CN111768966B - Pretreatment device and pretreatment method for soft magnetic ferrite production material - Google Patents
Pretreatment device and pretreatment method for soft magnetic ferrite production material Download PDFInfo
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- CN111768966B CN111768966B CN202010436728.4A CN202010436728A CN111768966B CN 111768966 B CN111768966 B CN 111768966B CN 202010436728 A CN202010436728 A CN 202010436728A CN 111768966 B CN111768966 B CN 111768966B
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- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
Abstract
The invention relates to the technical field of soft magnetic ferrite production equipment, and provides a pretreatment device and a pretreatment method for a material for producing soft magnetic ferrite, aiming at solving the problem that the conventional soft magnetic ferrite material needs to be pretreated before being molded by a mold so as to ensure the component proportion and uniform mixing of the materials. A material pretreatment device for soft magnetic ferrite production comprises a plurality of material bins, wherein the material bins are connected with a rough mixing mechanism through material suction pipelines, the output end of the rough mixing mechanism is connected with a crushing mechanism through a transmission pipeline I, a material pump II is installed on the transmission pipeline I, and the output end of the crushing mechanism is connected with a fine mixing preheating mechanism through the transmission pipeline II; coarse mixing mechanism includes the coarse mixing tank, installs compounding motor I on the roof of coarse mixing tank, installs the material mixing axle on the output of compounding motor I. The method is particularly suitable for the production of the soft magnetic ferrite, and has higher social use value and application prospect.
Description
Technical Field
The invention relates to the technical field of soft magnetic ferrite production equipment, in particular to a pretreatment device and a pretreatment method for materials for producing soft magnetic ferrites.
Background
Magnetic core refers to a sintered magnetic metal oxide composed of various iron oxide mixtures. Ferrite is a metal oxide having ferromagnetism. In terms of electrical characteristics, ferrite has a much higher resistivity than metal and alloy magnetic materials, and also has a higher dielectric property, and the magnetic properties of ferrite also show a higher magnetic permeability at high frequencies. Therefore, ferrite has become a non-metallic magnetic material with wide application in the high-frequency weak-current field.
Manganese-zinc ferrite and nickel-zinc ferrite are typical magnetic core body materials, and the manganese-zinc ferrite has the characteristics of high magnetic permeability and high magnetic flux density and has the characteristic of lower loss; the nickel-zinc ferrite has the characteristics of extremely high resistivity, low magnetic permeability of less than several hundred, and the like. Ferrite cores are used in coils and transformers for various electronic devices.
In order to meet the requirements of the switching power supply for improving efficiency and reducing size and weight, a transformer core with high magnetic flux density, high frequency and low loss is needed. Although high-performance amorphous soft magnetic alloys compete, the soft magnetic ferrite material is still the best choice from cost performance; particularly in the high-frequency field of 100kHz to 1MHz, the novel low-loss high-frequency power ferrite material has more unique advantages.
When magnetization occurs at Hc of not more than 1000A/m, such a material is called a soft-magnetic body. The soft magnetic ferrite is a ferrimagnetic oxide with Fe2O3 as a main component and is produced by a powder metallurgy method. The existing soft magnetic ferrite material needs to be pretreated before being molded through a mold so as to ensure the proportion and uniform mixing of the components of the materials.
