CN216347639U

CN216347639U - Drying device for sintering ferrite magnetic powder

Info

Publication number: CN216347639U
Application number: CN202121598147.7U
Authority: CN
Inventors: 杜建根
Original assignee: Haining Wanli Electronics Co ltd
Current assignee: Haining Wanli Electronics Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-04-19
Anticipated expiration: 2031-07-14

Abstract

The utility model relates to the technical field of ferrite magnetic powder production equipment, in particular to a drying device for sintering ferrite magnetic powder, which comprises a workbench, wherein a drying box is arranged on one side of the workbench, which is far away from the ground, a drying cavity is arranged in the drying box, a conveying belt positioned in the drying cavity is arranged on the end surface of one side of the workbench, which is far away from the ground, and eight heating plates are horizontally arrayed on one side of the conveying belt, which is far away from the workbench. The utility model has the advantages that in the stage of preheating the ferrite magnetic powder, the heating temperature of the ferrite magnetic powder can be effectively controlled, the problems of reduced drying speed, overburning of the surface layer, cracking and the like caused by the internal migration of moisture due to the fact that the ferrite magnetic powder is heated too fast are prevented, meanwhile, the moist hot air discharged from the drying cavity is used for preheating the dry air entering the drying cavity, the reutilization of heat energy is realized, and the energy is effectively saved.

Description

Drying device for sintering ferrite magnetic powder

Technical Field

The utility model relates to the technical field of ferrite magnetic powder production equipment, in particular to a drying device for sintering ferrite magnetic powder.

Background

The ferrite is a composite oxide consisting of iron and other one or more metals, and the processing and production process comprises the following steps: weighing, mixing, granulating, presintering, ball milling, molding, sintering and machining, and the magnetic property of the ferrite also shows higher magnetic conductivity at high frequency. Therefore, ferrite has become a non-metallic magnetic material with wide application in the high-frequency weak-current field.

In the process of sintering ferrite magnetic powder, drying is required, and related art has been disclosed in the related art about a charging device for ferromagnetic magnetic powder, such as the following publication no: CN 208968220U, authorized announcement date: 11 days 06 and 11 months 2019, the name of the utility model is: the utility model provides a drying device of sintered ferrite magnetic, this application has related to a thermal cycle and has reduced preheating time's magnetic drying device, it mainly utilizes the circulation of stoving intracavity hot-air and heating coil and ferrite magnetic apart from adjusting the purpose that realizes the energy saving and improve stoving speed, however, the hot-air of stoving intracavity contains the moisture great under the evaporation of the inside moisture of ferrite magnetic, if not discharge the moisture regain of ferrite magnetic once more in the stoving chamber in drying process, secondly the ferrite magnetic preheats too fast and also can lead to its surface moisture migration, cause the reduction of stoving speed, cause the ferrite magnetic top layer to burn excessively even, the fracture, it is loose and drop.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide the drying device for sintering the ferrite magnetic powder, which has high drying efficiency and avoids the moisture regain of the ferrite magnetic powder.

The technical scheme of the utility model is realized as follows: the automatic drying device comprises a workbench, the workstation is kept away from ground one side and is equipped with the stoving case, the stoving incasement is equipped with the stoving chamber, the workstation is kept away from ground one side terminal surface and is equipped with the conveyer belt that is located the stoving intracavity, the conveyer belt is kept away from workstation one side horizontal array and is equipped with eight hot plates, fixed being equipped with on hot plate length direction one side terminal surface corresponds the adjusting shaft that the side inner wall rotated to be connected with the stoving chamber, four of both sides adjusting shaft mutual chain is connected, and middle symmetry is two adjusting shaft straight-tooth meshing is connected, the stoving incasement is equipped with two transition chambeies about the stoving chamber symmetry, the transition chamber is close to stoving chamber one side inner wall and the stoving chamber and is close to the array and is equipped with six stoving holes between transition chamber one side inner wall.

The utility model is further configured to: the transition chamber is close to stoving chamber one side inner wall and stoving chamber one side inner wall that is close to the transition chamber is the inclined plane, and its incline direction is for keeping away from workstation lateral surface towards the conveyer belt, the orientation in stoving hole is for the conveyer belt to keep away from workstation lateral surface.

