Permanent magnet pre-sintering granular material mixing and blending device and control method thereof

Abstract

The invention relates to the technical field of permanent magnetic ferrite pre-sintering material production, in particular to a permanent magnetic pre-sintering material granule mixing and blending device and a control method thereof. Granules are screened through the first granule bin and the second granule bin and then conveyed into the third granule bin through the bucket elevator, the reasonable arrangement of the discharging adjusting flashboard, the vibration feeder and the granule dispersing hopper is matched, the granules can be evenly mixed, batch production of semi-finished products of the granules in multiple kilns is achieved, the production efficiency is improved, and the production cost is reduced. The problem that particles are uneven and need to be screened and processed independently is solved, closed-loop production can be achieved, and reentrainment of dust on a working site can be reduced. According to the invention, through batch production, the grinding efficiency of the dry cylinder mill can be fully exerted, and batch ball milling can effectively improve the consistency of products in the same batch, ensure the product quality, improve the working efficiency, reduce the number of grinding equipment and greatly reduce the production energy consumption.

Description

Technical Field

[0001] The invention relates to the technical field of permanent magnet ferrite pre-sintered material production, and in particular to a permanent magnet pre-sintered material particle material mixing and batching device and a control method thereof. Background Art

[0002] The production of permanent magnet pre-burned materials is to mix red iron oxide and strontium carbonate, sinter them in a rotary kiln, transfer them into the particle silo, and then complete the product packaging through the grinding process. Among them, transferring the particle material into the feed silo is a key equipment process. The grinding process is related to product stability and consistency, and is matched with the grinding equipment, which affects the equipment use and maintenance as well as the grinding output and energy consumption.

[0003] At present, the existing technology of pellet material feeding and grinding has the following disadvantages: 1) The process of the existing technology is to feed the pellet material bin into the powder bin after kiln sintering, and adopt a single single batch kiln for grinding, which has the problems of low output and high power consumption. When it is produced at full load on a large scale, it is difficult to meet the grinding needs of the production line; 2) The storage capacity of the pellet material bin in the existing technology can only meet the production needs of a single kiln and a single batch, which is difficult to match the production organization; 3) When using multiple kilns, the existing technology needs to use multiple grinding equipment for production, and the energy consumption and loss of the equipment are high, which not only increases the difficulty of maintenance, but also the cost of spare parts is high; 4) When the existing technology produces the same variety in multiple kilns, due to the differences in kilns and firing processes, it will affect the stability and consistency of product performance. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in view of the shortcomings of the existing process technology, a permanent magnet pre-burned material particle mixing and batching device and a control method thereof are provided, which can realize the batch production of particles from multiple kilns, solve the problem that uneven particles require separate screening and processing procedures, and at the same time realize closed-loop production, effectively improve product consistency, improve work efficiency, reduce the number of grinding equipment, and greatly reduce production energy consumption.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] 1. A permanent magnet pre-sintered material granular material mixing and batching device

[0007] The present invention provides a permanent magnet pre-sintered material granule material mixing and batching device, which mainly comprises: a 1# feeding device, a 2# feeding device, a bucket elevator and a 3# feeding device;

[0008] The 1# feeding device comprises a 1# pellet silo 1, the top and bottom of the 1# pellet silo 1 are respectively provided with a 1# pellet feeding hopper 2 and a 1# material discharge regulating gate 3, and a 1# vibrating feeder 4 is provided below the 1# material discharge regulating gate 3;

[0009] The 2# feeding device comprises a 2# pellet silo 6, the top and bottom of the 2# pellet silo 6 are respectively provided with a 2# pellet inlet hopper 12 and a 2# material discharge regulating gate 13, and a 2# vibrating feeder 14 is provided below the 2# material discharge regulating gate 13;

[0010] The 1# particle inlet hopper 2 and the 2# particle inlet hopper 12 are both provided with a particle grading screen 19 with adjustable sieving particle size, and the particle grading screen 19 is arranged in an inclined manner;

