Metallurgy powder preparation equipment and method

Abstract

The invention relates to the technical field of metallurgical powder preparation, and discloses metallurgical powder preparation equipment and method.The metallurgical powder preparation equipment comprises four stand columns, a mixing tank is installed at the upper ends of the four stand columns, the lower end of the mixing tank communicates with four discharging circulators, and the other ends of the four discharging circulators communicate with the upper end of the outer wall of the mixing tank correspondingly; a material collector is installed among the four stand columns, the material collector is located below the mixing tank, the two sides of the upper end of the rear wall of the mixing tank are communicated with two feeding hoppers, a mixer is placed above the mixing tank, and a rotation limiting stopper is installed between the mixer and the mixing tank; the central mixing shaft, the operation shaft and the stirring shafts are driven by the mixing motor to form a planetary stirring system, and the plurality of stirring shafts revolve along with the operation ring while rotating around own axes, so that strong shearing, diffusion and convection effects can be generated on powder in the mixing tank.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metallurgical powder preparation, in particular to a metallurgical powder preparation device and method. BACKGROUND

[0002] Metallurgical powder is an important basic raw material for modern manufacturing industry, and its quality directly affects the performance of subsequent pressing and sintering products. In the preparation process of metallurgical powder, it is crucial to mix various raw material powders sufficiently and uniformly.

[0003] Traditional powder mixing equipment, such as V-shaped mixer, double-cone mixer or simple paddle mixer, has limited mixing uniformity. For powders with large differences in specific gravity and particle size, the traditional mixer is prone to segregation, and it is difficult to meet the high standard of uniformity. Secondly, the equipment has mixing dead angles, and the inner wall is prone to adhere to the material, which not only leads to a decrease in mixing uniformity, but also causes waste of raw materials and cross contamination between batches. Furthermore, the traditional mixing equipment usually separates mixing and discharging. During the discharging process, the mixed uniform material may be separated again due to the flow characteristics of the powder, affecting the quality stability of the final product. In addition, it is difficult to conveniently and quickly sample during the mixing process to monitor the mixing progress in real time, often requiring shutdown operation, which affects production efficiency. In view of the above problems, the present application is developed. SUMMARY

[0004] The present application aims to solve the above problems by designing a metallurgical powder preparation device and method, which solves the limitations of existing traditional powder mixing equipment, such as limited mixing uniformity, especially for powders with large differences in specific gravity and particle size, which are prone to segregation. The equipment has mixing dead angles, and the inner wall is prone to adhere to the material, which leads to a decrease in uniformity, waste of raw materials and cross contamination. Mixing and discharging are separated, and secondary separation is prone to occur during the discharging process, affecting the quality stability of the product. In addition, it is difficult to monitor in real time, and often requires shutdown operation, which affects the efficiency.

[0005] To achieve the above purpose, the technical solution of the present application is as follows: a metallurgical powder preparation device, comprising four vertical columns, a mixing tank is installed on the upper end of the four vertical columns, four discharge circulators are connected to the lower end of the mixing tank, the other end of the four discharge circulators is respectively connected to the outer wall of the mixing tank, a collector is installed between the four vertical columns, the collector is located below the mixing tank, two feed hoppers are connected to the upper end of the rear wall of the mixing tank on both sides, a mixer is placed above the mixing tank, and a rotation limiter is installed between the mixer and the mixing tank.

[0006] The mixer comprises a cover body above the mixing tank, a mixing motor is installed at the center of the upper end of the cover body, the driving end of the mixing motor penetrates through the center of the cover body through a bearing, a mixing shaft is installed at the driving end of the mixing motor through a shaft coupling, a driving gear is installed at the top end of the mixing shaft, an annular groove is processed on the outer wall of the inner wall of the cover body, an operating ring is movably embedded in the annular groove, a linkage stirrer is installed between the operating ring and the driving gear, a scraping frame is connected to the lower wall surface of the operating ring, and the outer wall of the scraping frame is in sliding fit with the inner wall of the mixing tank.

