A preparation method of high-frequency and high-BS manganese-zinc ferrite

Abstract

The present invention relates to the technical field of the preparation of manganese-zinc ferrite, and discloses a preparation method of high-frequency high-BS manganese-zinc ferrite, including S1: mixing the main raw materials evenly, placing them in a sand mill for sand milling, drying; S2: using a pre-burning device to pre-burn the dried mixture in step S1; S3: mixing the pre-burned material with water, and placing it in a sand mill for secondary sand milling; S4: adding glue to the sand-milled slurry, mixing evenly, and performing spray granulation; S5: dry-pressing the obtained particles into a blank; S6: sintering the blank to obtain high-frequency BS manganese-zinc ferrite; by means of a stirring structure to stir the raw materials in a stirring tank, and using a material-lifting structure, the raw materials accumulated at the bottom of the stirring tank can be shoveled up and poured towards the stirring part above on the stirring structure, so that multiple stirring rods on the stirring structure are fully utilized, and the raw materials are thoroughly stirred, improving the stirring work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of the preparation of manganese-zinc ferrite, and particularly relates to a method for preparing high-frequency and high-BS manganese-zinc ferrite. Background Art

[0002] High-frequency and high-BS manganese-zinc ferrite is a manganese-zinc ferrite material with high magnetic permeability and high saturation magnetic induction intensity; it belongs to the spinel structure, mainly composed of iron oxide, manganese oxide and zinc oxide, and is made by ceramic technology;

[0003] In the prior art, when the manganese-zinc ferrite is pre-calcined, by starting the driving motor, the driving motor drives the rotating shaft to rotate, the rotating shaft drives the first fixed sleeve and the second fixed sleeve to rotate, the first fixed sleeve drives the stirring rod to rotate, which is convenient for fully mixing and stirring the raw materials, and is convenient for subsequent processing of the raw materials. The second fixed sleeve drives the connecting rod to rotate, and the connecting rod drives the brush rod to rotate, which is convenient for brushing the inner wall of the stirring barrel, ensuring the cleanliness of the inner wall of the stirring barrel, improving the efficiency and quality of the raw material mixing, and being beneficial to improving the overall quality of the pre-calcination;

[0004] However, during the stirring process, after the raw materials are added to the stirring barrel, the raw materials will accumulate at the bottom of the stirring barrel. When the amount of raw materials added to the stirring barrel is small, the stirring rod above the rotating shaft is not fully utilized, and since the raw materials are piled up together, the stirring work efficiency will be reduced. Therefore, there are areas for improvement. Summary of the Invention

[0005] In order to solve the above-mentioned problems, the present invention provides a method for preparing high-frequency and high-BS manganese-zinc ferrite.

[0006] The method for preparing high-frequency and high-BS manganese-zinc ferrite provided by the present invention adopts the following technical scheme:

[0007] A method for preparing high-frequency and high-BS manganese-zinc ferrite includes the following steps:

[0008] S1: Mix the main raw materials evenly, place them in a sand mill for sanding, and dry.

[0009] S2: Use a pre-calcination device to pre-calcine the dried mixture in step S1.

[0010] S3: Mix the pre-calcined material with water, and place it in a sand mill for secondary sanding.

[0011] S4: Add glue to the sanded slurry, mix evenly, and perform spray granulation.

[0012] S5: Dry-press the prepared particles into a blank.

[0013] S6: Sinter the blank to obtain high-frequency BS manganese zinc ferrite;

[0014] The pre-burning device in the step S2 includes a stirring box and a pre-burning box. The stirring box is fixedly installed on the bottom plate. A bracket is supported at the lower part of the stirring box, and the bracket is fixedly installed on the bottom plate. A stirring structure is arranged in the stirring box. A feeding hopper is installed at the front side above the stirring box, and a rotary cover is screwed tightly at the top end of the feeding hopper. A material lifting structure is arranged on the right inner wall of the stirring box. A first blanking frame is installed at the blanking port below the front side of the stirring box. The first blanking frame is inclined, and one end of the first blanking frame is communicated with the pre-burning box through a first material guiding structure. A heating lamp is installed on the upper inner wall of the stirring box;

[0015] The material lifting structure includes a rotating shaft that rotates through the middle position near the right side of the stirring box. One end of the rotating shaft inserted into the stirring box is fixedly connected with two rotating rods. The two rotating rods are distributed along the radial direction of the rotating shaft. Two connecting rods are connected to the end of the rotating rod away from the rotating shaft. A material lifting frame is installed at one end of the two connecting rods. Arc-shaped shielding edges in the shape of arc plates are arranged on the inner edges of the upper and lower sides of the material lifting frame for blanking. A blanking plate is arranged on the side of the material lifting frame close to the rotating shaft through a rotating structure.

