodymium-iron-boron rare earth alloy component precise proportioning mixing and stirring device according to claim 1, characterized in that, The material suction assembly (408) includes a first collection hopper (4081) and a conveying pipe (4082). The first collection hopper (4081) is disposed on the bottom surface of the first screen (403). One end of the conveying pipe (4082) is connected to the first collection hopper (4081) through the pipe, and the other end of the conveying pipe (4082) is connected to the mixing tank (302). The suction assembly (408) also includes a suction fan (4084) mounted on the outer wall of the separator (301) via a mounting bracket (4083), the port of which is connected to the conveying pipe (4082); The conveying pipe (4082) is also provided with a guide plate (4085) on the top outer wall of the section inside the separator (301).

3. The neodymium-iron-boron rare earth alloy component precise proportioning mixing and stirring device according to claim 2, characterized in that, The crushing assembly (406) includes a second collection hopper (4067) and a crushing chamber (4068) disposed on the inner wall of the separation tank (301). The second collection hopper (4067) is disposed directly below the first collection hopper (4081), and the crushing chamber (4068) is installed through and directly below the second collection hopper (4067). The crushing chamber (4068) is rotatably connected to two driven shafts (4063) and a drive shaft (4062) disposed between the two driven shafts (4063). The end of the drive shaft (4062) is provided with a drive gear (4065), and the end of each driven shaft (4063) is provided with a driven gear (4066) that meshes with the drive gear (4065). Both the drive shaft (4062) and the driven shaft (4063) are equipped with crushing roller shafts (4064), which are located inside the crushing chamber (4068); The outer wall of the crushing chamber (4068) is also provided with a crushing drive motor (4061), and the output end of the crushing drive motor (4061) is connected to the end of the drive shaft (4062) away from the drive gear (4065). Furthermore, the second screen (409) can be detachably installed between the separation tank (301) and the mixing tank (302). A mounting base (410) is provided at the center of the second screen (409), and a second vibration motor (411) is provided on the bottom surface of the mounting base (410).

4. The neodymium-iron-boron rare earth alloy ingredient precise proportioning mixing and stirring device according to claim 1, characterized in that, A baffle plate (402) is movably provided on the outer side of the No. 1 screen (403) and located inside the separation tank (301). Several guide grooves (4021) arranged in a ring array are provided on the side wall of the baffle plate (402), and guide blocks (404) with the same number of guide grooves (4021) and corresponding to each other are also provided on the inner wall of the separation tank (301). The separation mechanism (400) further includes a lifting assembly (405) for driving the baffle plate (402) to move up and down. The lifting assembly (405) includes a baffle shell (4051) and a second power cylinder (4052). The second power cylinder (4052) is installed inside the baffle shell (4051). The baffle shell (4051) is fixedly connected to the inner wall of the separation tank (301), and the output end of the second power cylinder (4052) is fixedly connected to the baffle plate (402).

5. The mixing and stirring equipment for precisely proportioning NdFeB rare earth alloy components according to claim 1, characterized in that, The separation tank (301) includes a top plate (308), and the separation assembly (401) is mounted on the top plate (308); The separation assembly (401) includes a bearing (4012) and a drive shaft (4013). The bearing (4012) is mounted on the top plate (308), and the drive shaft (4013) is mounted on the bearing (4012). The lower end of the drive shaft (4013) is connected to a transmission shaft (4015) via a flexible coupling (4014). Multiple push plates (4016) are arranged in a ring array on the side wall of the transmission shaft (4015), all located above the No. 1 screen (403), and each push plate (4016) is equipped with a set of vibration components. The separation assembly (401) also includes a separation drive motor (4011) disposed on the top plate (308), and the separation drive motor (4011) is connected to the drive shaft (4013) for transmission. Each vibration assembly includes a protective cover (4017), a first vibration motor (4018), and a vibration fork (4019). The protective cover (4017) is mounted on a push plate (4016), the first vibration motor (4018) is mounted inside the protective cover (4017), and the vibration fork (4019) is connected to the working end of the first vibration motor (4018).

