Ferrite powder storing and discharging device

Abstract

The invention provides a ferrite powder storing and discharging device. Comprising a frame body, a mixed storage tank is installed on the frame body, three powder tanks are arranged around the mixed storage tank, a third vibration motor is installed on the outer wall of each powder tank, and a screw feeding mechanism leading to the mixed storage tank is arranged below each powder tank. According to the device, the particle size grading mechanism is integrated on the device, so that the quality of a pretreatment process before ferrite powder is stored can be improved, and the quality of the ferrite powder is improved by combining vibration screening with a grading system consisting of a grading machine, a cyclone separator and a pulse dust collector; ferrite powder subjected to a ball milling process is accurately separated into coarse, medium and fine components and independently stored, and then the components are accurately mixed according to a set proportion through a screw feeding mechanism driven by a servo motor, so that the uniformity of material particle size distribution is fundamentally improved, a quality foundation is laid for subsequent pressing and sintering of magnetic cores, and the production efficiency is improved. And the production of high-quality magnetic cores can be realized.

Description

TECHNICAL FIELD

[0001] The application relates to a powder storage and taking device, in particular to a ferrite powder storage and discharging device, and belongs to the technical field of ferrite powder storage. BACKGROUND

[0002] The ferrite powder storage and discharging device is a key equipment in the production process of ferrite magnetic materials, and is mainly used for centrally storing, sealing and preventing moisture, and stably conveying prepared ferrite powder raw materials to subsequent processes according to needs.

[0003] The traditional ferrite powder storage and discharging device directly injects the ferrite powder after ball milling into a container for storage, and the single container storage mode is easy to cause uneven particle size distribution of the powder, and then may directly affect the filling uniformity of subsequent magnetic core compression molding and the densification in the sintering process, finally causes the sintered product to fluctuate in density, microstructure and magnetic performance, affects the product quality stability, and then needs to be improved.

[0004] Therefore, the application provides a ferrite powder storage and discharging device. SUMMARY

[0005] Therefore, the application provides a ferrite powder storage and discharging device.

[0006] The technical scheme of the present application is implemented as follows: a ferrite powder storage and discharging device, comprising a frame body, a mixed storage tank is installed on the frame body, and three powder tanks are arranged around the mixed storage tank, a third vibration motor is installed on the outer wall of each powder tank, and a screw feeding mechanism leading to the mixed storage tank is arranged below each powder tank; a raw material hopper is installed at the top end of the frame body, a first vibration motor is installed on the outer wall of the raw material hopper, a coarse particle feeding head is installed below the raw material hopper on the frame body, a feeding cylinder is connected below the coarse particle feeding head, and the feeding cylinder is in communication with the top end of the powder tank on the right side of the mixed storage tank; a telescopic rod is further installed on the frame body, a guide plate is installed at the upper end of the telescopic rod, and a spring is sleeved on the telescopic rod; a fine screen plate is installed above the guide plate, a second vibration motor is installed below the guide plate, a classifier is further installed above the frame body, an air inlet pipe is connected to the air inlet end of the classifier, and a feeding bin is connected to the end of the air inlet pipe away from the air inlet end; a cyclone separator is further installed above the frame body, the discharge end of the cyclone separator is in communication with the top end of the powder tank located behind the mixed storage tank, and the cyclone separator and the classifier are in communication through a pipeline; a pulse dust collector is further installed on the frame body, the cyclone separator is connected to the pulse dust collector through a connecting pipe above the cyclone separator; the discharge end of the pulse dust collector is in communication with the top end of the powder tank located on the left side of the mixed storage tank; an electric discharge valve is arranged on the discharge pipeline of the feeding cylinder, the cyclone separator and the pulse dust collector, an air duct is connected to the pulse dust collector, an air blower is installed on the frame body, the pulse dust collector is connected to the air inlet end of the air blower through the air duct, and a check valve is arranged on the air duct.

[0007] Further preferably, the screw feeding mechanism comprises a conveying cylinder, a feeding screw is rotatably installed in the conveying cylinder, one end of the conveying cylinder is in communication with the mixed storage tank, a servo motor is installed at the end of the conveying cylinder away from the mixed storage tank, and the feeding screw is coaxially connected to the output end of the servo motor.

[0008] Further preferably, a flange cover is installed above the mixed storage tank, a stirring motor is installed above the flange cover, a stirring shaft is rotatably installed in the mixed storage tank, and the stirring shaft is coaxially connected to the output end of the stirring motor.