[0016] Preferably, the rotating structure includes a fixed block arranged in the middle of the right side of the material lifting frame. A driving strip passes through the fixed block movably. A U-shaped seat is installed at the middle position near the rotating shaft on the right side of the material lifting frame. A first rotating rod rotates through the U-shaped seat. A first straight gear is fixedly sleeved in the middle of the first rotating rod. Connecting strips are fixedly sleeved at both ends of the first rotating rod. One end of the connecting strip is connected to the blanking plate. Teeth meshing with the first straight gear are arranged on the driving strip. A first driving structure is arranged between the top end of the driving strip and the right inner wall of the stirring box.

[0017] Preferably, the first driving structure includes a first insertion rod connected to the top end of the side of the driving strip away from the material lifting frame. A first arc-shaped groove is opened at the lower part of the right side of the stirring box. A second arc-shaped groove is opened at the upper part of the right side of the stirring box at the position of the first arc-shaped groove. The two ends of the second arc-shaped groove are communicated with the two ends of the first arc-shaped groove through two communication grooves. A retaining ring is rotatably installed at the position of the first arc-shaped groove on the right side of the stirring box. The retaining ring is arranged with the rotating shaft as the axis. A first through groove is opened at the position corresponding to the first insertion rod on the retaining ring. Two fixing rods are connected between the two end walls of the first through groove. A movable block is movably sleeved on the two fixing rods. The first insertion rod fixedly passes through the movable block. One end of the first insertion rod is movably inserted into the second arc-shaped groove. A retaining strip tightly attached to the retaining ring is fixedly sleeved on the first insertion rod.

[0018] Preferably, the stirring structure includes a mounting frame installed at the middle of the upper surface of the stirring tank. A first motor is installed at the middle of the upper inner wall of the mounting frame. The bottom end of the output shaft of the first motor is connected to a second rotating rod that rotatably penetrates into the stirring tank. Multiple stirring rods are connected to the second rotating rod. A transmission structure is provided on the outer surface of the right side of the stirring tank.

[0019] Preferably, the transmission structure includes a fixed seat fixedly installed at the upper part of the right side surface of the stirring tank. A transmission rod rotatably penetrates through the fixed seat. A first bevel gear is fixedly sleeved on the bottom end of the transmission rod. The first bevel gear is meshed with a second bevel gear. The second bevel gear is fixedly sleeved on the other end of the rotating shaft. Belt pulleys are fixedly sleeved on the top end of the transmission rod and the top end of the second rotating rod respectively. A belt is tensioned between the two belt pulleys.

[0020] Preferably, the first material guiding structure includes a feeding cover installed on the top end of the pre-burning tank. A feeding cylinder is installed at the middle of the upper surface of the feeding cover. The feeding cylinder, the feeding cover and the pre-burning tank are communicated with each other. A second feeding frame is closely arranged on the upper inner wall of the feeding cover. A feeding groove is opened at the middle of the lower inner wall of the second feeding frame. The inner walls on both sides of the second feeding frame are inclined surfaces that incline towards the middle. A driving structure is provided on the pre-burning tank.

[0021] Preferably, the driving structure includes two cross bars rotatably connected between the front and rear inner walls of the feeding cover. The two cross bars are distributed at the left and right edges of the upper part inside the feeding cover. Moving blocks are sleeved on both cross bars. One of the cross bars is provided with a thread, and a threaded groove is opened on the corresponding moving block. A second motor is installed on the front side surface of the feeding cover. One end of the output shaft of the second motor is connected to one of the cross bars. A second material guiding structure is provided on the two moving blocks.

[0022] Preferably, the second material guiding structure includes two L-shaped plates connected to the outer sides of the two moving blocks away from each other. A third rotating rod rotatably penetrates through the bottom end of the L-shaped plate. A material guiding frame is installed between the two third rotating rods. The material guiding frame is arranged directly below the feeding groove. A second straight gear is fixedly sleeved on the end of the third rotating rod away from the material guiding frame. A second driving structure is provided between the L-shaped plate and the inner wall of the feeding cover.