Therefore, a pretreatment device and a pretreatment method for materials for producing the soft magnetic ferrite are provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a pretreatment device and a pretreatment method for materials for producing soft magnetic ferrite, which overcome the defects of the prior art, have reasonable design and compact structure and aim to solve the problem that the materials of the prior soft magnetic ferrite need to be pretreated before being molded by a mold so as to ensure the component proportion and uniform mixing of the materials.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a material pretreatment device for soft magnetic ferrite production comprises a plurality of material bins, wherein the material bins are connected with a rough mixing mechanism through material suction pipelines, the output end of the rough mixing mechanism is connected with a crushing mechanism through a transmission pipeline I, a material pump II is installed on the transmission pipeline I, and the output end of the crushing mechanism is connected with a fine mixing preheating mechanism through the transmission pipeline II;
the rough mixing mechanism comprises a rough mixing tank, a mixing motor I is mounted on the top wall of the rough mixing tank, a mixing shaft is mounted at the output end of the mixing motor I, the lower end of the mixing shaft extends to the inner cavity of the rough mixing tank and is provided with a spiral mixing column, the lower end of the spiral mixing column is rotatably mounted at the upper end of a bracket, the bracket is fixedly mounted on the inner wall of the rough mixing tank, a plurality of spiral arms are horizontally mounted on a section of the mixing shaft, which is positioned in the inner cavity of the rough mixing tank, at the upper side of the free end of each spiral arm, a stirring vertical rod is mounted at the lower side of the free end of each spiral arm, and a plurality of stirring support rods are horizontally mounted on the stirring vertical rod;
the crushing mechanism comprises a case which is horizontally arranged, a spiral transmission column is rotatably arranged in the case, the shaft end of the spiral transmission column extends to the outer cavity of the case and is arranged at the output end of a driving motor, the driving motor is fixedly arranged on the side wall of the case, and a plurality of crushing cutters are arranged on the annular side wall of the spiral transmission column along the spiral extending direction of the spiral transmission column;
the fine mixing preheating mechanism comprises a fine mixing tank, an annular electric heating plate extending along the inner wall of the fine mixing tank is arranged in the middle of the inner cavity of the fine mixing tank, a partition plate is horizontally arranged at the upper part of the inner cavity of the fine mixing tank, a main shaft is vertically and rotatably inserted in the middle of the partition plate, a plurality of stirring impellers are fixedly sleeved on one end of the main shaft, which is positioned at the lower end of the partition plate, the upper end of the main shaft extends to the outer cavity of the fine mixing tank and is arranged at the output end of a mixing motor II, the mixing motor II is fixedly arranged on the top wall of the fine mixing tank, a section of the main shaft, which is positioned at the upper end of the partition plate, is sleeved with a driving chain wheel, the driving chain wheel is connected with two driven chain wheels through a chain, a branch shaft is inserted in the middle of the driven chain wheel, the lower end of the branch shaft penetrates through the partition plate and is provided with a bulk material impeller, the two bulk material impellers have a height difference of-cm, a discharging pipe is arranged on the bottom wall of the fine mixing tank in a penetrating way, and a discharging valve is arranged on the discharging pipe;
and an adhesive adding port is formed in the top wall of the fine mixing tank.
Preferably, still be equipped with screening mechanism on rubbing crusher constructs's the output, screening mechanism is including installing the collecting hopper on quick-witted case output, and the lower extreme of collecting hopper is inserted and is established on the roof of screening case, and the sieve tray is installed in the slope in the inner chamber of screening case, and the middle part of sieve tray inlays and be equipped with the screen cloth, and vibrating motor is installed to the lower extreme of sieve tray, and the below of sieve tray is equipped with the guide plate that the slope set up, and the input of transmission pipeline II is inserted and is established on the lateral wall that corresponds the lower side position of guide plate of screening case.
Preferably, a material return pipe is arranged on the side wall of the sieving box corresponding to the lower side of the sieving plate in a through mode, the material return pipe is connected with the transmission pipeline I in a through mode, and a material pump III is arranged on the material return pipe.
Preferably, the material suction pipeline comprises branch pipes which are respectively inserted into the inner cavities of the material bins, the branch pipes are arranged on the same main pipe in a penetrating manner, and the material pump I and the metering pump are arranged on the branch pipes.
Preferably, a control valve I is installed on one side, close to the output end of the rough mixing tank, of the transmission pipeline I.
Preferably, a material supplementing bin is penetratingly arranged on the top wall of one side, close to the transmission pipeline I, of the case, a control valve II is arranged at the output end of the material supplementing bin, and a bin door for feeding materials is arranged at the upper end of the material supplementing bin.
Preferably, the material bin is of an open structure with an opening at the upper end, and a material level meter is arranged on the material bin.