[0007] Preferably, the linkage stirrer comprises four operating shafts, the four operating shafts are all installed on the inner wall of the cover body through bearing seats, and are uniformly distributed on the outer side of the mixing shaft, four driven gears are fixedly installed on the four operating shafts, the four driven gears are all in meshing engagement with the driving gear, four stirring shafts are connected to the bottom ends of the four operating shafts, an inner ring gear is installed on the inner wall of the operating ring, and the inner ring gear is in meshing engagement with the other ends of the four driven gears.

[0008] Preferably, the four discharge circulators all comprise a discharge connector, one end of the discharge connector is in communication with the lower wall surface of the mixing tank, the other end of the discharge connector is connected with an operating pipe, a discharge port is formed in the lower wall surface of the operating pipe, a discharge controller is movably sleeved on the outer side of the operating pipe and corresponds to the discharge port, a spiral conveyor is connected to the other end of the operating pipe, and one side of the top end of the spiral conveyor is in communication with the upper end of the side wall of the mixing tank.

[0009] Preferably, the discharge controller comprises an annular sleeve, the annular sleeve is movably sleeved on the outer side of the operating pipe and corresponds to the discharge port, an operating plate is installed on one side of the lower end of the annular sleeve, a discharge air cylinder is connected to one end of the operating plate, a fixed plate is installed at the other end of the discharge air cylinder, and the fixed plate is connected with the other side of the outer wall of the lower end of the operating pipe.

[0010] Preferably, the rotation limiter comprises a fixed ring, the fixed ring is fixedly installed on the upper end of the outer wall of the mixing tank, four limiting pieces are uniformly distributed on the outer side of the fixed ring, an installation ring is installed on the outer wall of the cover body, four connecting pieces are uniformly distributed on the outer wall of the installation ring, four limiting rods are fixedly installed on the lower ends of the four connecting pieces, four limiting holes are formed in the centers of the four limiting pieces, and the bottom ends of the four limiting rods are movably penetrated into the four limiting holes respectively.

[0011] Preferably, a sampling module is mounted on the outer wall of the screw conveyor, the sampling module comprises a sampling hole, the sampling hole is arranged at the center of the outer wall of the screw conveyor, a supporting ring is fixedly mounted on the outer wall of the screw conveyor, the supporting ring is located below the sampling hole, a sampling sealing ring is movably sleeved on the outer side of the screw conveyor, the bottom end of the sampling sealing ring is in contact with the upper wall of the supporting ring and located outside the sampling hole.

[0012] Preferably, the collector comprises four supporting frames, the four supporting frames are fixedly connected with the four column side walls respectively, and a conical collecting hopper is mounted on the upper end of each supporting frame and located below the discharge controller.

[0013] Preferably, the four stirring shafts are arranged in opposite directions to the mixing shaft.

[0014] A metallurgical powder preparation method, comprising the following steps:

[0015] Step S1: device setting and fixing: moving the mixing device to a designated position, supporting by four columns, and connecting a control system;

[0016] Step S2: preparation of the discharge circulator: closing the discharge controllers of the four discharge circulators at the lower end of the mixing tank to make them in a circulating state;

[0017] Step S3: installation of the mixer: placing the mixer above the mixing tank by using hoisting equipment, ensuring that the four limiting rods are embedded in the limiting holes, and fixing the equipment by structures such as fixing rings and limiting sheets to prevent vibration or deviation;

[0018] Step S4: starting the mixing motor: driving the mixing motor to work, driving the mixing shaft and the four stirring shafts to rotate at high speed to stir and mix the powder; at the same time, driving the gear and the driven gear to rotate the scraping frame to scrape the powder adhered to the inner wall of the mixing tank;

[0019] Step S5: feeding: injecting the metallurgical powder into the mixing tank through the two feeding hoppers;

[0020] Step S6: circulating mixing: the discharge circulator works to send the powder into the screw conveyor through the discharge joint and the operation pipe, and then the powder is re-sent into the mixing tank to realize the circulating mixing of the powder;

[0021] Step S7: sampling inspection: during the mixing process, the sampling sealing ring is lifted, the powder is sampled through the sampling hole on the screw conveyor, and the mixing effect is checked; after sampling, the sampling sealing ring is loosened to automatically seal the sampling hole;

[0022] Step S8: discharge operation: after the mixing is completed, the discharge cylinder is driven to move the annular sleeve to expose the discharge port, and the discharge is started;

[0023] Step S9: Powder collection: The discharged powder is collected by the conical collecting hopper on the four supporting frames and is centrally transported.

