An impurity removal and recycling device for ferrite powder

Abstract

The present invention discloses an impurity removal and recycling device for ferrite powder, which includes a frame, a steel box, an exhaust duct, a driving part A, a slide rail, a strong magnetic chuck and a driving part B; a feed bin is fixed on the top of the frame, and a conveyor belt is arranged inside the frame; the steel box is fixed behind the conveyor belt, and a powder conveying gap is reserved between its bottom wall and the conveyor belt; a plurality of protrusions are arranged on the outer side of the bottom wall of the steel box, and an impurity recovery bin and a powder recovery bin are arranged below it; the exhaust duct is fixed on the top of the impurity recovery bin; the driving part A is fixed above the frame; the slide rail is fixed below the driving part A, the strong magnetic chuck is located above the steel box, and the driving part B drives the up and down movement of the strong magnetic chuck. The present invention adopts a dry process, reducing the emissions of waste water and waste gas during the recovery and impurity removal of ferrite powder; by utilizing the magnetic characteristics of ferrite raw materials, the powder is recovered through a strong magnetic chuck, and the impurities are extracted by the exhaust duct, with high purity of the recovered material and improved utilization rate of waste materials.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic powder impurity removal and recycling, and more specifically to an impurity removal and recycling device for ferrite powder. Background Art

[0002] Ferrite is a ferromagnetic metal oxide, which is sintered from iron oxides and other ingredients, and can generally be divided into three types: permanent magnet ferrite, soft magnet ferrite, and gyromagnetic ferrite. Ferrite has high dielectric properties and magnetic permeability, and has become a widely used non-metallic magnetic material in the field of high-frequency weak electricity. Ferrite can be used in electroacoustics, telecommunications, electric meters and motors, and can also be used as memory components, microwave components, etc.

[0003] The production of ferrite is similar to the sintering process of ceramics. Metal oxides or carbonates or other compounds that form ferrite through solid-phase reaction are mixed evenly, and then ball-milled, dried, and pressed into a specific shape. In order to avoid adhesion, deformation or improve product performance during the sintering process of ferrite, alumina or zirconia powder is often sprinkled on the surface of the green body. However, this will cause a lot of powders with impurities such as alumina powder, zirconia powder, and dust to be generated during the pressing process of ferrite powder due to phenomena such as friction, extrusion, and leakage. In addition, many magnetic cores introduce impurities such as zirconia powder due to green body parts with unqualified technical indicators such as size or weight during the production process. These powders and green body parts will have relatively large quality hazards after sintering, so they are basically scrapped directly in the forming process. Up to now, the proportion of unqualified green body parts and contaminated powders generated in this process by relatively excellent magnetic core manufacturers is still 2-9%. That is, for a magnetic core manufacturer with a monthly output of 500 tons, the quantity of unqualified green body parts and contaminated powders produced each month is 10-45 tons. If these powders can be recycled, it will generate great production profits. Currently, the common recycling methods of manufacturers are to directly scrap or mix them with good materials to make secondary products. There are also some manufacturers that re-mix the recycled materials with good materials and treat them wetly and then recycle them for the second time, but the cost is relatively high.

[0004] Therefore, how to provide an impurity removal and recycling device for ferrite powder, which uses the magnetic characteristics of ferrite powder to remove alumina powder, zirconia powder, dust and other impurities from the ferrite powder, improve the impurity removal purity of the ferrite powder, and reduce the impurity removal cost, is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides an impurity removal and recycling device for ferrite powder, which adopts a dry process, uses strong magnetic adsorption combined with gravity, air extraction and other methods to remove impurities in the ferrite powder and recycle it.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A ferrite powder impurity removal and recycling device, comprising:

[0008] A frame, on the top of which a feed bin is fixed, and below the discharge port of the feed bin and inside the frame, a conveyor belt is drivingly connected;

[0009] A steel box, which is fixed above the frame and located at the rear upper part in the conveying direction of the conveyor belt, and a powder conveying gap is reserved between the bottom wall of the steel box and the conveyor belt; a plurality of protrusions are arranged on the outer side of the bottom wall of the steel box close to the end of the conveyor belt; below the steel box, an impurity recovery bin and a powder recovery bin are arranged in sequence along the powder conveying direction, wherein the impurity recovery bin is arranged corresponding to the positions below the plurality of protrusions;

[0010] An exhaust pipe, which is fixed on the top of the impurity recovery bin to extract impurities in the powder;

[0011] A driving part A, the housing of which is fixed on the frame corresponding to the steel box;

[0012] A slide rail, which is arranged above the steel box and along the conveying direction of the conveyor belt, and is fixed at the lower end of the housing of the driving part A;

[0013] A strong magnetic chuck, which is arranged above the steel box;

[0014] A driving part B, the mounting end of which is slidably connected to the slide rail, the fixed end of the driving part B is fixedly connected to the driving end of the driving part A, and the driving end of the driving part B is fixedly connected to the strong magnetic chuck to drive it to move up and down.