[0011] The output ends of the 1# vibrating feeder 4 and the 2# vibrating feeder 14 are respectively connected to the oblique feed hopper 18 provided at the bottom of the bucket elevator 17 through the 1# pellet material discharge trough 5 and the 2# pellet material discharge trough 7, and the bucket elevator 17 is provided with a pellet material discharge port 8;

[0012] The 3# feeding device includes a 3# particle silo 10, and the top and bottom of the 3# particle silo 10 are respectively provided with a particle dispersion hopper 9 and a 3# material discharge regulating gate 15, the particle dispersion hopper 9 is arranged directly below the particle discharge port 8 of the bucket elevator, and a 3# vibrating feeder 16 is arranged below the 3# material discharge regulating gate 15, and a dry ball mill 11 is arranged below the output end of the 3# vibrating feeder 16.

[0013] Furthermore, the 1# pellet silo 1 and the 2# pellet silo 6 are arranged side by side at the same height, and the 1# feeding regulating gate 3, the 1# vibrating feeder 4, the 2# feeding regulating gate 13, the 2# vibrating feeder 14, the 3# feeding regulating gate 15 and the 3# vibrating feeder 16 are all connected to the corresponding controllers.

[0014] Furthermore, the 1# vibrating feeder 4, the 2# vibrating feeder 14, and the 3# vibrating feeder 16 are respectively installed at the bottom of the corresponding particle silo, and each vibrating feeder is connected to a plurality of tie rod hooks welded at the bottom of the corresponding particle silo through a plurality of spring tie rod hooks.

[0015] Furthermore, the 1# pellet material feed trough 5 and the 2# pellet material feed trough 7 are both circular tubular feed troughs, the size of which is adapted to the size of the pellets in the corresponding pellet silo, and the 1# pellet material feed trough 5 and the 2# pellet material feed trough 7 are both tilted downward at 35 to 50 degrees and connected to the inclined feed hopper 18 of the bucket elevator.

[0016] Furthermore, the 1# pellet material discharge trough 5 and the 2# pellet material discharge trough 7 are respectively welded and fixed below the 1# pellet material silo 1 and the 2# pellet material silo 6 through four supporting round steel bars.

[0017] Furthermore, a speed-adjustable vertical lifting mechanism is provided inside the bucket elevator 17, and an inclined feed hopper 18 and a granular material discharge port 8 are provided at the bottom and top of the bucket elevator 17, respectively, and the discharge end of the granular material discharge port 8 is arranged directly above the granular material dispersion hopper 9.

[0018] Furthermore, the particle material dispersion hopper 9 is installed on the top of the 3# particle silo 10, and the ends are respectively welded to two supporting channel steels, and the two supporting channel steels are respectively welded to the two side silo walls of the 3# particle silo 10; a dust collector is also installed on the top of the 3# particle silo 10.

[0019] Furthermore, the particle material dispersing hopper 9 is specifically in the shape of a truncated cone, and the diameter of the lower part of the truncated cone = the diameter of the upper part of the truncated cone × 2, and the screening particle size of the particle material dispersing hopper 9 is adjustable.

[0020] 2. A control method for a permanent magnet pre-burned material granular material mixing batching device

[0021] Based on the same inventive concept, the present invention also provides a control method for the permanent magnet pre-sintered material particle mixing and batching device as described above, which specifically includes the following steps:

[0022] S1, particle grading screen size adjustment: according to the particle size of the pellets to be loaded in the 1# pellet silo and the 2# pellet silo, adjust the screening particle size of the particle grading screen inside the 1# pellet hopper and the 2# pellet hopper to match the particle size of the corresponding pellets to be loaded;

[0023] S2, 1# and 2# material discharge regulating gate opening control: according to the discharge speed required by 1# pellet silo and 2# pellet silo, adjust the opening D1 of 1# material discharge regulating gate and the opening D2 of 2# material discharge regulating gate respectively;