[0024] The metallurgical powder preparation equipment and method prepared by the technical scheme of the present application comprises a planetary stirring system formed by a mixing motor driving a central mixing shaft, an operating shaft and a stirring shaft. The multiple stirring shafts rotate around their own axes and revolve with the operating ring. The operating ring can produce strong shearing, diffusion and convection effects on the powder in the mixing tank, ensuring that the powder of different weights and sizes can reach a high mixing uniformity in a short time. There is no stirring dead angle in the tank. The scraper frame connected to the lower wall of the operating ring moves with the operating ring. The outer wall of the scraper frame is always in sliding fit with the inner wall of the mixing tank, so that the powder adhering to the inner wall of the tank can be scraped in real time. The utilization rate of the material is improved, the waste is reduced, the residual pollution between different batches of materials is effectively prevented, the product purity is ensured, and the difficulty of cleaning and maintenance is reduced.

[0025] The four discharge circulators are arranged to lift the powder at the bottom of the mixing tank to the top of the tank by the screw conveyor and backfill into the tank, so that the mixing process and the circulation process can be carried out at the same time, dynamic mixing is realized, the agglomerates can be further dispersed, and the homogenization is promoted. When the material is finally discharged, the material also passes through the system, effectively avoiding the secondary segregation caused by the powder rest angle in the traditional direct discharge method, and ensuring the quality stability of the whole process from mixing to discharging.

[0026] The design of the rotation limiter provides a stable and reliable rotating support structure for the cover and the internal mixer through the cooperation of the limiting rod and the limiting hole, prevents the vibration or deviation of the equipment under strong mixing force, and ensures the stability and safety of long-term operation of the equipment.

[0027] Meanwhile, the sampling module is arranged on the outer wall of the screw conveyor. The operator can sample through the sampling hole without stopping during the mixing or circulation process, which greatly facilitates real-time monitoring of the mixing progress and quality, and realizes precise control of the production process.

[0028] The position of the annular sleeve can be controlled by the discharge cylinder to accurately open or close the discharge port, realizing the automation and precise control of the discharging process and facilitating the connection with the next process. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a front perspective structural schematic view of the metallurgical powder preparation equipment and method.

[0030] Figure 2 It is a rear perspective structural schematic view of the metallurgical powder preparation equipment and method.

[0031] Figure 3 Figure 1 is a front view of the expanded state of the metallurgical powder preparation device and method of the present application.

[0032] Figure 4 Figure 2 is a bottom view of the expanded state of the metallurgical powder preparation device and method of the present application.

[0033] Figure 5 Figure 3 is a front view of the cross-section of the expanded state of the metallurgical powder preparation device and method of the present application.

[0034] Figure 6 Figure 4 is a side view of the expanded state of the metallurgical powder preparation device and method of the present application. Figure 5 Figure 5 is an enlarged view of the "A" portion of the expanded state of the metallurgical powder preparation device and method of the present application.

[0035] Figure 7 Figure 6 is an enlarged view of the "B" portion of the expanded state of the metallurgical powder preparation device and method of the present application. Figure 5 Figure 7 is an enlarged view of the "C" portion of the expanded state of the metallurgical powder preparation device and method of the present application.

[0036] Figure 8 Figure 8 is a front view of the cross-section of the expanded state of the metallurgical powder preparation device and method of the present application. Figure 5 Figure 9 is an enlarged view of the "D" portion of the expanded state of the metallurgical powder preparation device and method of the present application.

[0037] Figure 1 is a front view of the expanded state of the metallurgical powder preparation device and method of the present application. DETAILED DESCRIPTION

[0038] The present application will be described in detail below with reference to the drawings, as shown in Figure 1, a metallurgical powder preparation device and method. Figures 1-8

[0039] ​Embodiment: a metallurgical powder preparation equipment, including four columns 1, four columns 1 upper end is equipped with mixing tank 2, mixing tank 2 lower end is communicated with four discharge circulators, four discharge circulators other end is communicated with mixing tank 2 outer wall upper end respectively, four columns 1 between installation is equipped with collector, collector is located mixing tank 2 below, mixing tank 2 rear wall upper end two sides are communicated with two feed hoppers 3, mixing tank 2 above is placed with mixer, mixer and mixing tank 2 between installation is equipped with rotation limiter;