[0009] Further preferably, one end of the spring abuts against the top of the frame body, and the other end of the spring abuts against the bottom of the guide plate.

[0010] Further preferably, the plate surface of the guide plate and the plate surface of the fine screen plate are both inclined relative to the horizontal plane, and the inclination directions of the two are opposite, and the feeding bin is located below the inclined discharge end of the guide plate.

[0011] Further preferably, the coarse particle feeding head is provided with a reserved groove, and the inclined discharging end of the fine screen plate extends into the reserved groove.

[0012] Further preferably, the mixing tank is integrated below with an electromagnetic flow-assisted discharging mechanism, which comprises a ceramic mounting frame mounted below the mixing tank, and a plurality of independent electromagnetic coils arranged around the ceramic mounting frame; a switch controller is arranged laterally to the electromagnetic coils, and a current amplifier is arranged laterally to the switch controller; the output end of the current amplifier is electrically connected to the switch controller; and the switch controller is signal-connected to each electromagnetic coil respectively for controlling the on-off timing sequence thereof.

[0013] Further preferably, the material of the conical bottom of the mixing tank is aluminum alloy.

[0014] Further preferably, the plurality of independent electromagnetic coils are arranged in accordance with the outer contour line of the conical bottom of the mixing tank, for generating a directional moving magnetic field in the conical area to assist in discharging.

[0015] Further preferably, the flange cover is provided with a sealing cover, the stirring shaft is provided with an upper support plate and a lower support plate, the upper support plate is provided with an insertion block, the insertion block is provided with a scraper, the insertion block and the upper support plate are fixed by bolts, the back surface of the scraper is provided with a T-shaped block, and the lower support plate is provided with a T-shaped groove matched with the T-shaped block.

[0016] The embodiment of the present application has the following advantages due to the adoption of the above technical solutions. Firstly, in the present application, the quality of the pretreatment process of the ferrite powder before storage is improved by integrating a particle size grading mechanism into the device, the ferrite powder after the ball milling process is accurately separated into three components of coarse, medium and fine by combining the vibration screening with the grading system composed of a classifier, a cyclone separator and a pulse dust collector, and then the three components are independently stored, and the accurate proportioning is performed according to the set proportion by the screw feeding mechanism driven by a servo motor, so that the uniformity of the particle size distribution of the material is fundamentally improved, thereby laying a quality foundation for the subsequent pressing and sintering of the magnetic core, and the production of high-quality magnetic cores can be realized.

[0017] Secondly, in the present application, the electromagnetic flow-assisted discharging mechanism is integrated at the bottom of the mixing tank, the non-contact dynamic magnetic field is used to actively destroy the arch bridge of the powder, which not only effectively solves the problem of discharging blockage, but also significantly improves the stability of the discharging process, compared with the pulse discharging easily caused by the traditional mechanical flow-assisting method, the material flow can be realized in a continuous, stable and flow-controllable manner, and the uniformity and continuity of the discharging are further optimized while preventing blockage.

[0018] The above summary is intended to illustrate, but not limit, the present application. Further aspects, embodiments and features of the present application will become apparent from the following detailed description, taken in conjunction with the accompanying drawings and the above description. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0020] Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the right side structure of the present application; Figure 3 is a schematic diagram of the back structure of the present application; Figure 4 is a schematic diagram of the left side structure of the present application; Figure 5 is an exploded structural schematic diagram of the raw material hopper in the present application; Figure 6 is a schematic diagram of the partial structure section of the present application; Figure 7 is a schematic diagram of the vibrating screen structure in the present application; Figure 8 is a schematic diagram of the electromagnetic auxiliary discharge structure in the present application; Figure 9 is an exploded diagram of the internal structure of the mixing tank in the present application; Figure 10 is an enlarged view of the partial structure of the present application Figure 9 ; Figure 11 is an internal structure diagram of the electrically operated discharge valve in the present application.