The invention also provides a material pretreatment method for producing the soft magnetic ferrite, which comprises the following steps:
s1, pumping the materials in different material bins according to the proportion and inputting the materials into a rough mixing mechanism for rough mixing;
s2, after coarse mixing is completed, crushing and screening the output materials through a crushing mechanism and a screening mechanism;
s3, inputting the screened materials into a fine mixing and preheating mechanism for fine mixing and preheating;
s4, after the fine mixing and preheating are completed, outputting to obtain a pretreated material;
in step S2, the sieved coarse material is returned through a material return pipe and a material pump iii and then crushed.
Preferably, in step S3, an adhesive is added through an adhesive adding port on the tank body of the fine mixing tank, and the adhesive is an epoxy resin solution.
Preferably, the epoxy resin solution is prepared by adding 30 parts by weight of epoxy resin to 100 parts by weight of an anhydrous ethanol solvent to prepare an epoxy resin solution.
(III) advantageous effects
The embodiment of the invention provides a pretreatment device and a pretreatment method for a material for producing a soft magnetic ferrite, which have the following beneficial effects:
1. through the integrated configuration of rough mixing mechanism and smart muddy preheating mechanism, the effectual component homogeneous mixing that has guaranteed the soft magnetic ferrite material combines the interpolation of preheating part, can improve the temperature of soft magnetic ferrite material, and abundant and the combination of binder, the soft magnetic ferrite material after the preliminary treatment is accomplished accords with the follow-up shaping and the sintering processing of magnetic core.
2. Through the combined structure of the material bins and the material suction pipeline, the materials in the material bins are effectively sucked according to the proportion of the components, manual proportion feeding is not needed, and the preprocessing accuracy of the soft magnetic ferrite material is greatly improved.
3. Through the integrated configuration of rubbing crusher structure and screening mechanism, the material input machine incasement after the coarse mixing, the material after the coarse mixing of cooperation a plurality of crushing sword is smashed the transmission to guarantee the particle diameter size of material, the coarse mixing material after smashing is collected and is filtered the screening through the screen cloth to the inner chamber of screening case, combines vibrating motor's start-up, improves the efficiency of screening, guarantees that the particle diameter of material accords with the production of magnetic core.
4. Through the combined structure of the material return pipe and the material pump III, the coarse materials screened out can be matched to return to the crushing mechanism again for crushing again, and the production quality of the soft magnetic ferrite is ensured.
Drawings
The above characteristics, technical features, advantages and implementation manners of the pretreatment apparatus and pretreatment method for soft magnetic ferrite production materials will be further described in the following detailed description of preferred embodiments in a clearly understandable manner with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a combined structure of a material bin and a material suction pipeline in the invention;
FIG. 3 is a top view of the combination structure of the material bin and the material suction pipeline in the present invention;
FIG. 4 is a schematic structural diagram of the rough mixing mechanism of the present invention;
FIG. 5 is a schematic view of the combination of the crushing mechanism and the sieving mechanism in the present invention;
FIG. 6 is a schematic structural diagram of the fine mixing and preheating mechanism of the present invention.
In the figure: the device comprises a material bin 1, a material level meter 101, a material suction pipeline 2, a branch pipe 21, a main pipe 22, a material pump I23, a metering pump 24, a rough mixing mechanism 3, a rough mixing tank 31, a stirring support rod 32, a material mixing motor I33, a material mixing shaft 34, a spiral material mixing column 35, a bracket 36, a rotary arm 37, a stirring vertical rod 38, a transmission pipeline I4, a material pump II 41, a control valve I42, a crushing mechanism 5, a case 51, a spiral transmission column 52, a crushing cutter 53, a driving motor 54, a material supplementing bin 55, a control valve II 56, a bin door 57, a screening mechanism 6, a material collecting bin 61, a screening bin 62, a screening disc 63, a screen 64, a vibrating motor 65, a guide plate 66, a material return pipe 7, a material pump III, a transmission pipeline II 8, a material pump IV 81, a fine mixing preheating mechanism 9, a fine mixing tank 91, a separation plate 92, a main shaft 93, a stirring impeller 94, a material mixing motor 95, a driving chain wheel 96, a chain 97, a driven chain wheel 98, a chain wheel, A branch shaft 99, a bulk material impeller 910, an annular electric heating plate 911, a discharge pipe 912, a discharge valve 913, and an adhesive addition port 914.