[0040] The mixer comprises a cover body 4 located above the mixing tank 2, a mixing motor 5 installed at the center of the upper end of the cover body 4, the driving end of the mixing motor 5 penetrating through the center of the cover body 4 through a bearing, a mixing shaft 6 installed at the driving end of the mixing motor 5 through a shaft coupling, a driving gear 7 installed at the top end of the mixing shaft 6, an annular groove 8 processed on the outer side of the inner wall of the cover body 4, an operating ring 9 movably embedded in the annular groove 8, a linkage stirrer installed between the operating ring 9 and the driving gear 7, a scraping frame 10 connected to the lower wall surface of the operating ring 9, and the outer wall of the scraping frame 10 is in sliding fit with the inner wall of the mixing tank 2.

[0041] When the metallurgical powder is mixed and prepared, first of all, the staff moves the device to the designated position, supports the device through the four columns 1, and connects the device with the designated control system, then closes the discharge controller in the four discharge circulating devices at the lower end of the mixing tank 2, so that the four discharge circulating devices are in a circulating state, and places the mixer above the mixing tank 2 through the hoisting equipment, then rotates the mixer through the rotation limiter, which prevents the equipment from vibrating or deviating under strong mixing force, and ensures the stability and safety of long-term operation of the equipment, then drives the mixing motor 5 at the upper end of the cover body 4 to work, drives the mixing shaft 6 to rotate at high speed through the mixing motor 5, stirs and mixes the powder in the mixing tank 2 through the mixing shaft 6, at the same time, the drive gear 7 at the top of the mixing shaft 6 rotates and cooperates with the set linkage stirrer, slowly rotates the drive operation ring 9 in the annular groove 8, at the same time, the scraping frame 10 at the lower end of the operation ring 9 rotates, and the scraping frame 10 is attached to the inner wall of the mixing tank 2 to scrape the powder adhered to the inner wall of the mixing tank 2, so as to ensure the full mixing effect of the powder, then pours the designated metallurgical powder into the mixing tank 2 through the two feed hoppers 3, fully stirs and mixes the powder through the mixer, at the same time, lifts and conveys the metallurgical powder at the bottom of the mixing tank 2 through the four discharge circulating devices, and re-conveys it to the upper part of the mixing tank 2, so that it is subjected to secondary mixing treatment, so as to ensure the overall mixing effect of the metallurgical powder, and in the mixing process, the powder conveyed by the discharge circulating device can be quickly sampled through the sampling module, so as to understand the overall mixing effect of the internal powder, when the mixing is completed, the discharge controller is opened, the powder in the discharge circulating device is discharged, and finally the powder is collected through the collector, and finally discharged through the bottom of the collector, so as to realize the quick discharge operation of the powder.

[0042] In the specific implementation process, the linkage stirrer includes four operation shafts 11, the four operation shafts 11 are all installed at the inner wall of the cover body 4 through bearing seats, and are uniformly distributed outside the mixing shaft 6, four driven gears 12 are fixedly installed on the four operation shafts 11, the four driven gears 12 are all engaged with the drive gear 7, four stirring shafts 13 are connected to the bottom ends of the four operation shafts 11, an inner ring gear 14 is installed at the inner wall of the operation ring 9, and the inner ring gear 14 is engaged with the other end of the four driven gears 12.

[0043] In the specific implementation process, the linkage stirrer includes four operation shafts 11, the four operation shafts 11 are all installed at the inner wall of the cover body 4 through bearing seats, and are uniformly distributed outside the mixing shaft 6, four driven gears 12 are fixedly installed on the four operation shafts 11, the four driven gears 12 are all engaged with the drive gear 7, four stirring shafts 13 are connected to the bottom ends of the four operation shafts 11, an inner ring gear 14 is installed at the inner wall of the operation ring 9, and the inner ring gear 14 is engaged with the other end of the four driven gears 12.

[0044] In the specific implementation process, the four discharge circulators each include a discharge connector 15, one end of which is in communication with the lower wall of the mixing tank 2, and the other end of which is connected with an operating pipe 16, the lower wall of which is provided with a discharge port 17, the outer side of the operating pipe 16 is movably sleeved with a discharge controller, the other end of the operating pipe 16 is connected with a screw conveyor 18, and the top end of the screw conveyor 18 is in communication with the upper end of the side wall of the mixing tank 2.