[0015] The beneficial effects of the above technical solution are as follows: the powder enters from the feed bin and is conveyed by the conveyor belt. When the powder enters the powder conveying gap below the steel box, the driving part A is turned on, and the piston rod of the driving part B extends to make the strong magnetic chuck enter the steel box. At this time, since the recycled material in the powder is magnetic, the strong magnetic chuck can suck up the recycled material and adsorb it on the outer side of the bottom wall of the steel box. With the operation of the belt of the driving part A, the driving part B will slide along the slide rail, and the strong magnetic chuck drives the recycled material to move along the bottom wall of the steel box. When the powder passes through the protrusions, the exhaust pipe extracts the impurities and enters the impurity recovery bin. When the recycled material reaches above the powder recovery bin, the piston rod of the driving part B retracts, and the recycled material will enter the powder recovery bin due to the disappearance of the magnetic force, completing the separation of impurities and recycled material in the ferrite powder and completing the automatic impurity removal of the ferrite powder.

[0016] Preferably, in the above-mentioned iron oxide powder impurity removal and recycling equipment, it further includes a baffle plate. The baffle plate is fixed on the frame and located above the conveyor belt, and is used to sort the powder conveyed on the conveyor belt into a thin layer corresponding to the powder conveying gap. During the process of the conveyor belt conveying the powder, when the powder passes through the baffle plate, it will be filtered into a thinner surface layer. After the powder becomes a thin layer, the magnetic recovery material can be picked up by the strong magnetic chuck, and the impurities are sucked away through the exhaust pipe and enter the impurity recovery bin. Through the thin layer, the effective separation of the recovery material and the impurities can be ensured, and the purity of the recovery material can be improved.

[0017] Preferably, in the above-mentioned iron oxide powder impurity removal and recycling equipment, the baffle plate is arranged between the outer wall of the feed bin and the outer side wall of the steel box. The powder is filtered into a thin layer before entering the bottom of the steel box, which improves the separation effect of the impurities and the recovery material and ensures the purity of the final recovery material.

[0018] Preferably, in the above-mentioned iron oxide powder impurity removal and recycling equipment, the driving part A includes a housing, a belt and a motor; the housing is fixed on the frame corresponding to the upper part of the steel box, and a plurality of pulleys are rotatably connected to the housing along the powder conveying direction. The belt is wound around the plurality of pulleys, and the motor is fixed at one end of the housing and is in transmission connection with the pulley, and is used to drive the operation of the belt. The belt is fixed to the driving part B. When the motor drives the pulley to rotate, the moving track of the driving part B is the same as the running track of the belt. The driving part B controls the lifting of the strong magnetic chuck through the piston rod.

[0019] Preferably, in the above-mentioned iron oxide powder impurity removal and recycling equipment, a pulley is slidably connected to the slide rail, and the pulley is fixedly connected to the cylinder barrel of the driving part B. The end cover of the driving part B is fixedly connected to the belt, so that the driving part B slides along the slide rail with the rotation of the belt. During operation, the driving part B will move horizontally along the movement track of the belt. During the horizontal movement of the driving part B, it will drive the pulley to move on the slide rail; when the piston rod of the driving part B extends, the strong magnetic chuck will enter the steel box to pick up the magnetic recovery material and slide along the steel box with the rotation of the belt. When it slides to the other side of the steel box, the piston rod of the driving part B retracts, and the strong magnetic chuck will rise. In this state, the recovery material will fall into the powder recovery bin due to the magnetic adsorption. At this time, the driving part B will enter the initial position with the rotation of the belt, and then the piston rod extends to perform the next cycle of automatic powder separation operation.

[0020] Preferably, in the above-mentioned impurity removal and recycling equipment for ferrite powder, an impurity discharge port is provided at the bottom of the impurity recycling bin, and a powder recycling port is provided at the bottom of the powder recycling bin; electromagnetic valves are provided in both the impurity discharge port and the powder recycling port. By controlling the opening and closing of the impurity discharge port and the powder recycling port with electromagnetic valves, the powder collected in the impurity recycling bin can be pressed into gaskets for repeated use during the ferrite firing process after simple treatment; the recycled materials collected in the powder recycling bin can be added to the normal powder in a certain proportion for recycling and reuse, reducing the recycling cost of ferrite and improving the utilization rate of waste materials.