Detailed Description
The invention will be further illustrated with reference to the following figures 1-6 and examples:
example 1
A material pretreatment device for soft magnetic ferrite production comprises a plurality of material bins 1, wherein the material bins 1 are connected with a coarse mixing mechanism 3 through material suction pipelines 2, the output end of the coarse mixing mechanism 3 is connected with a crushing mechanism 5 through a transmission pipeline I4, a material pump II 41 is installed on the transmission pipeline I4, and the output end of the crushing mechanism 5 is connected with a fine mixing preheating mechanism 9 through a transmission pipeline II 8;
in this embodiment, as shown in fig. 1 and 4, the rough mixing mechanism 3 includes a rough mixing tank 31, a mixing motor i 33 is installed on a top wall of the rough mixing tank 31, a mixing shaft 34 is installed on an output end of the mixing motor i 33, a lower end of the mixing shaft 34 extends into an inner cavity of the rough mixing tank 31 and is installed with a spiral mixing column 35, a lower end of the spiral mixing column 35 is rotatably installed at an upper end of a bracket 36, the bracket 36 is fixedly installed on an inner wall of the rough mixing tank 31, a plurality of spiral arms 37 are horizontally installed on a section of the mixing shaft 34 located in the inner cavity of the rough mixing tank 31, a stirring vertical rod 38 is installed at a lower side of a free end of each spiral arm 37, a plurality of stirring support rods 32 are horizontally installed on the stirring vertical rod 38, the materials after being mixed are input into the rough mixing tank 31, then, the mixing motor i 33 is started to drive the spiral mixing column 35 at the lower end of the mixing shaft 34 to rotate, and, meanwhile, the plurality of the spiral arms 37 are combined, the stirring support rods 32 synchronously rotate to mix materials, so that the coarse mixing efficiency is improved, and the mixing of the material components is ensured;
in this embodiment, as shown in fig. 5, the crushing mechanism 5 includes a case 51 horizontally disposed, a spiral transmission column 52 is rotatably mounted in the case 51, a shaft end of the spiral transmission column 52 extends to an outer cavity of the case 51 and is mounted at an output end of a driving motor 54, the driving motor 54 is fixedly mounted on a side wall of the case 51, a plurality of crushing knives 53 are mounted on an annular side wall of the spiral transmission column 52 along a spiral extending direction of the spiral transmission column 52, the coarsely mixed material is input into the case 51, the driving motor 54 is started to drive the spiral transmission column 52 to rotate, and the transmitted coarsely mixed material is crushed by matching with the arrangement of the plurality of crushing knives 53, so as to ensure that a particle size of the material conforms to the production of a magnetic core;
in this embodiment, as shown in fig. 6, the fine mixing preheating mechanism 9 includes a fine mixing tank 91, an annular electric heating plate 911 extending along an inner wall of the fine mixing tank 91 is installed in a middle portion of an inner cavity of the fine mixing tank 91, a partition plate 92 is horizontally installed on an upper portion of the inner cavity of the fine mixing tank 91, a main shaft 93 is vertically inserted in a middle portion of the partition plate 92 in a rotating manner, a plurality of stirring impellers 94 are fixedly sleeved on one end of the main shaft 93 located at a lower end of the partition plate 92, an upper end of the main shaft 93 extends to an outer cavity of the fine mixing tank 91 and is installed at an output end of a mixing motor ii 95, the mixing motor ii 95 is fixedly installed on a top wall of the fine mixing tank 91, a section of the main shaft 93 located at an upper end of the partition plate 92 is sleeved with a driving sprocket 96, the driving sprocket 96 is connected with two driven sprockets 98 through a chain 97, a branch shaft 99 is inserted in the middle portion of the driven sprocket 98, a lower end of the branch shaft 99 penetrates through the partition plate 92 and is installed with a bulk impeller 910, the height difference of the two bulk material impellers 910 is 20-34 cm, a discharging pipe 912 is installed on the bottom wall of the fine mixing tank 91 in a penetrating mode, a discharging valve 913 is installed on the discharging pipe 912, the screened materials enter the fine mixing tank 91, a mixing motor II 95 is started, a main shaft 93 drives a plurality of stirring impellers 94 to synchronously rotate, fine mixing of the materials is carried out, the two bulk material impellers 910 with different heights are driven to rotate and mix materials by matching with a transmission mechanism of a driving chain wheel 96, a chain 97 and two driven chain wheels 98, the mixing effect is improved, and the mixing materials are preheated simultaneously by matching with the arrangement of an annular electric heating plate 911 so as to ensure forming and sintering of the soft magnetic ferrite materials after proportioning is finished;
and an adhesive adding port 914 is arranged on the top wall of the fine mixing tank 91 and is used for adding an adhesive to ensure the molding of the soft magnetic ferrite material.