[0024] S3, vibration frequency control of 1# and 2# vibration feeders: the vibration frequency of the 1# vibration feeder W1=K1×D1, the vibration frequency of the 2# vibration feeder W2=K2×D2, wherein K1 and K2 are both discharge amount-vibration frequency conversion coefficients;

[0025] S4, bucket elevator lifting speed adaptive control, the real-time lifting speed V of the bucket elevator satisfies the following formula:

[0026] V=(W1 / K1+W2 / K2)×C / 2

[0027] In the formula, C is the conversion coefficient of discharge volume-lifting speed;

[0028] S5, adjusting the size of the particle dispersion hopper: adjusting the screening particle size of the particle dispersion hopper according to the mixed size of the particle materials after batching, so as to make it compatible with the mixed size of the particle materials;

[0029] S6, joint control of 3# material discharge adjustment gate opening and 3# vibration feeder vibration frequency: according to the grinding speed of the dry ball mill, the 3# material discharge adjustment gate opening and 3# vibration feeder vibration frequency are adjusted in real time to match the discharge speed of the mixed material with the grinding speed.

[0030] Compared with the prior art, the present invention has the following main advantages:

[0031] 1. The present invention provides a permanent magnet pre-burned material granule material mixing and batching device, which screens the granules through the 1# and 2# granule silos and then transmits them to the 3# granule silo through a bucket elevator. With the reasonable setting of the material discharge adjustment gate, the vibrating feeder, and the granule material dispersion bucket, the granules can be evenly mixed, and the semi-finished granule material batch production of multiple kilns is realized, which solves the problem that the uneven particles need to be screened separately. At the same time, closed-loop production can be realized, and secondary dust at the work site can be reduced;

[0032] 2. The present invention can give full play to the grinding efficiency of the dry tube mill through batch production, and the batch ball mill can effectively improve the consistency of the same batch of products, ensure product quality, and at the same time reduce the number of grinding equipment and greatly reduce production energy consumption;

[0033] 3. The control method of a permanent magnet pre-burned granular material mixing and batching device provided by the present invention can adjust the size of the granular material grading screen to control the feed particle size according to production needs, control the granular material discharge amount by adjusting the frequency of the vibrating feeder, and control the discharge frequency of the two vibrators to match the discharge amount with the lifting and transporting amount of the bucket elevator, thereby effectively improving the granular material batching efficiency and further improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of a permanent magnet pre-burned material particle mixing and batching device in an embodiment of the present invention;

[0035] Figure 2 Schematic diagram of a particle inlet hopper and a particle grading screen in an embodiment of the present invention;

[0036] Figure 3 A schematic diagram of a material discharge regulating gate in an embodiment of the present invention;

[0037] Figure 4 Schematic diagram of a particle material dispersing hopper in an embodiment of the present invention;

[0038] Figure 5 A top view of a particle material dispersing hopper in an embodiment of the present invention;

[0039] Figure 6 Flow chart of the control method in an embodiment of the present invention.

[0040] In the figure: 1-1# pellet silo; 2-1# pellet inlet hopper; 3-1# feed regulating gate; 4-1# vibrating feeder; 5-1# pellet feed trough; 6-2# pellet silo; 7-2# pellet feed trough; 8-pellet discharge port; 9-pellet dispersion hopper; 10-3# pellet silo; 11-dry ball mill; 12-pellet grading screen; 13-2# feed regulating gate; 14-2# vibrating feeder; 15-3# feed regulating gate; 16-3# vibrating feeder; 17-bucket elevator; 18-oblique feed hopper. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] It should be pointed out that, according to the needs of implementation, the various steps / components described in this application can be split into more steps / components, and two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present invention.