[0045] When the powder is stirred, the powder enters the operating pipe 16 through the discharge connector 15, then enters the screw conveyor 18 through the inclined angle of the operating pipe 16, and finally is re-conveyed into the mixing tank 2 by the screw conveyor 18, so that the powder is circularly conveyed, and when discharge is needed, the discharge port 17 at the lower end of the operating pipe 16 is opened by opening the discharge controller, and the powder is discharged through the discharge port 17.

[0046] In the specific implementation process, the discharge controller includes an annular sleeve 19, which is movably sleeved on the outer side of the operating pipe 16 and corresponds to the discharge port 17, one side of the lower end of the annular sleeve 19 is provided with an operating plate 20, one end of the operating plate 20 is connected with a discharge air cylinder 21, the other end of the discharge air cylinder 21 is provided with a fixed plate 22, and the fixed plate 22 is connected with the other side of the outer wall of the lower end of the operating pipe 16.

[0047] When the powder needs to be discharged, the discharge air cylinder 21 between the operating plate 20 and the fixed plate 22 is driven by the worker to work, the distance between the operating plate 20 and the fixed plate 22 is changed by the discharge air cylinder 21, and then the annular sleeve 19 is moved to one side on the upper end of the operating pipe 16 until the discharge port 17 is completely exposed, so that the powder can be discharged through the discharge port 17.

[0048] In the specific implementation process, the rotating limiter includes a fixed ring 23 fixedly installed on the outer wall of the upper end of the mixing tank 2, four limiting pieces 24 uniformly distributed on the outer side of the fixed ring 23, an installation ring 25 installed on the outer wall of the cover body 4, four connecting pieces 26 uniformly distributed on the outer wall of the installation ring 25, four limiting rods 27 fixedly installed at the lower ends of the four connecting pieces 26, four limiting holes 28 formed at the centers of the four limiting pieces 24, and the bottom ends of the four limiting rods 27 movably penetrate into the four limiting holes 28, respectively.

[0049] When the mixer is installed, the mixer is placed on the upper end of the mixing tank 2 by hoisting equipment, and then the four limiting rods 27 are embedded in the four limiting holes 28, and under the connection of the fixed ring 23 and the four limiting pieces 24 and the installation ring 25 and the four connecting pieces 26, the rotating limiting purpose of the cover body 4 and the mixing tank 2 can be achieved, and the stability and safety of long-term operation of the equipment are ensured.

[0050] In the specific implementation process, a sampling module is installed on the outer wall of the screw conveyor 18. The sampling module includes a sampling hole 29, which is opened at the center of the outer wall of the screw conveyor 18. A support ring 30 is fixedly installed on the outer wall of the screw conveyor 18, which is located below the sampling hole 29. A sampling closing ring 31 is movably fitted on the outer side of the screw conveyor 18. The bottom end of the sampling closing ring 31 contacts the upper wall surface of the support ring 30 and is located outside the sampling hole 29.

[0051] When sampling and testing the powder during the mixing process, the sampling closing ring 31 can be lifted to expose the sampling hole 29 on the outer wall of the screw conveyor 18. With the conveying action of the screw conveyor 18, the powder can be sampled through the sampling hole 29. After sampling is completed, the sampling closing ring 31 is released. Under its own gravity, the sampling closing ring 31 can fall and contact the support ring 30, thus sealing the sampling hole 29.

[0052] In the specific implementation process, the collector includes four support frames 32. The outer sides of the four support frames 32 are fixedly connected to the side walls of the four columns 1 respectively. Conical hoppers 33 are installed on the upper ends of the four support frames 32. The conical hoppers 33 are located below the discharge controller.

[0053] When discharging the powder, the discharged powder is collected by the conical collection hoppers 33 at the top of the four support frames 32, and finally the powder is centrally conveyed through the conical collection hoppers 33 to ensure the overall discharge effect of the powder.