[0021] Preferably, in the above-mentioned impurity removal and recycling equipment for ferrite powder, the steel box is made of 304 stainless steel. The magnetic attraction of 304 stainless steel is very weak and can be ignored, which will not affect the sliding of the strong magnetic chuck in the steel box and will not affect the adsorption of the magnetic recycled materials.

[0022] As can be seen from the above technical solutions, compared with the prior art, the present invention discloses an impurity removal and recycling equipment for ferrite powder, which adopts a dry recycling process, reducing the emissions of sewage and waste gas; taking advantage of the magnetic property of the recycled materials, the powder is filtered into a thin layer by a baffle, and the strong magnetic chuck sucks the magnetic recycled materials. By using the protrusion at the bottom of the steel box, the powder passing through the protrusion is turned up, and the magnetic recycled materials will move along with the movement of the strong magnetic chuck, while the impurities will be extracted by the exhaust duct, which can significantly reduce the impurities in the recycled materials, improve the purity of the recycled materials, and both the recycled impurities and the recycled materials can be reprocessed and utilized, improving the utilization value of ferrite waste materials and reducing the production cost. Brief Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings according to the provided drawings without creative efforts.

[0024] Figure 1 It is a schematic structural diagram of the impurity removal and recycling equipment provided by the present invention;

[0025] Figure 2 It is a schematic diagram of the engineering process of the impurity removal and recycling equipment provided by the present invention.

[0026] Wherein:

[0027] 1 - Feed bin; 2 - Conveyor belt; 3 - Baffle; 4 - Impurity recovery bin; 41 - Impurity discharge port; 5 - Powder recovery bin; 51 - Powder recovery port; 6 - Exhaust duct; 7 - Steel box; 71 - Protrusion; 8 - Driving part A; 81 - Motor; 82 - Belt; 83 - Housing; 9 - Slide rail; 91 - Pulley; 10 - Driving part B; 11 - Strong magnetic chuck; 12 - Frame. Detailed implementation manners

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] See the attached Figure 1 , the embodiments of the present invention disclose and provide a ferrite powder impurity removal and recovery device, which adopts a dry process, uses strong magnetic adsorption combined with gravity, air extraction and other methods to remove impurities in the ferrite powder and recycle it, including:

[0030] Frame 12, with a feed bin 1 fixed at the top of the frame 12, and a conveyor belt 2 is drivingly connected inside the frame 12 below the discharge port of the feed bin 1;

[0031] Steel box 7, the steel box 7 is fixed above the frame 12 and is located at the rear upper part of the conveying direction of the conveyor belt 2, and a powder conveying gap is reserved between the bottom wall of the steel box 7 and the conveyor belt 2; a plurality of protrusions 71 are arranged on the outer side of the bottom wall of the steel box 7 close to the end of the conveyor belt 2; below the steel box 7, an impurity recovery bin 4 and a powder recovery bin 5 are arranged in sequence along the powder conveying direction, and the impurity recovery bin 4 is arranged corresponding to the positions below the plurality of protrusions 71;

[0032] Exhaust duct 6, the exhaust duct 6 is fixed on the top of the impurity recovery bin 4 to extract impurities in the powder;

[0033] Driving part A 8, the housing of the driving part A 8 is fixed on the frame 12 corresponding to the upper part of the steel box 7;

[0034] Slide rail 9, the slide rail 9 corresponds to the upper part of the steel box 7 and is arranged along the conveying direction of the conveyor belt, and is fixed at the lower end of the housing of the driving part A 8;

[0035] Strong magnetic chuck 11, the strong magnetic chuck 11 is arranged above the steel box 7;

[0036] Driving part B 10, the mounting end of the driving part B 10 is slidably connected to the slide rail 9, the fixed end of the driving part B 10 is fixedly connected to the driving end of the driving part A 8, and the driving end of the driving part B 10 is fixedly connected to the strong magnetic chuck 11 to drive it to move up and down.

[0037] In this embodiment, the driving part A8 includes a housing 83, a belt 82, and a motor 81. The housing 83 is fixed on the frame 12 above the corresponding steel box 7. A plurality of pulleys are rotatably connected to the housing 83 along the powder conveying direction. The belt 82 is wound around the plurality of pulleys. The motor 81 is fixed at one end of the housing 83 and is drivingly connected to the pulley for driving the operation of the belt 82.