[0021] 1, frame; 2, mixed storage tank; 3, powder tank; 4, conveying cylinder; 5, feeding screw; 6, servo motor; 7, raw material hopper; 8, first vibration motor; 9, coarse particle feeding head; 10, feeding cylinder; 11, telescopic rod; 12, guide plate; 13, spring; 14, fine screen plate; 15, second vibration motor; 16, feeding bin; 17, classifier; 18, feeding air pipe; 19, cyclone separator; 20, connecting pipe; 21, pulse dust collector; 22, electric discharge valve; 23, third vibration motor; 24, air duct; 25, air blower; 26, check valve; 27, stirring motor; 28, stirring shaft; 29, ceramic mounting frame; 30, electromagnetic coil; 31, switch controller; 32, current amplifier; 33, flange cover; 34, sealing cover; 35, upper support plate; 36, lower support plate; 37, scraper; 38, plug; 39, bolt; 40, T-shaped groove; 41, T-shaped block. DETAILED DESCRIPTION

[0022] In the following, certain example embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature and not limiting.

[0023] Embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] As Figures 1-11As shown, the embodiment of the present application provides a ferrite powder storage and discharging device, which comprises a frame body 1, a mixed storage tank 2 is installed on the frame body 1, and three powder tanks 3 are arranged around the mixed storage tank 2, a third vibration motor 23 is installed on the outer wall of each powder tank 3, and a screw feeding mechanism leading to the mixed storage tank 2 is arranged below each powder tank 3; a raw material hopper 7 is installed at the top end of the frame body 1, a first vibration motor 8 is installed on the outer wall of the raw material hopper 7, a coarse particle feeding head 9 is installed below the raw material hopper 7 on the frame body 1, a feeding cylinder 10 is connected below the coarse particle feeding head 9 and communicates with the top end of the powder tank 3 located at the right side of the mixed storage tank 2 through the feeding cylinder 10; a telescopic rod 11 is also installed on the frame body 1, a guide plate 12 is installed at the upper end of the telescopic rod 11, and a spring 13 is sleeved on the telescopic rod 11; a fine sieve plate 14 is installed above the guide plate 12, a second vibration motor 15 is installed below the guide plate 12, a classifier 17 is also installed above the frame body 1, an air inlet pipe 18 is connected to the air inlet end of the classifier 17, and one end of the air inlet pipe 18 away from the air inlet end is connected to a feeding bin 16; a cyclone separator 19 is also installed above the frame body 1, the discharge end of the cyclone separator 19 communicates with the top end of the powder tank 3 located at the rear of the mixed storage tank 2, and the cyclone separator 19 and the classifier 17 communicate through a pipeline; a pulse dust collector 21 is also installed on the frame body 1, and the cyclone separator 19 is connected to the pulse dust collector 21 through a connecting pipe 20; the discharge end of the pulse dust collector 21 communicates with the top end of the powder tank 3 located at the left side of the mixed storage tank 2; an electric discharge valve 22 is arranged on the discharge pipeline of the feeding cylinder 10, the cyclone separator 19 and the pulse dust collector 21, an air induction pipeline 24 is connected to the pulse dust collector 21, an air induction fan 25 is installed on the frame body 1, the pulse dust collector 21 is connected to the air induction end of the air induction fan 25 through the air induction pipeline 24, and a check valve 26 is arranged on the air induction pipeline 24.

[0025] As shown in the drawings, Figure 5 , 6 In one embodiment, the screw feeding mechanism comprises a conveying cylinder 4, a feeding screw 5 is rotatably installed in the conveying cylinder 4, one end of the conveying cylinder 4 communicates with the mixed storage tank 2, a servo motor 6 is installed at the end of the conveying cylinder 4 away from the mixed storage tank 2, and the feeding screw 5 is coaxially and drivingly connected to the output end of the servo motor 6; the discharge end of the powder tank 3 penetrates the cylinder wall of the conveying cylinder 4 and communicates with the inside of the conveying cylinder 4. The screw feeding mechanism directly drives the feeding screw 5 through the servo motor 6, realizes accurate control of the powder feeding speed and quantity, ensures that the different particle size powders from the powder tanks 3 into the mixed storage tank 2 can be proportioned according to the preset ratio, and thus guarantees the uniformity and consistency of the particle size distribution of the mixed material.

[0026] As shown in the drawings, Figure 9As shown in the drawings, in one embodiment, a flange cover 33 is mounted above the mixing tank 2, a stirring motor 27 is mounted above the flange cover 33, a stirring shaft 28 is rotatably mounted inside the mixing tank 2, and the stirring shaft 28 is coaxially and drivingly connected to the output end of the stirring motor 27. By arranging the stirring shaft 28, the mixed powder entering the tank can be further homogenized, effectively avoiding the stratification phenomenon that may be caused by the density difference of powders of different particle sizes.