[0023] Preferably, the second driving structure includes a second through groove formed in the L-shaped plate. A driving block in an "H" shape is slidably arranged in the second through groove. A second insertion rod is connected to the driving block. A spring is connected between the driving block and one end wall of the second through groove. Guide strips are arranged on the left and right inner walls of the blanking cover. The guide strips are in a parallelogram shape. The second insertion rod is closely attached to the side edge of the guide strip. A transmission strip is connected to the side surface of the driving block. Teeth meshingly connected to the second straight gear are arranged on the transmission strip.

[0024] In summary, the present invention includes the following beneficial technical effects:

[0025] In the present invention, a heating lamp, a stirring structure, and a material lifting structure are arranged on the stirring tank. The raw materials are stirred in the stirring tank by the stirring structure. And by using the material lifting structure, the raw materials accumulated at the bottom of the stirring tank can be shoveled up and poured towards the stirring part above the stirring structure, so that multiple stirring rods on the stirring structure are fully utilized, and the raw materials are thoroughly stirred, improving the stirring work efficiency. Cooperating with the heating lamp, the raw materials during the stirring process can also be preheated. In this way, when the stirred raw materials are fed into the pre-burning box, the pre-burning work efficiency can be improved;

[0026] In the present invention, a rotating structure, a first driving structure, and a transmission structure are provided. Through the transmission structure, while the stirring structure is stirring, the material lifting structure can be driven to automatically rotate the material lifting structure. And under the action of the first driving structure and the rotating structure, when the material lifting frame of the material lifting structure rotates downward, the blanking plate can be automatically closed, so that the material lifting frame can smoothly shovel up the raw materials accumulated at the bottom of the stirring tank. When the material lifting frame rotates upward, the blanking plate can be automatically opened, so as to pour out the raw materials shoveled up in the material lifting frame towards the stirring rod above the stirring structure for stirring;

[0027] In the present invention, a first material guiding structure, a driving structure, a second material guiding structure, and a second driving structure are provided, which can automatically guide the stirred raw materials to various positions in the pre-burning box, thus avoiding the problem that the raw materials fed into the pre-burning box are piled up, resulting in a reduction in the pre-burning work efficiency. Description of the Drawings

[0028] Figure 1 is a schematic diagram of the structure of the present invention;

[0029] Figure 2 is a schematic diagram of the structure at the stirring tank of the present invention;

[0030] Figure 3 is the present invention Figure 2 enlarged view of the structure at A;

[0031] Figure 4Schematic diagram of the internal structure of the mixing tank of the present invention;

[0032] Figure 5 Schematic diagram of the structure at the material lifting frame of the present invention;

[0033] Figure 6 Schematic diagram of the structure at the rear side of the material lifting frame of the present invention;

[0034] Figure 7 For the present invention Figure 6 Enlarged view of the structure at position B of the present invention;

[0035] Figure 8 Schematic diagram of the structure at the retaining ring of the present invention;

[0036] Figure 9 For the present invention Figure 8 Enlarged view of the structure at position C of the present invention;

[0037] Figure 10 Schematic diagram of the structure at the position where the first arc-shaped groove is opened in the mixing tank of the present invention;

[0038] Figure 11 Schematic diagram of the structure at the pre-burning box of the present invention;

[0039] Figure 12 Schematic diagram of the internal structure of the blanking cover of the present invention;

[0040] Figure 13 For the present invention Figure 12 Enlarged view of the structure at position D of the present invention;

[0041] Figure 14 Schematic diagram of the structure at the guiding strip of the present invention;

[0042] Figure 15 Process flow diagram of the present invention.

[0043] Explanation of reference numerals: 1, bottom plate; 2, mixing box; 3, pre-burning box; 4, bracket; 5, first unloading frame; 6, rotating shaft; 7, rotating rod; 8, lifting frame; 9, shielding edge; 10, unloading plate; 11, connecting rod; 12, U-shaped seat; 13, first rotating rod; 14, first straight gear; 15, connecting bar; 16, fixed block; 17, driving bar; 18, first plug rod; 19, stop bar; 20, stop ring; 21, first through groove; 22, fixed rod; 23, movable block; 24, first arc groove; 25, connecting groove; 26, second arc groove; 27, mounting frame; 28, first motor; 29 , the second rotating rod; 30, the stirring rod; 31, the heating lamp; 32, the feeding hopper; 33, the rotating cover; 34, the belt; 35, the transmission rod; 36, the pulley; 37, the fixed seat; 38, the first bevel gear; 39, the second bevel gear; 40, the unloading cover; 41, the unloading barrel; 42, the second motor; 43, the second unloading frame; 44, the unloading chute; 45, the cross bar; 46, the moving block; 47, the L-shaped plate; 48, the third rotating rod; 49, the guiding frame; 50, the second spur gear; 51, the second through slot; 52, the driving block; 53, the spring; 54, the second plug rod; 55, the guide strip; 56, the transmission strip. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-15 The present invention is described in further detail.