[0038] In this embodiment, in order to ensure that the movement track of the driving part B is synchronized with the operation track of the belt, and at the same time ensure that the driving part B can slide effectively in the horizontal direction, a pulley 91 is slidably connected to the slide rail 9. The pulley 91 is fixedly connected to the cylinder barrel of the driving part B10. The end cover of the driving part B10 is fixedly connected to the belt 82, so that the driving part B10 slides along the slide rail 9 with the transmission of the belt 82.

[0039] To further optimize the above technical solution, improve the separation purity of powder impurities, and improve the adsorption effect of the strong magnetic chuck, a baffle plate 3 is further included. The baffle plate 3 is fixed on the frame and is located above the conveyor belt 2 for filtering the powder conveyed on the conveyor belt 2 into a thin layer.

[0040] See the appendix Figure 1 , the baffle plate is arranged obliquely, and the inclination angle between it and the conveyor belt is 50°-60°. When the powder falls from the feed bin onto the conveyor belt, it will accumulate. During the conveying process of the powder, the baffle plate can filter the accumulated powder into a thin layer, so that the strong magnetic chuck can better adsorb on the outer bottom wall of the steel box, improving the powder separation and purification effect.

[0041] In this embodiment, the powder flow gap includes but is not limited to the distance between the bottom wall of the steel box and the conveyor belt, and the distance between the outer wall of the steel box and the baffle plate. The powder flow gap is 10-12 cm. The powder is in a thin layer in the flow gap. The strong magnetic chuck can adsorb the magnetic powder in the thin layer of powder on the outer bottom wall of the steel box. The non-magnetic impurity powder will be sucked into the impurity recovery bin through the exhaust pipe to complete the impurity separation. When the strong magnetic chuck enters above the powder recovery bin, it will rise. At this time, the magnetism acting on the bottom wall of the steel box disappears, and the magnetic powder will fall into the powder recovery bin to complete the collection of the magnetic powder.

[0042] In this embodiment, the number of protrusions is not less than three, and the spacing is 35-50 mm. During the movement of the strong magnetic chuck, through the action of the plurality of protrusions, the powder can be turned up, and the non-magnetic impurities will be sucked away through the exhaust pipe into the impurity recovery bin after being turned up.

[0043] To further optimize the above technical solution and effectively exert the function of the baffle plate, the baffle plate 3 is arranged between the outer wall of the feed bin 1 and one side wall of the steel box 7.

[0044] In order to further optimize the above technical solution, ensure the impurity removal and recycling of ferrite powder for reuse, and reduce the firing cost of ferrite, an impurity discharge port 41 is opened at the bottom of the impurity recovery bin 4, and a powder recovery port 51 is opened at the bottom of the powder recovery bin 5; solenoid valves are provided in both the impurity discharge port 41 and the powder recovery port 51.

[0045] In order to further optimize the above technical solution, ensure that the strong magnetic chuck effectively sucks the magnetic recovery material, and at the same time ensure the effective movement of the strong magnetic chuck in the steel box, the steel box 7 is made of 304 stainless steel.

[0046] See Appendix Figure 2 , the working principle of the ferrite powder impurity removal and recycling equipment provided by the present invention is:

[0047] In this embodiment, the driving part B adopts a cylinder, and one end of its piston rod is fixedly connected to the strong magnetic chuck.

[0048] The unqualified green parts are crushed into powder by dry crushing, and the powder after crushing the green parts and the contaminated materials in the ferrite production process are jointly used as the powder to be purified and decontaminated and put into the feed bin;

[0049] The powder in the feed bin enters the conveyor belt through the discharge port. During the conveying process, it is leveled into a relatively thin surface layer by the baffle, and then the powder is conveyed to the powder conveying gap between the steel box and the conveyor belt;

[0050] The piston rod of the driving part B extends, and the strong magnetic chuck is sent into the steel box. At this time, the magnetic recovery material in the powder will be adsorbed on the bottom outer wall of the steel box due to the magnetic force of the strong magnetic chuck;

[0051] The motor is started, the belt rotates, and the driving part B will drive the pulley to slide along the slide rail as the belt rotates, and then the strong magnetic chuck will slide in the steel box;

[0052] When the strong magnetic chuck passes through the corresponding convex position, the powder will be turned up by the convex, the magnetic recovery material still adheres to the convex, and the non-magnetic impurities will be sucked into the impurity recovery bin through the exhaust pipe;

[0053] The strong magnetic chuck continues to move. When it reaches the other end of the steel box, the piston rod of the driving part B retracts, pulling up the strong magnetic chuck to separate it from the steel box. The magnetic recovery material attached to the outer wall of the steel box falls into the powder recovery bin due to the disappearance of the magnetic force of the strong magnetic chuck; One automatic recovery and impurity removal process of ferrite powder is completed;

[0054] The belt continues to run to drive the driving part B back to the initial position, and the piston rod of the driving part B extends to enter the next powder recovery and impurity removal process.