In this embodiment, as shown in fig. 1 and 5, a screening mechanism 6 is further disposed on an output end of the crushing mechanism 5, the screening mechanism 6 includes a material collecting hopper 61 installed on an output end of the case 51, a lower end of the material collecting hopper 61 is inserted into a top wall of the screening box 62, a screen tray 63 is installed in an inner cavity of the screening box 62 in an inclined manner, a screen mesh 64 is embedded in a middle portion of the screen tray 63, a vibrating motor 65 is installed at a lower end of the screen tray 63, a guide plate 66 is installed below the screen tray 63 in an inclined manner, an input end of the transmission pipeline ii 8 is inserted into a side wall of the screening box 62 corresponding to a lower side position of the guide plate 66, crushed coarse mixture materials are collected into the inner cavity of the screening box 62 through the material collecting hopper 61 and are filtered and screened through the screen mesh 64, and the screening efficiency is improved in combination with starting of the vibrating motor 65, and it is ensured that particle diameters of the materials meet production of magnetic cores.
In this embodiment, as shown in fig. 1 and 5, a material return pipe 7 is penetratingly installed on a side wall of the sieving box 62 corresponding to a lower side position of the sieving plate 63, the material return pipe 7 is penetratingly connected with the transmission pipeline i 4, a material pump iii 71 is installed on the material return pipe 7, and the material pump iii 71 is started to be capable of being matched with the coarse material sieved by returning the coarse material to the pulverizing mechanism 5 again for re-pulverization, so that the production quality of the soft magnetic ferrite is ensured.
In this embodiment, as shown in fig. 2 and 3, the material suction pipeline 2 includes the branch pipes 21 respectively inserted into the inner cavities of the plurality of material bins 1, and the plurality of branch pipes 21 are installed on the same header pipe 22 in a penetrating manner, and the material pump i 23 and the metering pump 24 are installed on the branch pipes 21, so that the materials in the material bins 1 are effectively guaranteed to be respectively sucked according to the mixture ratio of the components, the manual mixture ratio feeding is not needed, and the preprocessing accuracy of the soft magnetic ferrite material is greatly improved.
In this embodiment, as shown in fig. 1 and 4, a control valve i 42 is installed on one side of the transmission pipeline i 4 close to the output end of the rough mixing tank 31, and is used for cooperating with a material pump ii 41 to control the output of the soft magnetic ferrite material after rough mixing.
In this embodiment, as shown in fig. 5, a feeding bin 55 is penetratingly installed on a top wall of one side of the case 51 close to the transmission pipeline i 4, a control valve ii 56 is installed on an output end of the feeding bin 55, and a bin gate 57 for feeding is arranged at an upper end of the feeding bin 55, so as to supplement filtered large-particle material components, so as to ensure that the mixing ratio of each component of the soft magnetic ferrite is complete.
In this embodiment, as shown in fig. 1 to 3, the material bin 1 is an open structure with an opening at an upper end, and a material level meter 101 installed on the material bin 1 monitors the remaining amount of the material in the material bin 1 in time, so as to ensure the addition and replenishment of the material in each material bin 1.