[0043] Embodiment 1, this embodiment provides a permanent magnet pre-sintered material granular material mixing and batching device, mainly comprising: 1# feeding device, 2# feeding device, bucket elevator, 3# feeding device;

[0044] The 1# feeding device includes a pellet feed hopper, a pellet silo, a feed regulating valve and a vibrating feeder, and a pellet feed trough is arranged at the bottom;

[0045] The 2# feeding device includes a particle hopper, a particle silo, a material discharge regulating valve and a vibrating feeder, and a particle material discharge trough is arranged at the bottom;

[0046] The bucket elevator comprises an oblique feed hopper and a particle material discharge port;

[0047] The 3# feeding device includes a 3# particle silo and a particle dispersion hopper. The particle dispersion hopper is installed on the top of the silo and welded to two channel steels on the silo top. The lower part of the silo is connected to a discharge regulating gate, and a vibrating feeder is connected to the lower part of the silo.

[0048] Furthermore, the 1# and 2# particle hoppers are installed on the vertical top steel plate in the middle of the top of the 1# and 2# particle silos, the feeding port size is Φ1200, a rectangular particle grading screen is placed inside at an inclination of 10°, and the feeding port size is Φ700mm.

[0049] Furthermore, the material discharge regulating gate is installed at the lower part of the particle silo, the regulating gate includes an regulating groove and an regulating plate, and the lower part of the regulating gate is connected to the circular material discharge pipe.

[0050] Furthermore, the vibrating feeder is installed at the bottom of the particle silo, and the two spring rails at the rear of the vibrating feeder are connected to the fixed hook, the fixed hook is connected to the rectangular steel plate by screws, the rectangular steel plate is vertically welded to the trapezoidal side plate, and the trapezoidal side plate is welded to the bottom of the silo. The two spring pull rods at the front of the vibrating feeder are connected to the fixed hook, the fixed hook is connected to the angle steel by screws, the angle steel is welded to the rectangular steel plate, and the rectangular steel plate is welded to the bottom of the silo.

[0051] Furthermore, the pellet feed chute is installed at the bottom of the vibrating feeder. There is a support frame under the chute to fix the chute. The feed end of the chute is connected to the vibrating feeder, and the discharge end is connected to the oblique feed port of the bucket elevator. The pellet feed chute is 230mm wide and 300mm high, and the angle of the chute is >35°.

[0052] Furthermore, the bucket elevator has an oblique feed port connected to a granular material discharge chute, and granular materials from the two discharge chutes can enter the oblique feed port. The oblique feed port is connected to the bucket elevator, and the length of the discharge port allows the granular materials to fall onto a granular material dispersion bucket.

[0053] Furthermore, the particle material dispersing hopper is installed on the top of the 3# particle silo, and the particle material dispersing hopper is welded to two channel steels, and the two sides of the channel steels are welded to the silo top wall. The dispersing hopper is in the shape of a truncated cone, the upper part of the truncated cone is Φ230mm, the lower part is Φ450mm, and the upper part of the truncated cone is welded by steel bars, and the steel bars are spaced 30mm apart.

[0054] Embodiment 2: This embodiment provides a permanent magnet pre-sintered material particle mixing and batching device, such as Figures 1 to 5 As shown, a vibrating feeder is installed at an interval of 100mm at the lower part of the unloading regulating valve, and the vibrating feeder is connected with four tie rod hooks at the lower part of the corresponding particle silo through four front and rear spring tie rod hooks, and the four tie rod hooks are fixed on the angle steel with screws, and the angle steel is welded by two front and rear steel plates, and the other end is welded to the corresponding particle silo;

[0055] Furthermore, the 1# and 2# kiln bags are respectively loaded with pellets and hoisted to the upper part of the corresponding 1# and 2# pellet silos, and screened through the feed pellet hopper and the pellet grading screen. The screened pellets enter the silo, and a slow feeding method is adopted during the process to ensure that the pellets do not leak. Specifically, the frequency of the vibrating feeder can be adjusted to control the pellet feeding amount; corresponding pellet feeding troughs are provided at intervals of 200mm at the lower part of the vibrating feeder, and the pellets can be evenly added to the pellet feeding troughs through the vibrating feeder. The inclination angle of the pellet feeding trough is greater than 35° to ensure that the pellets flow normally in the trough. Four round steels are provided at the front and rear of the trough and are welded to the corresponding pellet silos to fix the pellet feeding trough.