[0055] The recycled impurities can be pressed into gaskets and reused in the ferrite sintering process; the recycled materials in the powder recycling bin can be added to the normal powder in a certain proportion for recycling and used as raw materials for ferrite sintering.

[0056] The ferrite powder impurity removal and recycling equipment provided by the present invention adopts a dry process, reducing the emissions of waste water and waste gas, and being more environmentally friendly during the powder recycling and impurity removal process; by utilizing the magnetic characteristics of ferrite raw materials, the reusable recycled materials in the unqualified blanks are recycled through a strong magnetic chuck, and the impurities are extracted by an exhaust pipe, resulting in a higher purity of the recycled materials, effectively reducing the production cost of ferrite, improving the efficiency of the enterprise, and at the same time increasing the utilization rate of waste materials.

[0057] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and reference can be made to the description in the method part for the relevant parts.

[0058] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An impurity removal and recycling device for ferrite powder, characterized in that, Including: A frame (12), with a feed bin (1) fixed at the top of the frame (12), and a conveyor belt (2) drivingly connected inside the frame (12) below the discharge opening of the feed bin (1). A steel box (7), which is fixed above the frame (12) and located at the upper rear of the conveying direction of the conveyor belt (2). There is a powder conveying gap reserved between the bottom wall of the steel box (7) and the conveyor belt (2). A plurality of protrusions (71) are provided on the outer side of the bottom wall of the steel box (7) near the end of the conveyor belt (2). Below the steel box (7) along the powder conveying direction, there are successively an impurity recovery bin (4) and a powder recovery bin (5). Among them, the impurity recovery bin (4) is arranged corresponding to the lower part of the plurality of protrusions (71). An exhaust duct (6), which is fixed on the top of the impurity recovery bin (4) to extract impurities in the powder. A driving part A (8), the housing of the driving part A (8) is fixed on the frame (12) corresponding to the upper part of the steel box (7). The driving part A (8) includes a housing (83), a belt (82) and a motor (81). The housing (83) is fixed on the frame (12) corresponding to the upper part of the steel box (7). A plurality of pulleys are rotatably connected on the housing (83) along the powder conveying direction. The belt (82) is wound around the plurality of pulleys. The motor (81) is fixed at one end of the housing (83) and is drivingly connected to the pulley to drive the operation of the belt (82). A slide rail (9), which is arranged corresponding to the upper part of the steel box (7) along the conveying direction of the conveyor belt, and is fixed at the lower end of the housing of the driving part A (8). A strong magnetic chuck (11), which is arranged above the steel box (7). A driving part B (10), the mounting end of the driving part B (10) is slidably connected to the slide rail (9), the fixed end of the driving part B (10) is fixedly connected to the driving end of the driving part A (8), and the driving end of the driving part B (10) is fixedly connected to the strong magnetic chuck (11) to drive it to move up and down. A pulley (91) is slidably connected to the slide rail (9), the pulley (91) is fixedly connected to the cylinder barrel of the driving part B (10), and the fixed end of the driving part B (10) is fixedly connected to the belt (82) so that the driving part B (10) slides along the slide rail (9) with the transmission of the belt (82).

2. The impurity removal and recycling equipment for ferrite powder according to claim 1, characterized in that, It further includes a baffle plate (3), the baffle plate (3) is fixed on the frame and is located above the conveyor belt (2) for arranging the powder conveyed on the conveyor belt (2) into a thin layer corresponding to the powder conveying gap.

3. The impurity removal and recycling equipment for ferrite powder according to claim 2, characterized in that, The baffle plate (3) is arranged between the outer wall of the feed bin (1) and the outer side wall of the steel box (7).

4. The impurity removal and recycling equipment for ferrite powder according to claim 1, characterized in that, An impurity discharge port (41) is opened at the bottom of the impurity recovery bin (4), and a powder recovery port (51) is opened at the bottom of the powder recovery bin (5).

5. An impurity removal and recycling device for ferrite powder according to claim 4, characterized in that, Solenoid valves are provided in both the impurity discharge port (41) and the powder recovery port (51).

6. A ferrite powder impurity removal and recycling device according to claim 1, characterized in that, The steel box (7) is made of 304 stainless steel.

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