[0027] As shown in the drawings, Figure 7 In one embodiment, one end of the spring 13 abuts against the upper portion of the frame body 1, and the other end of the spring 13 abuts against the lower portion of the guide plate 12. The buffering effect of the spring 13 can effectively absorb the vibration impact generated during the operation of the fine screen plate 14 and the guide plate 12, reduce the fatigue damage to the structure of the frame body 1, and prolong the service life of the equipment.

[0028] As shown in the drawings, Figure 7 In one embodiment, the surfaces of the guide plate 12 and the fine screen plate 14 are both inclined relative to the horizontal plane, and the inclination directions of the two are opposite. The charging bin 16 is located below the inclined discharge end of the guide plate 12. The guide plate 12 and the fine screen plate 14 form an optimized material guide path, which not only improves the screening efficiency, but also guides the screened material to quickly and accurately enter the subsequent corresponding workstations, ensuring the classification accuracy.

[0029] As shown in the drawings, Figure 7 In one embodiment, a reserved groove is formed in the coarse particle feeding head 9, and the inclined discharge end of the fine screen plate 14 extends into the reserved groove. This effectively prevents the scattering or dusting of coarse particles during the transfer process, maintains a clean working environment, and ensures the accuracy of material classification.

[0030] As shown in the drawings, Figure 8 In one embodiment, an electromagnetic flow-assisted discharge mechanism is integrated below the mixing tank 2, which includes a ceramic mounting bracket 29 mounted below the mixing tank 2, and a plurality of independent electromagnetic coils 30 arranged around the ceramic mounting bracket 29. A switch controller 31 is arranged on the side of the electromagnetic coils 30, and a current amplifier 32 is arranged on the side of the switch controller 31. The output end of the current amplifier 32 is electrically connected to the switch controller 31. The switch controller 31 is signal-connected to each electromagnetic coil 30 for controlling the on-off timing thereof. The electromagnetic flow-assisted discharge mechanism actively destroys the powder arch through a non-contact dynamic magnetic field, fundamentally solves the problem of blockage of the discharge port of the mixing tank 2, realizes a stable, continuous and controllable discharge process, and has the advantages of no wear, no pollution, low energy consumption and precise control.

[0031] As shown in the drawings, Figure 8As shown, in one embodiment, the conical bottom of the mixing tank 2 is made of aluminum alloy. The conical bottom of the mixing tank 2, made of aluminum alloy, combines good non-magnetic properties and structural strength, while also exhibiting excellent corrosion resistance and lightweight characteristics, making it suitable for the processing environment of ferrite powders.

[0032] like Figure 8 As shown, in one embodiment, multiple sets of independent electromagnetic coils 30 are arranged conforming to the outer contour of the conical bottom of the mixing tank 2 to generate a directional magnetic field within the conical region to assist in material discharge. The electromagnetic coils 30 are arranged conforming to the conical bottom contour, thereby applying effective magnetic traction to the powder and improving its flow performance within the conical region.

[0033] like Figure 9 , 10 As shown, in one embodiment, a sealing cover 34 is provided on the flange cover 33, and an upper support plate 35 and a lower support plate 36 are installed on the stirring shaft 28. An insert block 38 is inserted into the upper support plate 35, and a scraper 37 is installed on the insert block 38. The insert block 38 and the upper support plate 35 are fixed together by bolts 39. A T-shaped block 41 is also installed on the back of the scraper 37, and a T-shaped groove 40 adapted to the T-shaped block 41 is provided in the lower support plate 36. The scraper 37 adopts a modular and detachable design, which allows the scraper 37 to be disassembled and installed separately without disassembling the stirring shaft 28 and other major components when replacement or maintenance is required, greatly simplifying the maintenance process.

[0034] In operation, the present invention is as follows: At the start of operation, the ball-milled ferrite powder is fed into the raw material hopper 7. Then, under the vibration of the first vibrating motor 8, the raw material is evenly dispersed and falls onto the fine sieve plate 14 below. During this process, the fine sieve plate 14 vibrates at high frequency under the drive of the second vibrating motor 15 to achieve preliminary screening. Fine powder that meets the particle size requirements passes directly through the sieve, while coarser particles that do not pass through slide down the sieve surface. The fine powder that passes through the sieve falls onto the guide plate 12 and is guided into the feeding bin 16. At the same time, coarse particles that fail to pass through the sieve are discharged from the inclined discharge end of the fine sieve plate 14 and fall into the feeding cylinder 10 through the reserved groove of the coarse particle feed head 9. Then, they are transported to the powder tank 3 on the right side of the mixing tank 2 for storage, thus completing the first step of coarse particle separation.