[0045] A method for preparing high-frequency and high-BS manganese-zinc ferrite comprises the following steps:

[0046] S1: Mix the main raw materials evenly, place them in a sand mill for sand grinding, and dry them;

[0047] S2: using a pre-burning device to pre-burn the mixed material dried in step S1;

[0048] S3: After mixing the pre-burned material with water, the mixture is placed in a sand mill for secondary sand grinding;

[0049] S4: adding the sand-ground slurry to the glue, mixing evenly, and performing spray granulation;

[0050] S5: dry-pressing the obtained particles to form blanks;

[0051] S6: sintering the blank to obtain high-frequency BS manganese-zinc ferrite;

[0052] The pre-burning device in step S2 includes a stirring tank 2 and a pre-burning tank 3. The stirring tank 2 is fixedly installed on the bottom plate 1. A support 4 is provided under the stirring tank 2, and the support 4 is fixedly installed on the bottom plate 1. A stirring structure is arranged in the stirring tank 2. A feed hopper 32 is installed at the front side above the stirring tank 2. A rotary cover 33 is screwed tightly at the top of the feed hopper 32. A material lifting structure is arranged on the right inner wall of the stirring tank 2. A first blanking frame 5 is installed at the blanking port below the front side of the stirring tank 2. The first blanking frame 5 is inclined. One end of the first blanking frame 5 is communicated with the pre-burning tank 3 through a first material guiding structure. A heating lamp 31 is installed on the upper inner wall of the stirring tank 2;

[0053] The material lifting structure includes a rotating shaft 6 that rotates through the middle position near the right side of the stirring tank 2. One end of the rotating shaft 6 inserted into the stirring tank 2 is fixedly connected with two rotating rods 7. The two rotating rods 7 are distributed along the radial direction of the rotating shaft 6. Two connecting rods 11 are connected to the end of the rotating rod 7 away from the rotating shaft 6. A material lifting frame 8 is installed at one end of the two connecting rods 11. Arc-shaped shielding edges 9 are arranged on both the upper and lower inner edges of the material lifting frame 8 for blanking. A blanking plate 10 is arranged on the side of the material lifting frame 8 close to the rotating shaft 6 through a rotating structure. When stirring the raw materials in the stirring tank 2, the rotating shaft 6 can be rotated to drive the two material lifting frames 8 to rotate through the rotating rods 7 and the connecting rods 11. The downward rotating material lifting frame 8 can scoop up the raw materials piled up at the bottom of the stirring tank 2, so as to lift the scooped-up raw materials to the upper position. During the lifting process, the shielding edge 9 plays a role in blocking the materials. When the material lifting frame 8 rotates to the upper position, the blanking plate 10 can be opened on the material lifting frame 8, so as to pour the raw materials scooped up in the material lifting frame 8 towards the stirring structure, thereby enabling better stirring of the raw materials.

[0054] The rotating structure includes a fixed block 16 arranged in the middle of the right side of the material lifting frame 8. A driving strip 17 movably passes through the fixed block 16. A U-shaped seat 12 is installed at the middle of the right side of the material lifting frame 8 close to the rotating shaft 6. A first rotating rod 13 rotatably passes through the U-shaped seat 12. A first straight gear 14 is fixedly sleeved in the middle of the first rotating rod 13. Connecting strips 15 are fixedly sleeved at both ends of the first rotating rod 13. One end of the connecting strip 15 is connected to the blanking plate 10. Teeth meshing with the first straight gear 14 are arranged on the driving strip 17. A first driving structure is arranged between the top end of the driving strip 17 and the right inner wall of the stirring tank 2;

