Kiln for sintering permanent magnetic ferrite

Abstract

The utility model belongs to the technical field of magnetic material sintering, and particularly relates to a kiln for sintering permanent magnetic ferrite, which comprises a sintering bin, a bin door is arranged on one side of the sintering bin, a guide plate is fixedly arranged in the sintering bin, a plurality of guide rollers are movably arranged on the guide plate, a plurality of vent holes are arranged on the guide plate, and the vent holes are communicated with the bin door. A discharging bin is fixedly arranged on the other side of the sintering bin, a material guiding inclined plate is fixedly arranged in the discharging bin, an air guiding structure is arranged at the top of the discharging bin, a heating structure is fixedly arranged at the top of the sintering bin, and a purifying assembly is arranged at the top of the sintering bin; through the arrangement of the first air guide pipe, the second air guide pipe, the first heat conduction box and the second heat conduction box, hot air acts on the top and the bottom of the permanent magnetic ferrite from the air outlet holes in the bottoms of the first heat conduction box and the second heat conduction box during sintering, the problem of traditional single-face heating is avoided, and the top face and the ground of the permanent magnetic ferrite are heated at the same time; the heating uniformity is ensured, and the sintering quality of products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic material sintering, in particular to a kiln for sintering permanent magnetic ferrite. Background Art

[0002] Permanent ferrite is made of SrO or BaO and ferric oxide through ceramic process. Magnetic materials are basic functional materials in the electronics industry. Permanent magnetic materials, as an important component of magnetic materials, play an important role in the electronics industry, information industry, motorcycles, power tools industry, automobile industry and other industries. The actual processing and production process of permanent ferrite involves sintering molding process.

[0003] However, the existing equipment does not have a kiln that heats the top and bottom at the same time. One-way heating will cause uneven heating of the permanent magnet ferrite, thereby affecting the sintering quality of the product. At the same time, when the sintering is completed and the product is discharged, the product enters the discharge bin from the sintering bin. Since the temperature difference between the discharge bin and the sintering bin is large, the qualified rate of the electromagnetic performance will be affected. Therefore, a kiln for sintering permanent magnet ferrite is proposed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a kiln for sintering permanent ferrite.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a kiln for sintering permanent magnet ferrite, comprising a sintering bin, a bin door is provided on one side of the sintering bin, a guide plate is fixedly provided in the sintering bin, a plurality of guide rollers are movably provided on the guide plate, a plurality of ventilation holes are provided on the guide plate, a discharge bin is fixedly provided on the other side of the sintering bin, a material guide inclined plate is fixedly provided in the discharge bin, an air guide structure is provided on the top of the discharge bin, a heating structure is fixedly provided on the top of the sintering bin, and a purification component is provided on the top of the sintering bin;

[0006] The heating structure includes a heating bin fixedly connected to the top of the sintering bin, and a plurality of first air ducts and a second air duct are respectively provided on both sides of the heating bin, and one end of the first air duct and the second air duct respectively penetrates through an inner wall of one side of the sintering bin and are respectively fixed with a first heat conduction box and a second heat conduction box.

[0007] As a further description of the above technical solution:

[0008] The number of the first heat-conducting box, the second heat-conducting box, the first air duct and the second air duct are all seven, and a plurality of air outlet holes are provided on the side close to the first heat-conducting box and the second heat-conducting box, and the inner diameter of the air outlet hole is three millimeters.

[0009] As a further description of the above technical solution:

[0010] A ventilation hole is arranged on the top inner wall of the sintering bin, and the top of the ventilation hole is fixedly connected to the purification component.

[0011] As a further description of the above technical solution:

[0012] The purification component comprises a valve fixedly mounted on the ventilation hole, a purification box is arranged on the top of the valve, a plurality of air outlet holes are arranged on the top inner wall of the purification box, and an activated carbon filter layer is movably arranged in the purification box.

[0013] As a further description of the above technical solution:

[0014] The air guide structure includes an air pump fixedly mounted on the top of the discharge bin, an air intake pipe and an exhaust pipe are fixedly arranged on the top and bottom of the air pump respectively, and the lower end of the exhaust pipe penetrates the top inner wall of the discharge bin and is fixedly provided with an air outlet plate.

[0015] As a further description of the above technical solution:

[0016] A plurality of exhaust holes are provided at the bottom of the air outlet plate, and the inner diameter of the exhaust holes is two millimeters.