[0035] Then, the fine powder in the charging bin 16 is subsequently sucked into the classifier 17 through the feed air pipe 18, inside the classifier 17, the powder is further finely classified by means of precisely controlled air flow field, and enters the cyclone separator 19 through the pipe. In the cyclone separator 19, the medium particle powder is separated and collected under the action of centrifugal force, and falls into the powder tank 3 located behind the mixing tank 2; while the finer powder is carried by the airflow into the pulse dust collector 21 through the connecting pipe 20, so as to intercept and collect the very fine powder and send it into the powder tank 3 located on the left side of the mixing tank 2. Throughout the process, the induced draft fan 25 provides power for the air flow system, and the check valve 26 ensures one-way flow of the airflow to prevent backflow. At this point, the raw material is accurately separated into three components of coarse, medium and fine, and stored in three independent powder tanks 3.

[0036] When the material preparation work is needed, the third vibration motor 23 on the outer wall of each powder tank 3 first works to ensure smooth discharging. Then, the electric discharge valve 22 at the bottom of each powder tank 3 is opened as required, so that the powder of different particle sizes falls into the screw feeder mechanism below it at the set flow rate. Then, the servo motor 6 is started to directly drive the feeding screw 5 to rotate in the conveying cylinder 4, which pushes the powder to move axially along the conveying cylinder 4 under the friction force of the screw blade and the powder, and is pushed into the mixing tank 2 together, realizing accurate proportional mixing of the coarse, medium and fine particle powders.

[0037] After the mixed powder enters the mixing tank 2, the stirring motor 27 is started. The output end of the stirring motor 27 is coaxially connected with the stirring shaft 28 to drive the stirring shaft 28, the upper support plate 35, the lower support plate 36 and the scraper 37 to rotate together. Under the rotation scraping and stirring action of the scraper 37, the powder is further mixed and homogenized, and the adhesion of the powder to the tank wall is effectively prevented. When the scraper 37 needs to be disassembled and maintained, first open the sealing cover 34 at the top of the mixing tank 2 to expose the upper support plate 35, the lower support plate 36 and the scraper 37 on the stirring shaft 28, then find the bolt 39 on the upper support plate 35, unscrew and completely remove the bolt, and then manually pull out the scraper 37 in the vertical direction. As the scraper 37 is pulled out, the plug 38 is also separated from the upper support plate 35, and at the same time, the T-shaped block 41 on the back of the scraper 37 is synchronously slid out of the T-shaped groove 40 in the lower support plate 36.

[0038] When the feeding and discharging is needed, the electromagnetic flow assisting discharging mechanism at the bottom of the mixing tank 2 starts to work. The current amplifier 32 provides power for the system, and the switch controller 31 sends on-off time sequence signals to the multiple groups of independent electromagnetic coils 30 arranged at the conical bottom of the mixing tank 2 according to the predetermined program, the electromagnetic coils 30 are arranged according to the contour line of the conical bottom, and a downward moving dynamic magnetic field is generated after the electromagnetic coils 30 are sequentially electrified, the magnetic field penetrates the aluminum alloy tank wall and acts on the ferrite powder, and a downward micro-tension is generated on each magnetic particle, so that the arch bridge of the powder formed is actively broken from the inside, the powder shows the flow characteristics of a fluid, and is stably and continuously discharged from the discharge port, effectively solving the problems of uneven feeding or blockage in the traditional way.