[0055] The first driving structure includes a first insertion rod 18 connected to the top end of the side of the driving bar 17 away from the material lifting frame 8. A first arc-shaped groove 24 is formed at the lower part of the right side of the mixing tank 2. A second arc-shaped groove 26 is formed above the first arc-shaped groove 24 on the right side of the mixing tank 2. Both ends of the second arc-shaped groove 26 are communicated with both ends of the first arc-shaped groove 24 through two communication grooves 25. A retaining ring 20 is rotatably installed at the position of the first arc-shaped groove 24 on the right side of the mixing tank 2. The retaining ring 20 is arranged with the axis of the rotating shaft 6. A first through groove 21 is formed in the retaining ring 20 corresponding to the position of the first insertion rod 18. Two fixing rods 22 are connected between the two end walls of the first through groove 21. A movable block 23 is movably sleeved on the two fixing rods 22. The first insertion rod 18 fixedly passes through the movable block 23. One end of the first insertion rod 18 movably inserts into the second arc-shaped groove 26. A retaining strip 19 that tightly adheres to the retaining ring 20 is fixedly sleeved on the first insertion rod 18. When the rotating shaft 6 rotates, it drives one end of the first insertion rod 18 to slide in the first arc-shaped groove 24 on the inner wall of the mixing tank 2. At this time, the blanking plate 10 on the material lifting frame 8 is in a closed state, so that the rotated material lifting frame 8 can smoothly shovel up the raw materials. When the material lifting frame 8 shovels up the raw materials and rotates upward, it drives one end of the first insertion rod 18 to slide from one of the communication grooves 25 into the second arc-shaped groove 26. At this time, the first insertion rod 18 drives the driving bar 17 to move upward on the fixed block 16, and drives the first rotating rod 13 to rotate through the first straight gear 14, and automatically opens the blanking plate 10 under the material lifting frame 8 through the connecting strip 15, so as to automatically pour the raw materials shoveled up in the material lifting frame 8 onto the mixing structure for mixing;

[0056] The mixing structure includes a mounting frame 27 installed in the middle of the upper surface of the mixing tank 2. A first motor 28 is installed in the middle of the upper inner wall of the mounting frame 27. The bottom end of the output shaft of the first motor 28 is connected with a second rotating rod 29 that rotates and inserts into the mixing tank 2. A plurality of mixing rods 30 are connected to the second rotating rod 29. A transmission structure is arranged on the outer surface of the right side of the mixing tank 2. When the first motor 28 is started and drives the second rotating rod 29 and the mixing rods 30 to rotate as a whole, the raw materials can be mixed in the mixing tank 2;

[0057] The transmission structure includes a fixed seat 37 fixedly installed at the upper part of the right side of the mixing tank 2. A transmission rod 35 rotatably passes through the fixed seat 37. A first bevel gear 38 is fixedly sleeved at the bottom end of the transmission rod 35. The first bevel gear 38 is meshed and connected with a second bevel gear 39. The second bevel gear 39 is fixedly sleeved on the other end of the rotating shaft 6. Pulley wheels 36 are fixedly sleeved on the top end of the transmission rod 35 and the top end of the second rotating rod 29 respectively. A belt 34 is tightened between the two pulley wheels 36. The rotation of the second rotating rod 29 drives the transmission rod 35 to rotate through the pulley wheels 36 and the belt 34, and automatically drives the rotating shaft 6 to rotate through the first bevel gear 38 and the second bevel gear 39 for material shoveling work.

[0058] The first feeding structure includes a blanking cover 40 installed on the top end of the pre-burning box 3. In the middle of the upper surface of the blanking cover 40, a blanking cylinder 41 is installed. The blanking cylinder 41, the blanking cover 40, and the pre-burning box 3 are interconnected. A second blanking frame 43 is tightly attached to the inner upper wall of the blanking cover 40. A blanking groove 44 is opened in the middle of the lower inner wall of the second blanking frame 43. The inner walls on both sides of the second blanking frame 43 are inclined surfaces that slope towards the middle. A driving structure is provided on the pre-burning box 3;

[0059] The driving structure includes two cross bars 45 rotatably connected between the inner walls on the front and rear sides of the blanking cover 40. The two cross bars 45 are distributed at the left and right edges above the inside of the blanking cover 40. Moving blocks 46 are sleeved on both cross bars 45. One of the cross bars 45 is provided with a thread, and a thread groove is opened on the corresponding moving block 46. A second motor 42 is installed on the front side of the blanking cover 40. One end of the output shaft of the second motor 42 is connected to one of the cross bars 45. A second feeding structure is provided on the two moving blocks 46;