[0056] Furthermore, the 1# pellet material feeding trough 5 and the 2# pellet material feeding trough 7 are installed on the upper part of the lower inclined hopper of the bucket elevator. The pellets are batched in the bucket elevator through the corresponding pellet material feeding troughs. In order to ensure the normal movement of the pellets in the pellet material feeding troughs, the feeding troughs are provided with sufficient width. In this example, the pellet material feeding trough has a width of 230mm and a height of 300mm. The feeding trough is greater than 35°. The pellets move normally to the feeding port of the bucket elevator. Since the pellets from the two silos enter the bucket elevator through the feeding troughs, the bucket elevator is prone to material accumulation, resulting in damage to the belt. In this example, the feeding frequency of the two vibrators is controlled to match the feeding amount with the lifting and transporting amount of the bucket elevator.

[0057] Furthermore, the pellets are uniformly fed into the 1# pellet feed trough 5 and the 2# pellet feed trough 7 through a vibrating feeder, and batched at the feed port of a bucket elevator, and then fed into the 3# pellet silo 10 through the bucket elevator;

[0058] Furthermore, a pellet material discharge port 8 is provided on the upper part of the bucket elevator, and the lower part of the pellet material discharge port 8 is opposite to the 3# pellet material silo 10, and a pellet material dispersion bucket 9 is installed on the upper part of the 3# pellet material silo 10. The pellet material output from the pellet material discharge port 8 of the bucket elevator falls on the pellet material dispersion bucket 9 and is evenly distributed to achieve uniform mixing of the pellet material; in order to avoid dust in the pellet material silo, a stand-alone dust collector is also installed on the top of the pellet material silo.

[0059] Furthermore, the mixed material in the 3# particle silo 10 is uniformly mixed by a vibrating feeder and then enters a dry ball mill for uniform grinding.

[0060] Furthermore, the 1# and 2# pellet silos are in parallel with the 3# pellet silo. For the same material pre-burned materials, the two pre-burned materials corresponding to the 1# and 2# pellet silos are unloaded and cooled in the rotary kiln, and then packaged and transferred to the 1# and 2# pellet silos. Through batch production, the grinding efficiency of the dry tube mill can be fully utilized, and the consistency of the same batch of products can be improved.

[0061] Embodiment 3, based on the same inventive concept, this embodiment also provides a control method for the permanent magnet pre-sintered material granular material mixing batching device as described above, such as Figure 6 As shown, the specific steps include:

[0062] S1, particle grading screen size adjustment: according to the particle size of the pellets to be loaded in the 1# pellet silo and the 2# pellet silo, adjust the screening particle size of the particle grading screen inside the 1# pellet hopper and the 2# pellet hopper to match the particle size of the corresponding pellets to be loaded;

[0063] S2, 1# and 2# material discharge regulating gate opening control: according to the discharge speed required by 1# pellet silo and 2# pellet silo, adjust the opening D1 of 1# material discharge regulating gate and the opening D2 of 2# material discharge regulating gate respectively;

[0064] S3, vibration frequency control of 1# and 2# vibration feeders: the vibration frequency of the 1# vibration feeder W1=K1×D1, the vibration frequency of the 2# vibration feeder W2=K2×D2, wherein K1 and K2 are both discharge amount-vibration frequency conversion coefficients;

[0065] S4, bucket elevator lifting speed adaptive control, the real-time lifting speed V of the bucket elevator satisfies the following formula:

[0066] V=(W1 / K1+W2 / K2)×C / 2

[0067] In the formula, C is the conversion coefficient of discharge volume-lifting speed;

[0068] S5, adjusting the size of the particle dispersion hopper: adjusting the screening particle size of the particle dispersion hopper according to the mixed size of the particle materials after batching, so as to make it compatible with the mixed size of the particle materials;

[0069] S6, joint control of 3# material discharge adjustment gate opening and 3# vibration feeder vibration frequency: according to the grinding speed of the dry ball mill, the 3# material discharge adjustment gate opening and 3# vibration feeder vibration frequency are adjusted in real time to match the discharge speed of the mixed material with the grinding speed.