[0039] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of various changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A ferrite powder storage and discharge device, characterized in that: The system includes a frame (1), on which a mixing tank (2) is mounted, and three powder tanks (3) are arranged around the mixing tank (2). A third vibration motor (23) is installed on the outer wall of each powder tank (3), and a screw feeding mechanism leading to the mixing tank (2) is provided below each powder tank (3). A raw material hopper (7) is installed at the top of the frame (1), and a first vibration motor (8) is installed on the outer wall of the raw material hopper (7). A coarse particle feed head (9) is installed on the frame (1) below the raw material hopper (7). (9) A feeding cylinder (10) is connected below, and the feeding cylinder (10) is connected to the top of the powder tank (3) located on the right side of the mixing tank (2); a telescopic rod (11) is also installed on the frame (1), a guide plate (12) is installed at the upper end of the telescopic rod (11), and a spring (13) is sleeved on the telescopic rod (11); a fine sieve plate (14) is installed above the guide plate (12), a second vibration motor (15) is installed below the guide plate (12), and a classifier (17) is also installed above the frame (1). The air inlet end of the cyclone separator (1) is connected to a feed duct (18), and the end of the feed duct (18) away from the air inlet end is connected to a feeding hopper (16); a cyclone separator (19) is also installed on the top of the frame (1), the discharge end of the cyclone separator (19) is connected to the top of the powder tank (3) located behind the mixing tank (2), and the cyclone separator (19) is connected to the classifier (17) through a pipe; a pulse dust collector (21) is also installed on the frame (1), and the top of the cyclone separator (19) is connected to the pulse dust collector (21) through a connecting pipe (20). The discharge end of the pulse dust collector (21) is connected to the top of the powder tank (3) located on the left side of the mixing tank (2); the discharge pipes of the feeding cylinder (10), cyclone separator (19) and pulse dust collector (21) are all equipped with electric discharge valves (22); the pulse dust collector (21) is connected to the exhaust pipe (24); the frame (1) is equipped with an exhaust fan (25); the pulse dust collector (21) is connected to the exhaust end of the exhaust fan (25) through the exhaust pipe (24); and the exhaust pipe (24) is equipped with a check valve (26).

2. The ferrite powder storage and discharge device according to claim 1, characterized in that: The screw feeding mechanism includes a conveying cylinder (4), in which a feeding screw (5) is rotatably installed. One end of the conveying cylinder (4) is connected to the mixing tank (2), and a servo motor (6) is installed at the end of the conveying cylinder (4) away from the mixing tank (2). The feeding screw (5) and the output end of the servo motor (6) are coaxially connected. The discharge end of the powder tank (3) passes through the cylinder wall of the conveying cylinder (4) and is connected to the inside of the conveying cylinder (4).

3. The ferrite powder storage and discharge device according to claim 1, characterized in that: A flange cover (33) is installed on the top of the mixing tank (2), and a stirring motor (27) is installed on the top of the flange cover (33). A stirring shaft (28) is rotatably installed inside the mixing tank (2), and the stirring shaft (28) is coaxially connected to the output end of the stirring motor (27).

4. The ferrite powder storage and discharge device according to claim 1, characterized in that: One end of the spring (13) abuts against the top of the frame (1), and the other end of the spring (13) abuts against the bottom of the guide plate (12).

5. The ferrite powder storage and discharging device according to claim 1, characterized in that: The surface of the guide plate (12) and the surface of the fine screen plate (14) are both inclined relative to the horizontal plane, and their inclination directions are opposite. The feeding bin (16) is located below the inclined feeding end of the guide plate (12).

6. The ferrite powder storage and discharge device according to claim 1, characterized in that: The coarse feed head (9) is provided with a reserved groove, and the inclined discharge end of the fine screen plate (14) extends into the reserved groove.

7. A ferrite powder storage and discharge device according to claim 3, characterized in that: An electromagnetic flow-assisted discharge mechanism is integrated below the mixing tank (2), including a ceramic mounting frame (29) installed below the mixing tank (2). Multiple independent electromagnetic coils (30) are arranged around the ceramic mounting frame (29). A switch controller (31) is provided on the side of the electromagnetic coil (30), and a current amplifier (32) is provided on the side of the switch controller (31). The output terminal of the current amplifier (32) is electrically connected to the switch controller (31). The switch controller (31) is signal connected to each of the electromagnetic coils (30) to control their on / off timing.

8. A ferrite powder storage and discharge device according to claim 7, characterized in that: The conical bottom of the mixed storage tank (2) is made of aluminum alloy.

9. A ferrite powder storage and discharge device according to claim 7, characterized in that: The multiple independent electromagnetic coils (30) are arranged in accordance with the outer contour of the conical bottom of the mixed storage tank (2) to generate a directional magnetic field in the conical area to assist in material discharge.

10. A ferrite powder storage and discharge device according to claim 3, characterized in that: A sealing cover (34) is provided on the flange cover (33). An upper support plate (35) and a lower support plate (36) are installed on the stirring shaft (28). An insert block (38) is inserted into the upper support plate (35). A scraper (37) is installed on the insert block (38). The insert block (38) is fixed to the upper support plate (35) by bolts (39). A T-shaped block (41) is also installed on the back of the scraper (37). A T-shaped groove (40) that matches the T-shaped block (41) is provided in the lower support plate (36).

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