[0060] The second feeding structure includes two L-shaped plates 47 connected to the mutually remote side surfaces of the two moving blocks 46. A third rotating rod 48 rotatably passes through the bottom ends of the L-shaped plates 47. A feeding frame 49 is installed between the two third rotating rods 48. The feeding frame 49 is arranged directly below the blanking groove 44. A second straight gear 50 is fixedly sleeved on the end of the third rotating rod 48 away from the feeding frame 49. A second driving structure is provided between the L-shaped plate 47 and the inner wall of the blanking cover 40;

[0061] The second driving structure includes a second through groove 51 formed in the L-shaped plate 47. A driving block 52 in an "H" shape is slidably arranged in the second through groove 51. A second insertion rod 54 is connected to the driving block 52. A spring 53 is connected between the driving block 52 and one end wall of the second through groove 51. Guide strips 55 are arranged on the inner walls on the left and right sides of the blanking cover 40. The guide strips 55 are in a parallelogram shape. The second insertion rod 54 is closely attached to the side edge of the guide strip 55. A transmission strip 56 is connected to the side surface of the driving block 52. Teeth meshingly connected to the second straight gear 50 are arranged on the transmission strip 56. The raw materials after being stirred in the stirring tank 2 are fed from the first blanking frame 5 into the blanking cylinder 41, and then from the blanking cylinder 41 into the blanking cover 40, and then enter the second blanking frame 43. At this time, the second motor 42 is started to drive the threaded cross bar 45 to rotate. The moving block 46 moves back and forth on the rotating cross bar 45, driving the second blanking frame 43 to move back and forth, so as to feed the stirred raw materials into the pre-burning box 3, avoiding the problem that the raw materials accumulate in the pre-burning box 3 and reducing the pre-burning work efficiency. Moreover, the movement of the moving block 46, in cooperation with the elastic force of the spring 53, drives the second insertion rod 54 to move around the side surface of the guide strip 55, thereby driving the driving block 52 and the transmission strip 56 as a whole to move up and down on the L-shaped plate 47. In cooperation with the second straight gear 50, it drives the material guiding frame 49 to swing back and forth below the blanking groove 44, further guiding the materials to various positions in the pre-burning box 3, so that the raw materials are completely spread out in the pre-burning box 3, better heated, and the pre-burning work is carried out, improving the pre-burning work efficiency.

[0062] In the actual operation process, first, turn down the rotary cover 33 from the top of the feed hopper 32, add the raw materials to be mixed from the feed hopper 32 into the mixing tank 2, tighten the rotary cover 33 on the rotary cover 33 again, start the heating lamp 31, and preheat the raw materials in the mixing tank 2. Then start the first motor 28 on the installation frame 27 to drive the second rotating rod 29 and the stirring rod 30 to rotate integrally in the mixing tank 2 to carry out the stirring work on the raw materials. Moreover, the rotation of the second rotating rod 29 drives the transmission rod 35 to rotate through the belt 34 and the pulley 36, and drives the rotating shaft 6 to rotate through the first bevel gear 38 and the second bevel gear 39. Through the rotating rod 7 and the connecting rod 11, the two lifting frames 8 are driven to rotate. When the lifting frame 8 is turned down, one end of the first insertion rod 18 is driven to slide in the first arc-shaped groove 24, and the blanking plate 10 on the lifting frame 8 is in a closed state. In this way, the turned-down lifting frame 8 can smoothly shovel up the raw materials piled up at the bottom of the mixing tank 2. When the lifting frame 8 rotates upward, the lifted raw materials are carried by the lifting frame 8. And when the rotating shaft 6 drives one end of the first insertion rod 18 to slide into the second arc-shaped groove 26, the driving strip 17 is driven to move downward on the fixed block 16 through the first insertion rod 18, and the first rotating rod 13 is driven to rotate through the first spur gear 14, so as to open the blanking plate 10 below the lifting frame 8. The raw materials shoveled up in the lifting frame 8 fall towards the stirring rod 30 above, so that while making full use of the multiple stirring rods 30 on the second rotating rod 29, the stirring work efficiency is also improved. And through the preliminary preheating work on the raw materials in the mixing tank 2 by the heating lamp 31, after stirring, the raw materials in the mixing tank 2 are discharged from the first blanking frame 5 into the blanking cylinder 41, and are discharged from the blanking cylinder 41 into the blanking cover 40, and then enter the second blanking frame 43. At this time, start the second motor 42 to drive the threaded cross bar 45 to rotate, and the moving block 46 moves back and forth on the rotating cross bar 45, driving the second blanking frame 43 to move back and forth, so as to discharge the stirred raw materials into the pre-burning box 3, avoiding the problem that the raw materials are piled up in the pre-burning box 3 and reducing the pre-burning work efficiency. Moreover, the movement of the moving block 46, combined with the elasticity of the spring 53, drives the second insertion rod 54 to move around the side of the guiding strip 55, so as to drive the driving block 52 and the transmission strip 56 to move up and down integrally on the L-shaped plate 47, and cooperate with the second spur gear 50 to drive the material guiding frame 49 to swing back and forth below the blanking groove 44, further guiding the materials to various positions in the pre-burning box 3, so that the raw materials are completely spread out in the pre-burning box 3, better heated, and the pre-burning work is carried out, improving the pre-burning work efficiency.