[0054] In the specific implementation process, the four stirring shafts 13 are installed in opposite directions to the mixing shaft 6. Since the number of teeth of the four driven gears 12 is greater than that of the driving gear 7, the overall rotation speed of the four stirring shafts 13 is less than that of the mixing shaft 6. Through the difference in rotation speed, the powder can be fully stirred.

[0055] A method for preparing metallurgical powder, comprising the following steps;

[0056] Step S1: Device setup and fixation: Move the mixing device to the designated position, support it with four columns, and connect it to the control system;

[0057] Step S2: Discharge Circulator Preparation: Turn off the discharge controllers of the four discharge circulators at the bottom of the mixing tank to put them into circulation mode;

[0058] Step S3: Mixer installation: Use hoisting equipment to place the mixer above the mixing tank, ensuring that the four limit rods are embedded in the limit holes, and fix the equipment with structures such as fixing rings and limit plates to prevent vibration or displacement;

[0059] Step S4: Start mixing motor: drive the mixing motor to work, drive the mixing shaft and four stirring shafts to rotate at high speed, and stir and mix the powder; at the same time, drive the gear and the driven gear to drive the scraping frame to rotate, and scrape the powder adhered to the inner wall of the mixing tank;

[0060] Step S5: Feeding: inject metallurgical powder into the mixing tank through the two feeding hoppers;

[0061] Step S6: Circulating mixing: the discharge circulator works, the powder is sent into the screw conveyor through the discharge joint and the operation pipe, and then is re-input into the mixing tank, so that the powder is mixed in a circulating manner;

[0062] Step S7: Sampling inspection: during the mixing process, the sampling sealing ring is lifted, the powder is sampled through the sampling hole on the screw conveyor, and the mixing effect is checked; after sampling, the sampling sealing ring is loosened, and the sampling hole is automatically sealed.

[0063] Step S8: Discharge operation: after the mixing is completed, the discharge cylinder is driven, the annular sleeve is moved to expose the discharge port, and the discharge is started.

[0064] Step S9: Powder collection: the discharged powder is collected through the conical collecting hoppers on the four supporting frames, and is centrally conveyed.

[0065] The above technical solution only reflects the preferred technical solution of the technical solution of the present application, and some changes made by the person skilled in the art to some parts thereof also reflect the principle of the present application and are within the protection scope of the present application.

Claims

1. A metallurgical powder preparation device, comprising four columns (1), characterized in that, A mixing tank (2) is installed on the upper end of the four columns (1). The lower end of the mixing tank (2) is connected to four discharge circulators. The other end of the four discharge circulators is connected to the upper end of the outer wall of the mixing tank (2). A collector is installed between the four columns (1). The collector is located below the mixing tank (2). Two feed hoppers (3) are connected to the upper sides of the rear wall of the mixing tank (2). A mixer is placed on top of the mixing tank (2). A rotation limiter is installed between the mixer and the mixing tank (2). The mixer includes a cover (4) located above the mixing tank (2). A mixing motor (5) is installed at the center of the upper end of the cover (4). The driving end of the mixing motor (5) passes through the center of the cover (4) via a bearing. A mixing shaft (6) is installed at the driving end of the mixing motor (5) via a coupling. A driving gear (7) is installed at the top of the mixing shaft (6). An annular groove (8) is machined on the outer side of the inner wall of the cover (4). An operating ring (9) is movably embedded in the annular groove (8). A linkage stirrer is installed between the operating ring (9) and the driving gear (7). A scraper (10) is connected to the lower wall of the operating ring (9). The outer wall of the scraper (10) slides against the inner wall of the mixing tank (2).

2. The metallurgical powder preparation equipment according to claim 1, characterized in that, The linkage agitator includes four operating shafts (11). The four operating shafts (11) are all installed on the inner wall of the cover (4) through bearing seats and are evenly distributed on the outside of the mixing shaft (6). Four driven gears (12) are fixedly installed on the four operating shafts (11). The four driven gears (12) mesh with the driving gear (7). The bottom ends of the four operating shafts (11) are connected to four stirring shafts (13). An internal gear ring (14) is installed on the inner wall of the operating ring (9). The internal gear ring (14) meshes with the other end of the four driven gears (12).