[0017] The utility model has the following beneficial effects:

[0018] 1. Compared with the prior art, the kiln for sintering permanent magnet ferrites is provided with a first air duct, a second air duct, a first heat conduction box and a second heat conduction box. During sintering, hot air acts on the top and bottom of the permanent magnet ferrite from the air outlets at the bottom of the first heat conduction box and the second heat conduction box, thereby avoiding the problem of traditional single-sided heating, achieving simultaneous heating of the top and bottom of the permanent magnet ferrite, ensuring uniform heating, and improving the sintering quality of the product.

[0019] 2. Compared with the prior art, the kiln for sintering permanent magnet ferrites is provided with an air pump, an air outlet plate and an air suction pipe. The air pump guides the hot air in the sintering bin into the discharge bin. Since the inner diameter of the exhaust hole at the bottom of the air outlet plate is small, the temperature difference between the discharge bin and the sintering bin can be reduced, and the temperature in the discharge bin can be moderately maintained lower than the temperature of the sintering bin. The material after sintering falls into the discharge bin through the material guide inclined plate. Since the temperature difference between the discharge bin and the sintering bin is small, the temperature can be prevented from dropping drastically, thereby ensuring the qualified rate of electromagnetic performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure from the first perspective of a kiln for sintering permanent ferrites proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the third perspective structure of a kiln for sintering permanent ferrites proposed by the utility model;

[0022] Figure 3 It is a front cross-sectional schematic diagram of a kiln for sintering permanent ferrites proposed by the utility model;

[0023] Figure 4 This is a three-dimensional structural schematic diagram of a guide plate in a kiln for sintering permanent ferrites proposed by the utility model;

[0024] Figure 5 The utility model discloses a three-dimensional schematic diagram of a heating structure in a kiln for sintering permanent ferrite.

[0025] Legend:

[0026] 1. Sintering bin; 2. Bin door; 3. Guide plate; 4. Guide roller; 5. Ventilation hole; 6. Discharge bin; 7. Guide inclined plate; 8. Air guide structure; 801. Air pump; 802. Air outlet disc; 803. Air intake pipe; 9. Heating structure; 901. Heating bin; 902. First air guide pipe; 903. Second air guide pipe; 904. First heat conduction box; 905. Second heat conduction box; 10. Purification component. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figures 1 to 5 The utility model provides a kiln for sintering permanent magnet ferrites: it comprises a sintering bin 1, a bin door 2 is provided on one side of the sintering bin 1, a guide plate 3 is fixedly provided in the sintering bin 1, a plurality of guide rollers 4 are movably provided on the guide plate 3, a plurality of ventilation holes 5 are provided on the guide plate 3, a discharge bin 6 is fixedly provided on the other side of the sintering bin 1, a guide inclined plate 7 is fixedly provided in the discharge bin 6, a wind guide structure 8 is provided on the top of the discharge bin 6, the wind guide structure 8 comprises an air pump 801 fixedly mounted on the top of the discharge bin 6, an air intake pipe 803 and an exhaust pipe are fixedly provided on the top and bottom of the air pump 801, the lower end of the exhaust pipe passes through the top inner wall of the discharge bin 6 and is fixedly provided with an air outlet plate 802, a plurality of exhaust holes are provided at the bottom of the air outlet plate 802, the inner diameter of the exhaust hole is two millimeters, and the setting of the wind guide structure 8 can reduce the temperature difference between the discharge bin 6 and the sintering bin 1, thereby preventing the temperature from dropping drastically and ensuring the qualified rate of electromagnetic performance;

[0029] A heating structure 9 is fixedly provided on the top of the sintering bin 1. The heating structure 9 includes a heating bin 901 fixedly connected to the top of the sintering bin 1. A plurality of first air ducts 902 and second air ducts 903 are respectively provided on both sides of the heating bin 901. One end of the first air duct 902 and the second air duct 903 respectively penetrates through the inner wall of one side of the sintering bin 1 and is respectively fixed with a first heat conduction box 904 and a second heat conduction box 905. The number of the first heat conduction box 904, the second heat conduction box 905, the first air duct 902 and the second air duct 903 are all seven. A plurality of air outlets are provided on the side close to the first heat conduction box 904 and the second heat conduction box 905. The inner diameter of the air outlet is three millimeters. The heating structure 9 realizes simultaneous heating of the top and bottom surfaces of the material, ensures the heating uniformity of the equipment, and improves the sintering quality.