[0063] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A method for preparing high-frequency and high-BS manganese-zinc ferrite, characterized in that: The following steps are involved: S1: Mix the main raw materials evenly, place them in a sand mill for sand grinding, and dry them; S2: using a pre-burning device to pre-burn the mixed material dried in step S1; S3: After mixing the pre-burned material with water, the mixture is placed in a sand mill for secondary sand grinding; S4: adding the sand-ground slurry to the glue, mixing evenly, and performing spray granulation; S5: dry-pressing the obtained particles to form blanks; S6: sintering the blank to obtain high-frequency BS manganese-zinc ferrite; The pre-burning device in step S2 comprises a stirring box (2) and a pre-burning box (3), wherein the stirring box (2) is fixedly mounted on the bottom plate (1), a bracket (4) is supported at the bottom of the stirring box (2), and the bracket (4) is fixedly mounted on the bottom plate (1), a stirring structure is arranged inside the stirring box (2), a feed hopper (32) is arranged at the front side of the top of the stirring box (2), a rotating cover (33) is tightened at the top of the feed hopper (32) by means of a thread, a material lifting structure is arranged on the right inner wall of the stirring box (2), a first material discharge frame (5) is arranged at the material discharge opening below the front side of the stirring box (2), the first material discharge frame (5) is arranged obliquely, one end of the first material discharge frame (5) is connected to the pre-burning box (3) through the first material introduction structure, and a heating lamp (31) is arranged on the upper inner wall of the stirring box (2); The material lifting structure comprises a rotating shaft (6) which rotates and passes through the right side surface of the mixing box (2) near the middle position, one end of the rotating shaft (6) inserted into the mixing box (2) is fixedly connected to two rotating rods (7), the two rotating rods (7) are distributed along the radial direction of the rotating shaft (6), the end of the rotating rod (7) away from the rotating shaft (6) is connected to two connecting rods (11), one end of the two connecting rods (11) is installed with a material lifting frame (8), the inner edges of the upper and lower sides of the material lifting frame (8) are provided with arc-shaped shielding edges (9), and the material lifting frame (8) is provided with a material discharge plate (10) through a rotating structure at a side surface of the rotating shaft (6); The rotating structure comprises a fixed block (16) arranged in the middle of the right side of the lifting frame (8), a driving strip (17) movably passing through the fixed block (16), a U-shaped seat (12) is installed in the middle of the right side of the lifting frame (8) close to the rotating shaft (6), a first rotating rod (13) rotatably passes through the U-shaped seat (12), a first straight gear (14) is fixedly sleeved in the middle of the first rotating rod (13), connecting strips (15) are fixedly sleeved on both ends of the first rotating rod (13), one end of the connecting strip (15) is connected to the unloading plate (10), and teeth are arranged on the driving strip (17) that mesh with the first straight gear (14), and a first driving structure is arranged between the top end of the driving strip (17) and the right inner wall of the mixing box (2); The first driving structure comprises a first plug rod (18) connected to the top of a side surface of the driving bar (17) away from the material lifting frame (8); a first arc-shaped groove (24) is provided at the lower part of the right side surface of the mixing box (2); a second arc-shaped groove (26) is provided at the upper part of the right side surface of the mixing box (2) of the first arc-shaped groove (24); two ends of the second arc-shaped groove (26) are connected to two ends of the first arc-shaped groove (24) via two connecting grooves (25); a retaining ring (20) is rotatably installed on the right side surface of the mixing box (2) at the position of the first arc-shaped groove (24); the ...; the retaining ring (20) is rotatably installed on the right side surface of the mixing box (2); the retaining ring (20) is rotatably installed on the right side surface of the mixing box (2); the retaining ring (20 The ring (20) and the rotating shaft (6) are arranged as an axis, a first through groove (21) is opened on the retaining ring (20) at a position corresponding to the first insertion rod (18), two fixed rods (22) are connected between the groove walls at both ends of the first through groove (21), and a movable block (23) is movably sleeved on the two fixed rods (22), the first insertion rod (18) is fixedly passed through the movable block (23), one end of the first insertion rod (18) is movably inserted into the second arc groove (26), and a retaining strip (19) is fixedly sleeved on the first insertion rod (18) and is tightly attached to the retaining ring (20).