3. The metallurgical powder preparation equipment according to claim 1, characterized in that, Each of the four discharge circulators includes a discharge connector (15). One end of the discharge connector (15) is connected to the lower wall of the mixing tank (2), and the other end of the discharge connector (15) is connected to an operating pipe (16). A discharge port (17) is provided on the lower wall of the operating pipe (16). A discharge controller is movably fitted on the outside of the operating pipe (16). The other end of the operating pipe (16) is connected to a screw conveyor (18). One side of the top of the screw conveyor (18) is connected to the upper end of the side wall of the mixing tank (2).

4. The metallurgical powder preparation equipment according to claim 3, characterized in that, The discharge controller includes an annular sleeve (19), which is movably fitted on the outside of the operating tube (16) and corresponds to the discharge port (17). An operating plate (20) is installed on one side of the lower end of the annular sleeve (19). One end of the operating plate (20) is connected to a discharge cylinder (21), and the other end of the discharge cylinder (21) is equipped with a fixing plate (22). The fixing plate (22) is connected to the outer wall of the other side of the lower end of the operating tube (16).

5. The metallurgical powder preparation equipment according to claim 1, characterized in that, The rotation limiter includes a fixed ring (23), which is fixedly installed on the upper part of the outer wall of the mixing tank (2). Four limit pieces (24) are evenly distributed on the outer side of the fixed ring (23). An installation ring (25) is installed on the outer wall of the cover (4). Four connecting pieces (26) are evenly distributed on the outer wall of the installation ring (25). Four limit rods (27) are fixedly installed at the lower ends of the four connecting pieces (26). Four limit holes (28) are opened at the center of the four limit pieces (24). The bottom ends of the four limit rods (27) respectively move through the four limit holes (28).

6. The metallurgical powder preparation equipment according to claim 3, characterized in that, A sampling module is installed on the outer wall of the screw conveyor (18). The sampling module includes a sampling hole (29). The sampling hole (29) is opened at the center of the outer wall of the screw conveyor (18). A support ring (30) is fixedly installed on the outer wall of the screw conveyor (18). The support ring (30) is located below the sampling hole (29). A sampling closing ring (31) is movably fitted on the outer side of the screw conveyor (18). The bottom end of the sampling closing ring (31) contacts the upper wall surface of the support ring (30) and is located outside the sampling hole (29).

7. The metallurgical powder preparation equipment according to claim 3, characterized in that, The collector includes four support frames (32), the outer sides of which are fixedly connected to the side walls of the four columns (1), and a conical hopper (33) is installed on the upper end of the four support frames (32), which is located below the discharge controller.

8. The metallurgical powder preparation equipment according to claim 2, characterized in that, The four stirring shafts (13) are installed in the opposite direction to the mixing shaft (6).

9. A method for preparing metallurgical powder, applied to the metallurgical powder preparation equipment according to any one of claims 1-8, characterized in that, Includes the following steps; Step S1: Device setup and fixation: Move the mixing device to the designated position, support it with four columns, and connect it to the control system; Step S2: Discharge Circulator Preparation: Turn off the discharge controllers of the four discharge circulators at the bottom of the mixing tank to put them into circulation mode; Step S3: Mixer installation: Use hoisting equipment to place the mixer above the mixing tank, ensuring that the four limit rods are embedded in the limit holes, and fix the equipment with structures such as fixing rings and limit plates to prevent vibration or displacement; Step S4: Start the mixing motor: Drive the mixing motor to work, drive the mixing shaft and four stirring shafts to rotate at high speed to stir and mix the powder; at the same time, drive gear and driven gear drive the scraper to rotate and scrape the powder adhering to the inner wall of the mixing tank. Step S5: Feeding: Inject metallurgical powder into the mixing tank through two feed hoppers; Step S6: Circulation Mixing: The discharge circulator operates, sending the powder through the discharge connector and operating pipe into the screw conveyor, and then back to the mixing tank to achieve the circulation mixing of the powder; Step S7: Sampling and Inspection: During the mixing process, lift the sampling closing ring and take a powder sample through the sampling hole on the screw conveyor to check the mixing effect; after sampling, release the sampling closing ring and the sampling hole will be automatically closed. Step S8: Discharge Operation: After mixing is completed, drive the discharge cylinder to move the annular sleeve to expose the discharge port and start discharging; Step S9: Powder collection: The discharged powder is collected through the conical hoppers on the four support frames and then centrally conveyed.

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