The drying box is kept away from and is fixedly equipped with air intake fan on workstation side end face, air intake fan's admission line connects air drying device's gas outlet, air intake fan's the pipeline of giving vent to anger divide into two and keep away from drying chamber one side inner wall with two transition chamber respectively and link up.

The drying box is characterized in that two preheating barrels are symmetrically and fixedly arranged on end faces of two sides of the drying box, a preheating cavity is arranged in each preheating barrel, an air outlet pipeline of each air inlet fan penetrates through the preheating cavity on the corresponding side, the workbench is close to one end face of the drying box, two exhaust fans are symmetrically and fixedly arranged on the end face of one side of the drying box, the air inlet pipeline of each exhaust fan is communicated with the inner wall of the corresponding side of the drying cavity, the air outlet pipeline of each exhaust fan is communicated with the preheating cavity on the corresponding side, the bottom wall of one side of the drying box is far away from the bottom wall of one side of the drying box, the preheating cavity is close to the bottom wall of one side of the drying box, and is communicated with the outer end face of each preheating barrel to form a guide pipe, and the guide pipe is connected with an air inlet of an air drying device.

And a heat-conducting sleeve is sleeved on the part of the air outlet pipeline of the air inlet fan, which penetrates through the preheating cavity on the corresponding side.

The drying box is close to fixedly on the adjusting shaft side end face and is equipped with control motor, one of them adjusting shaft keeps away from hot plate one side end and extends to the outer terminal surface of drying box and is close to hot plate one side end power connection with control motor.

Two temperature sensors are symmetrically and fixedly arranged on the inner walls of two sides of the drying cavity relative to the air inlet fan, and the temperature sensors are located on the conveying belt and are away from the end face of one side of the working table by the corresponding height.

Through adopting above-mentioned technical scheme, eight hot plates through horizontal array heat the air of going into the stoving chamber, eight hot plate angles and the clearance between two adjacent hot plates can be adjusted simultaneously, thereby in the stage of preheating at the ferrite magnetic, can the effective control ferrite magnetic be heated the temperature, prevented that the ferrite magnetic from heating to cause the drying rate that the moisture moved in to lead to reduce and the top layer overburning in too fast, the scheduling problem cracks, when eight hot plates are opened completely, the both sides slope blows to the heated air of ferrite magnetic and produces the air convection, the ferrite magnetic obtains fully drying, utilize the moist hot-air in discharge stoving chamber to preheat the dry air that gets into the stoving chamber simultaneously, the reuse of heat energy has been realized, effective energy saving.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the driving structure of the heating plate 14 of FIG. 1;

fig. 3 is a schematic structural view of the heating plate 14 of fig. 1 when the gap is opened.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, the utility model discloses a drying device for sintering ferrite magnetic powder, which comprises a workbench 11, wherein a drying box 26 is arranged on one side of the workbench 11 away from the ground, a drying cavity 13 is arranged in the drying box 26, a conveying belt 12 positioned in the drying cavity 13 is arranged on the end surface of one side of the workbench 11 away from the ground, eight heating plates 14 are horizontally arranged on one side of the conveying belt 12 away from the workbench 11 in an array manner, the heating plates 14 generate heat through an external power supply to improve the temperature in the drying cavity 13, an adjusting shaft 24 rotatably connected with the inner wall of the corresponding side of the drying cavity 13 is fixedly arranged on the end surface of one side of the heating plates 14 in the length direction, four adjusting shafts 24 on two sides are mutually connected in a chain manner, two adjusting shafts 24 are symmetrically connected in a straight tooth engagement manner in the middle, wherein the four heating plates 14 on one side are opposite to the four heating plates on the opposite side after power is switched on, two transition cavities 19 are symmetrically arranged in the drying box 26 relative to the drying cavity 13, six drying holes 18 are arranged between the inner wall of one side, close to the drying cavity 13, of the transition cavity 19 and the inner wall of one side, close to the transition cavity 19, of the drying cavity 13 in an array mode, air in the transition cavity 19 can be pressurized through the drying holes 18 and is discharged into the drying cavity 13, and the air discharged into the drying cavity 13 is heated after passing through the heating plate 14 to dry the ferrite magnetic powder.