2. The method for preparing a high-frequency and high-BS manganese-zinc ferrite according to claim 1, characterized in that: The stirring structure comprises a mounting frame (27) mounted in the middle of the upper part of the stirring box (2); a first motor (28) is mounted in the middle of the upper inner wall of the mounting frame (27); a second rotating rod (29) rotatably inserted into the stirring box (2) is connected to the bottom end of the output shaft of the first motor (28); a plurality of stirring rods (30) are connected to the second rotating rod (29); and a transmission structure is arranged on the outer side of the right side of the stirring box (2).

3. The method for preparing a high frequency and high BS manganese-zinc ferrite according to claim 2, characterized in that: The transmission structure comprises a fixed seat (37) fixedly mounted above the right side surface of the mixing box (2), a transmission rod (35) rotatably passing through the fixed seat (37), a first bevel gear (38) fixedly sleeved on the bottom end of the transmission rod (35), the first bevel gear (38) being meshingly connected with a second bevel gear (39), the second bevel gear (39) being fixedly sleeved on the other end of the rotating shaft (6), a pulley (36) fixedly sleeved on the top end of the transmission rod (35) and the top end of the second rotating rod (29), a belt (34) being tightly sleeved between the two pulleys (36).

4. The method for preparing a high frequency and high BS manganese-zinc ferrite according to claim 1, characterized in that: The first material introduction structure comprises a material discharge cover (40) installed on the top of the pre-burning box (3), a material discharge barrel (41) is installed in the middle of the upper part of the material discharge cover (40), the material discharge barrel (41), the material discharge cover (40) and the pre-burning box (3) are connected to each other, a second material discharge frame (43) is closely arranged on the upper inner wall of the material discharge cover (40), a material discharge groove (44) is opened in the middle of the lower inner wall of the second material discharge frame (43), and the inner walls on both sides of the second material discharge frame (43) are inclined surfaces inclined toward the middle, and a driving structure is arranged on the pre-burning box (3).

5. The method for preparing high frequency and high BS manganese zinc ferrite according to claim 4, characterized in that: The driving structure comprises two cross bars (45) which are rotatably connected between the inner walls of the front and rear sides of the material discharging cover (40), the two cross bars (45) being distributed at the left and right edges of the upper part of the material discharging cover (40), and moving blocks (46) being sleeved on the two cross bars (45), one of the cross bars (45) being provided with a thread, and the corresponding moving block (46) being provided with a thread groove, and a second motor (42) being installed on the front side surface of the material discharging cover (40), one end of the output shaft of the second motor (42) being connected to one of the cross bars (45), and a second material guiding structure being provided on the two moving blocks (46).

6. The method for preparing high-frequency and high-BS manganese-zinc ferrite according to claim 5, characterized in that: The second material guiding structure comprises two L-shaped plates (47) connected to two moving blocks (46) at a side away from each other, a third rotating rod (48) is rotatably passed through the bottom end of the L-shaped plate (47), a material guiding frame (49) is installed between the two third rotating rods (48), the material guiding frame (49) is arranged directly below the material discharge chute (44), a second spur gear (50) is fixedly sleeved on one end of the third rotating rod (48) away from the material guiding frame (49), and a second driving structure is arranged between the L-shaped plate (47) and the inner wall of the material discharge cover (40).

7. The method for preparing high frequency and high BS manganese zinc ferrite according to claim 6, characterized in that: The second driving structure comprises a second through slot (51) formed on the L-shaped plate (47); a driving block (52) in the shape of an "H" is slidably arranged in the second through slot (51); a second insertion rod (54) is connected to the driving block (52); a spring (53) is connected between the driving block (52) and a groove wall at one end of the second through slot (51); guide bars (55) are arranged on the inner walls on both sides of the left and right sides of the unloading cover (40); the guide bars (55) are in the shape of a parallelogram; the second insertion rod (54) is closely attached to the side edge of the guide bar (55); a transmission bar (56) is connected to the side surface of the driving block (52); and the transmission bar (56) is provided with teeth meshing with the second spur gear (50).

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