Example 2
The invention also provides a pretreatment method based on the material pretreatment device for soft magnetic ferrite production, which comprises the following steps:
s1, pumping the materials in different material bins 1 according to the proportion and inputting the materials into the rough mixing mechanism 3 for rough mixing;
different materials in different material bins 1 are pumped according to the proportion by starting the material pump I23 and the metering pump 24, the proportion among the materials and the quality of a magnetic core obtained by subsequent sintering can be ensured, and then the materials are input into the rough mixing mechanism 3 and are primarily stirred and mixed by combining the spiral mixing column 35 and the plurality of stirring support rods 32;
s2, after coarse mixing is completed, crushing and screening the output materials through a crushing mechanism 5 and a screening mechanism 6;
after the coarse mixing is finished, a control valve I42 and a material pump II 41 are opened, the coarsely mixed material is input into a crushing mechanism 5 for crushing, and the crushed material is input into a screening box 62 for screening through a screen 64 and a vibration motor 65;
in step S2, the sieved coarse material is refluxed and crushed again through the material return pipe 7 and the material pump iii 71 to ensure the completeness of the components of the material;
s3, inputting the screened materials into a fine mixing and preheating mechanism 9 for fine mixing and preheating;
the screened materials are input into the fine mixing tank 91 by starting the material pump IV 81, and the fine mixing of the materials is carried out by combining a plurality of stirring impellers 94 and two bulk material impellers 910 to preheat the annular electric heating plate 911;
in the step S3, an adhesive is added through an adhesive adding port 914 on the tank body of the fine mixing tank 91, wherein the adhesive is an epoxy resin solution;
the preparation method of the epoxy resin solution comprises the steps of adding 30 parts by weight of epoxy resin into 100 parts by weight of absolute ethyl alcohol solvent to prepare the epoxy resin solution, and adding the epoxy resin solution to ensure the viscosity of the soft magnetic ferrite material, so that the soft magnetic ferrite material can be conveniently formed by a subsequent die.
S4, after the fine mixing and preheating are completed, outputting to obtain a pretreated material;
after the fine mixing is completed, the premixed soft magnetic ferrite material is output from the discharge pipe 912 by opening the discharge valve 913, and can be directly used for subsequent die forming and sintering.
The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.
Claims (8)
1. A material pretreatment device for soft magnetic ferrite production comprises a plurality of material bins, and is characterized in that the material bins are connected with a rough mixing mechanism through material suction pipelines, the output end of the rough mixing mechanism is connected with a crushing mechanism through a transmission pipeline I, a material pump II is mounted on the transmission pipeline I, and the output end of the crushing mechanism is connected with a fine mixing and preheating mechanism through the transmission pipeline II;
the rough mixing mechanism comprises a rough mixing tank, a mixing motor I is mounted on the top wall of the rough mixing tank, a mixing shaft is mounted at the output end of the mixing motor I, the lower end of the mixing shaft extends to the inner cavity of the rough mixing tank and is provided with a spiral mixing column, the lower end of the spiral mixing column is rotatably mounted at the upper end of a bracket, the bracket is fixedly mounted on the inner wall of the rough mixing tank, a plurality of spiral arms are horizontally mounted on a section of the mixing shaft, which is positioned in the inner cavity of the rough mixing tank, at the upper side of the free end of each spiral arm, a stirring vertical rod is mounted at the lower side of the free end of each spiral arm, and a plurality of stirring support rods are horizontally mounted on the stirring vertical rod;
the crushing mechanism comprises a case which is horizontally arranged, a spiral transmission column is rotatably arranged in the case, the shaft end of the spiral transmission column extends to the outer cavity of the case and is arranged at the output end of a driving motor, the driving motor is fixedly arranged on the side wall of the case, and a plurality of crushing cutters are arranged on the annular side wall of the spiral transmission column along the spiral extending direction of the spiral transmission column;