[0070] Furthermore, all parts involved in this application that are not described in detail are the same as the prior art or are implemented using the prior art.

[0071] In summary:

[0072] 1. The present invention provides a permanent magnet pre-burned material granule material mixing and batching device, which screens the granules through the 1# and 2# granule silos and then transmits them to the 3# granule silo through a bucket elevator. With the reasonable setting of the material discharge adjustment gate, the vibrating feeder, and the granule material dispersion bucket, the granules can be evenly mixed, and the semi-finished granule material batch production of multiple kilns is realized, which solves the problem that the uneven particles need to be screened separately. At the same time, closed-loop production can be realized, and secondary dust at the work site can be reduced;

[0073] 2. The present invention can give full play to the grinding efficiency of the dry tube mill through batch production, and the batch ball mill can effectively improve the consistency of the same batch of products, ensure product quality, and at the same time reduce the number of grinding equipment and greatly reduce production energy consumption;

[0074] 3. The control method of a permanent magnet pre-burned granular material mixing and batching device provided by the present invention can adjust the size of the granular material grading screen to control the feed particle size according to production needs, control the granular material discharge amount by adjusting the frequency of the vibrating feeder, and control the discharge frequency of the two vibrators to match the discharge amount with the lifting and transporting amount of the bucket elevator, thereby effectively improving the granular material batching efficiency and further improving the work efficiency.

[0075] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A permanent magnet pre-sintered material granule mixing and batching device, characterized in that: include: 1# feeding device, 2# feeding device, bucket elevator and 3# feeding device; The 1# feeding device comprises a 1# pellet silo (1), the top and bottom of the 1# pellet silo (1) are respectively provided with a 1# pellet feeding hopper (2) and a 1# material discharge regulating gate (3), and a 1# vibrating feeder (4) is provided below the 1# material discharge regulating gate (3); The 2# feeding device comprises a 2# pellet silo (6), the top and bottom of the 2# pellet silo (6) are respectively provided with a 2# pellet feeding hopper (12) and a 2# material discharge regulating gate (13), and a 2# vibrating feeder (14) is provided below the 2# material discharge regulating gate (13); The output ends of the 1# vibrating feeder (4) and the 2# vibrating feeder (14) are respectively connected to an oblique feed hopper (18) provided at the bottom of a bucket elevator (17) through a 1# pellet material discharge trough (5) and a 2# pellet material discharge trough (7), and the bucket elevator (17) is provided with a pellet material discharge port (8); The 3# feeding device comprises a 3# pellet silo (10), the top and bottom of the 3# pellet silo (10) are respectively provided with a pellet dispersion hopper (9) and a 3# material discharge regulating gate (15), the pellet dispersion hopper (9) is arranged directly below the pellet discharge port (8) of the bucket elevator, a 3# vibrating feeder (16) is arranged below the 3# material discharge regulating gate (15), and a dry ball mill (11) is arranged below the output end of the 3# vibrating feeder (16).

2. A permanent magnet pre-sintered material granule mixing and batching device according to claim 1, characterized in that: The 1# particle inlet hopper (2) and the 2# particle inlet hopper (12) are both provided with a particle grading screen (19) with adjustable sieving particle size, and the particle grading screen (19) is arranged in an inclined manner.

3. The permanent magnet pre-sintered material granule mixing and batching device according to claim 1 is characterized in that: The 1# pellet silo (1) and the 2# pellet silo (6) are arranged side by side at the same height, and the 1# material discharge regulating gate (3), the 1# vibrating feeder (4), the 2# material discharge regulating gate (13), the 2# vibrating feeder (14), the 3# material discharge regulating gate (15) and the 3# vibrating feeder (16) are all connected to corresponding controllers.