[0030] A purification component 10 is provided on the top of the sintering bin 1. A ventilation hole is provided on the top inner wall of the sintering bin 1. The top of the ventilation hole is fixedly connected to the purification component 10. The purification component 10 includes a valve fixedly installed with the ventilation hole. A purification box is provided on the top of the valve. A plurality of air outlet holes are provided on the top inner wall of the purification box. An activated carbon filter layer is movably provided in the purification box. The purification component 10 can purify the gas discharged from the equipment.

[0031] Working principle: When in use, open the door 2, then place the permanent magnet ferrite to be sintered on top of the multiple guide rollers 4, then close the door 2 and start the heating element and air pump 801 in the heating chamber 901, and the hot air in the heating chamber 901 is introduced into the multiple first heat conduction boxes 904 and the second heat conduction boxes 905 through the multiple first air ducts 902 and the second air ducts 903. The hot air finally acts on the top and bottom of the permanent magnet ferrite from the air outlet at the bottom of the first heat conduction box 904 and the second heat conduction box 905, so as to heat the top and the bottom of the permanent magnet ferrite at the same time, ensure the uniformity of heating, and improve the sintering quality of the product. The equipment needs to exhaust gas When the valve is opened, the gas in the sintering bin 1 enters the purification component 10, and the purification component 10 can filter the unpleasant gas and then discharge it, so as not to pollute the surrounding air. The air pump 801 guides the hot air in the sintering bin 1 into the discharge bin 6. Since the inner diameter of the exhaust hole at the bottom of the air outlet plate 802 is small, the temperature difference between the discharge bin 6 and the sintering bin 1 can be reduced, and the temperature in the discharge bin 6 can be kept lower than the temperature of the sintering bin 1. The material after sintering falls into the discharge bin 6 through the guide inclined plate 7. Since the temperature difference between the discharge bin 6 and the sintering bin 1 is small, the cliff drop in temperature can be prevented, thereby ensuring the qualified rate of electromagnetic performance.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A kiln for sintering permanent magnet ferrites, comprising a sintering chamber (1), characterized in that: A bin door (2) is provided on one side of the sintering bin (1), a guide plate (3) is fixedly provided inside the sintering bin (1), a plurality of guide rollers (4) are movably provided on the guide plate (3), a plurality of ventilation holes (5) are provided on the guide plate (3), a discharge bin (6) is fixedly provided on the other side of the sintering bin (1), a guide inclined plate (7) is fixedly provided inside the discharge bin (6), a wind guide structure (8) is provided on the top of the discharge bin (6), a heating structure (9) is fixedly provided on the top of the sintering bin (1), and a purification component (10) is provided on the top of the sintering bin (1); The heating structure (9) comprises a heating bin (901) fixedly connected to the top of the sintering bin (1), and a plurality of first air ducts (902) and second air ducts (903) are respectively provided on both sides of the heating bin (901), and one end of each of the first air ducts (902) and the second air ducts (903) respectively penetrates through an inner wall of one side of the sintering bin (1) and is respectively fixedly provided with a first heat conduction box (904) and a second heat conduction box (905).

2. A permanent magnet ferrite sintering kiln according to claim 1, characterized in that: The number of the first heat-conducting box (904), the second heat-conducting box (905), the first air duct (902) and the second air duct (903) are all seven, and a plurality of air outlet holes are provided on the side close to the first heat-conducting box (904) and the second heat-conducting box (905), and the inner diameter of the air outlet hole is three millimeters.

3. A permanent magnet ferrite sintering kiln according to claim 1, characterized in that: A ventilation hole is provided on the top inner wall of the sintering bin (1), and the top of the ventilation hole is fixedly connected to the purification component (10).

4. A permanent magnet ferrite sintering kiln according to claim 3, characterized in that: The purification component (10) comprises a valve fixedly mounted on the ventilation hole, a purification box is provided on the top of the valve, a plurality of air outlet holes are provided on the top inner wall of the purification box, and an activated carbon filter layer is movably provided in the purification box.

5. The kiln for sintering permanent magnet ferrite according to claim 1, characterized in that: The air guide structure (8) includes an air pump (801) fixedly mounted on the top of the discharge bin (6), an air intake pipe (803) and an exhaust pipe being fixedly mounted on the top and bottom of the air pump (801), respectively, and a lower end of the exhaust pipe passes through the top inner wall of the discharge bin (6) and is fixedly mounted with an air outlet plate (802).

6. A permanent magnet ferrite sintering kiln according to claim 5, characterized in that: The bottom of the air outlet plate (802) is provided with a plurality of exhaust holes, and the inner diameter of the exhaust holes is two millimeters.

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