the fine mixing preheating mechanism comprises a fine mixing tank, an annular electric heating plate extending along the inner wall of the fine mixing tank is installed in the middle of an inner cavity of the fine mixing tank, a partition plate is horizontally installed on the upper portion of the inner cavity of the fine mixing tank, a main shaft is vertically inserted into the middle of the partition plate in a rotating mode, a plurality of stirring impellers are fixedly sleeved on one end, located at the lower end of the partition plate, of the main shaft, the upper end of the main shaft extends to an outer cavity of the fine mixing tank and is installed at the output end of a mixing motor II, the mixing motor II is fixedly installed on the top wall of the fine mixing tank, a driving sprocket is sleeved on one section, located at the upper end of the partition plate, of the main shaft, two driven sprockets are connected through a chain, a branch shaft is inserted into the middle of the driven sprocket, the lower end of the branch shaft penetrates through the partition plate and is provided with bulk material impellers, a height difference of 20-34 cm exists between the two bulk material impellers, and a discharging pipe is installed on the bottom wall of the fine mixing tank in a run-through mode, a discharge valve is arranged on the discharge pipe;
wherein, an adhesive adding port is arranged on the top wall of the fine mixing tank;
the output end of the crushing mechanism is also provided with a screening mechanism, the screening mechanism comprises a material collecting hopper arranged on the output end of the case, the lower end of the material collecting hopper is inserted on the top wall of the screening case, a screening disc is obliquely arranged in the inner cavity of the screening case, a screen mesh is embedded in the middle of the screening disc, the lower end of the screening disc is provided with a vibrating motor, an obliquely arranged guide plate is arranged below the screening disc, and the input end of a transmission pipeline II is inserted on the side wall of the screening case corresponding to the position of the lower side of the guide plate; and a material return pipe is arranged on the side wall of the sieving box corresponding to the lower side position of the sieving plate in a through mode, the material return pipe is connected with the transmission pipeline I in a through mode, and a material pump III is arranged on the material return pipe.
2. The pretreatment device for a material for the production of soft magnetic ferrite according to claim 1, wherein: the material suction pipeline comprises branch pipes which are respectively inserted into inner cavities of the material bins, the branch pipes are arranged on the same header pipe in a penetrating mode, and a material pump I and a metering pump are arranged on the branch pipes.
3. The pretreatment device for a material for the production of soft magnetic ferrite according to claim 1, wherein: and a control valve I is installed on one side of the transmission pipeline I, which is close to the output end of the coarse mixing tank.
4. The pretreatment device for a material for the production of soft magnetic ferrite according to claim 1, wherein: and a feeding bin is penetratingly arranged on the top wall of one side, close to the transmission pipeline I, of the case, a control valve II is arranged at the output end of the feeding bin, and a bin door for feeding is arranged at the upper end of the feeding bin.
5. The pretreatment device for a material for the production of soft magnetic ferrite according to claim 1, wherein: the material bin is of an open structure with an opening at the upper end, and a material level meter is arranged on the material bin.
6. A pretreatment method based on the pretreatment apparatus for a material for soft magnetic ferrite production recited in any one of claims 1 to 5, characterized in that: the method comprises the following steps:
s1, pumping the materials in different material bins according to the proportion and inputting the materials into a rough mixing mechanism for rough mixing;
s2, after coarse mixing is completed, crushing and screening the output materials through a crushing mechanism and a screening mechanism;
s3, inputting the screened materials into a fine mixing and preheating mechanism for fine mixing and preheating;
s4, after the fine mixing and preheating are completed, outputting to obtain a pretreated material;
in step S2, the sieved coarse material is returned through a material return pipe and a material pump iii and then crushed.
7. The method for pretreating a material for the production of soft magnetic ferrite according to claim 6, wherein said method comprises the steps of: in the step S3, an adhesive is added through an adhesive adding port on the tank body of the fine mixing tank, and the adhesive is an epoxy resin solution.
8. The method for pretreating a material for the production of soft magnetic ferrite according to claim 7, wherein said method comprises the steps of: the preparation method of the epoxy resin solution comprises the steps of adding 30 parts by weight of epoxy resin into 100 parts by weight of absolute ethyl alcohol solvent to prepare the epoxy resin solution.
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