4. The permanent magnet pre-sintered material granule mixing and batching device according to claim 1 is characterized in that: The 1# vibrating feeder (4), the 2# vibrating feeder (14), and the 3# vibrating feeder (16) are respectively installed at the bottom of the corresponding particle silo, and each vibrating feeder is connected to a plurality of tie rod hooks welded at the bottom of the corresponding particle silo through a plurality of spring tie rod hooks.

5. The permanent magnet pre-sintered material granule mixing and batching device according to claim 1 is characterized in that: The 1# pellet material feed trough (5) and the 2# pellet material feed trough (7) are both circular tubular feed troughs, the size of which is adapted to the size of the pellets in the corresponding pellet silo, and the 1# pellet material feed trough (5) and the 2# pellet material feed trough (7) are both tilted downward at 35 to 50 degrees and connected to the inclined feed hopper (18) of the bucket elevator.

6. A permanent magnet pre-sintered material granule mixing and batching device according to claim 5, characterized in that: The 1# pellet material discharge trough (5) and the 2# pellet material discharge trough (7) are respectively welded and fixed below the 1# pellet material bin (1) and the 2# pellet material bin (6) through four supporting round steel bars.

7. The permanent magnet pre-sintered material granule mixing and batching device according to claim 1 is characterized in that: The bucket elevator (17) is provided with a speed-adjustable vertical lifting mechanism inside, and the bottom and top of the bucket elevator (17) are respectively provided with an oblique feed hopper (18) and a granular material discharge port (8), and the discharge end of the granular material discharge port (8) is arranged directly above the granular material dispersion hopper (9).

8. The permanent magnet pre-sintered material granule mixing and batching device according to claim 1 is characterized in that: The pellet dispersing hopper (9) is installed on the top of the 3# pellet silo (10), and the ends are respectively welded to two supporting channel steels, and the two supporting channel steels are respectively welded to the two side walls of the 3# pellet silo (10); a dust collector is also installed on the top of the 3# pellet silo (10).

9. A permanent magnet pre-sintered material granule mixing and batching device according to claim 8, characterized in that: The particle material dispersing hopper (9) is specifically in the shape of a truncated cone, and the diameter of the lower part of the truncated cone = the diameter of the upper part of the truncated cone × 2. The screening particle size of the particle material dispersing hopper (9) is adjustable.

10. A control method for the permanent magnet pre-sintered material granule mixing and batching device according to any one of claims 1 to 9, characterized in that: The steps include: S1, particle grading screen size adjustment: according to the particle size of the pellets to be loaded in the 1# pellet silo and the 2# pellet silo, adjust the screening particle size of the particle grading screen inside the 1# pellet hopper and the 2# pellet hopper to match the particle size of the corresponding pellets to be loaded; S2, 1# and 2# material discharge regulating gate opening control: according to the discharge speed required by 1# pellet silo and 2# pellet silo, adjust the opening D1 of 1# material discharge regulating gate and the opening D2 of 2# material discharge regulating gate respectively; S3, vibration frequency control of 1# and 2# vibration feeders: the vibration frequency of the 1# vibration feeder W1=K1×D1, the vibration frequency of the 2# vibration feeder W2=K2×D2, wherein K1 and K2 are both discharge amount-vibration frequency conversion coefficients; S4, bucket elevator lifting speed adaptive control, the real-time lifting speed V of the bucket elevator satisfies the following formula: V=(W1 / K1+W2 / K2)×C / 2 In the formula, C is the conversion coefficient of discharge volume-lifting speed; S5, adjusting the size of the particle dispersion hopper: adjusting the screening particle size of the particle dispersion hopper according to the mixed size of the particle materials after batching, so as to make it compatible with the mixed size of the particle materials; S6, joint control of 3# material discharge adjustment gate opening and 3# vibration feeder vibration frequency: according to the grinding speed of the dry ball mill, the 3# material discharge adjustment gate opening and 3# vibration feeder vibration frequency are adjusted in real time to match the discharge speed of the mixed material with the grinding speed.

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