6. The mixing and stirring equipment for precisely proportioning NdFeB rare earth alloy components according to claim 1, characterized in that, The mixing tank (302) is equipped with a weighing assembly (407), which includes a weighing sensor (4071) and a weighing disk (4072). The weighing sensor (4071) is installed on the bottom wall of the mixing tank (302), and the weighing disk (4072) is located above the weighing sensor (4071). Furthermore, the vertical frame (200) is equipped with a weight display that is used in conjunction with the weighing sensor (4071).

7. The mixing and stirring equipment for precisely proportioning NdFeB rare earth alloy components according to claim 1, characterized in that, The vertical frame (200) is equipped with a tilting mechanism (700) for driving the mixing tank assembly (300) to tilt. The flipping mechanism (700) includes two rotating shafts (703) symmetrically arranged on the side wall of the separation tank (301), and the two rotating shafts (703) are respectively rotatably mounted on the corresponding vertical frame (200); A tilting drive motor (702) is mounted on the vertical frame (200) via a second connecting seat (701), and the output end of the tilting drive motor (702) is connected to any one of the rotating shafts (703).

8. The mixing and stirring equipment for precisely proportioning NdFeB rare earth alloy components according to claim 1, characterized in that, A No. 1 connecting seat (304) is also provided on the outer side wall of the separation tank (301). A No. 1 power cylinder (305) is installed on the No. 1 connecting seat (304). The working end of the No. 1 power cylinder (305) is connected to the mixing tank (302) through a fixing frame (306). Furthermore, a sealing door (303) is provided on the side wall of the mixing tank (302).

9. The mixing and stirring equipment for precisely proportioning NdFeB rare earth alloy components according to claim 8, characterized in that, The mixing tank (302) is also equipped with a stirring and mixing assembly (500), which includes a stirring shaft (502) and stirring blades (503). The stirring blades (503) are arranged on the stirring shaft (502) and located above the weighing plate (4072). The stirring shaft (502) is rotatably connected to the separation tank (301), and a stirring and mixing drive motor (501) is provided on the outer wall of the mixing tank (302). The output end of the stirring and mixing drive motor (501) is connected to the bottom of the stirring shaft (502) for transmission.

10. The method of using a mixing and stirring device for precisely proportioning neodymium iron boron rare earth alloy components, characterized in that... The mixing and stirring equipment for precisely proportioning the NdFeB rare earth alloy components according to any one of claims 1-9 includes the following steps: S1: One type of primary particles for preparing NdFeB is added to the separator (301) through the feeding hopper (307) and falls onto the No. 1 screen (403) with an aperture of 8μm. Then, the separation drive motor (4011) is started, which drives the push plate (4016) to push the primary particles to move. At the same time, the vibrating steel fork (4019) is driven to vibrate and disperse the particles. The primary particles with a particle size of less than 8μm fall into the No. 1 collection hopper (4081), and the secondary particles with a particle size of more than 8μm remain on the No. 1 screen (403). S2: Start the suction fan (4084) to send the primary particles in the collection hopper into the mixing tank (302) through the conveying pipe (4082); S3: Start the second power cylinder (4052) to raise the baffle plate (402), then start the tilting drive motor (702) to tilt the mixing tank, and the secondary particles fall into the crushing chamber (4068). Then, start the crushing drive motor (4061) to crush the secondary particles into primary particles, and after being screened by the second screen (409), they enter the mixing tank (302). The tertiary particles with a particle size greater than 8μm are intercepted on the second screen (409). S4: Monitor the weight of the primary particles obtained inside the mixing tank (302) by the weighing sensor (4071), and replenish the primary particles to the target weight according to the preset ratio; S5: Repeat steps S1-S4 to obtain the remaining types of neodymium iron boron primary particles that meet the particle size standard. After all types of primary particles enter the mixing tank (302), start the stirring and mixing drive motor (501) to stir. After the mixing is completed, open the sealing door (303) and pour out the mixed primary particles by tilting the stirring tank through the flipping mechanism. S6: Separate the separation tank (301) and the mixing tank (302) by using the first power cylinder (305), remove the second screen (409) and collect the third-stage particles.

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