Referring to fig. 1, the inner wall of the transition chamber 19 near the drying chamber 13 and the inner wall of the drying chamber 13 near the transition chamber 19 are inclined surfaces, the inclined surfaces face the end surface of the conveyor belt 12 far away from the workbench 11, the drying holes 18 face the end surface of the conveyor belt 12 far away from the workbench 11, and under the influence of the angles of the drying holes 18 on the two sides, air input into the drying chamber 13 through the drying holes 18 generates air convection on the side of the conveyor belt 12 near the heating plate 14, so that the drying effect is enhanced.

Referring to the attached drawing 1, an air inlet fan 17 is fixedly arranged on the end surface of one side of the drying box 26, which is far away from the workbench 11, an air inlet pipeline of the air inlet fan 17 is connected with an air outlet of the air drying device, an air outlet pipeline of the air inlet fan 17 is divided into two pipelines which are respectively communicated with the inner walls of one sides of the two transition cavities 19, which are far away from the drying cavity 13, when the air inlet fan 17 is started, dry air is conveyed into the two transition cavities 19, and the dry air entering the transition cavities 19 is discharged into the drying cavity 13 through the drying holes 18 on the corresponding side.

Referring to fig. 1, two preheating cylinders 16 are symmetrically and fixedly arranged on two side end surfaces of the drying box 26 with respect to an air inlet fan 17, a preheating cavity 20 is arranged in each preheating cylinder 16, an air outlet pipeline of the air inlet fan 17 penetrates through the preheating cavity 20 on the corresponding side, two exhaust fans 22 are symmetrically and fixedly arranged on one side end surface of the worktable 11 close to the drying box 26 with respect to the air inlet fan 17, an air inlet pipeline of each exhaust fan 22 is communicated with the inner wall of the corresponding side of the drying cavity 13, an air outlet pipeline of each exhaust fan 22 is communicated with the bottom wall of the corresponding side preheating cavity 20 far away from the drying box 26, a guide pipe 15 is arranged on the bottom wall of one side of the preheating cavity 20 close to the drying box 26 and the outer end surface of the preheating cylinder 16 in a penetrating manner, the guide pipe 15 is connected with an air inlet of an air drying device, and when the exhaust fans 22 are started, the wet air in the drying cavity 13 is discharged into the preheating cavity 20 on the corresponding side, since the air discharged to the preheating chamber 20 by the exhaust fan 22 still contains heat, the air in the preheating chamber 20 can preheat the air discharged to the transition chamber 19 by the intake fan 17.

Referring to fig. 1, a heat conducting sleeve 25 is sleeved on a portion of the air outlet pipeline of the air inlet fan 17, which penetrates through the preheating cavity 20 on the corresponding side, and the heat exchange rate between air in the air outlet pipeline of the air inlet fan 17 and hot air in the preheating cavity 20 can be enhanced through the heat conducting sleeve 25, so that the preheating effect of the air in the air outlet pipeline of the air inlet fan 17 is improved.

Referring to fig. 1, 2 and 3, a control motor 23 is fixedly arranged on an end surface of one side of the drying box 26 close to the adjusting shaft 24, one end of the adjusting shaft 24 far from the heating plate 14 extends to an outer end surface of the drying box 26 and is in power connection with one end of the control motor 23 close to the heating plate 14, when the control motor 23 is started, the four heating plates 14 on two sides are driven to rotate in different directions, so that the angle relationship between the gaps between the eight heating plates 14 and the drying holes 18 on the corresponding sides is changed, the circulation of hot air blown to one side of the conveying belt 12 close to the heating plate 14 by the drying holes 18 is adjusted, the heating temperature of ferrite magnetic powder on the conveying belt 12 is adjusted, and the reasonable temperature rise and preheating of the ferrite magnetic powder are realized.

Referring to the attached drawing 1, two temperature sensors 21 are symmetrically and fixedly arranged on the inner walls of two sides of the drying cavity 13 about the air inlet fan 17, the temperature sensors 21 are located on the conveying belt 12 and are far away from the corresponding height of the end face of one side of the working table 11, the temperature sensors 21 can detect the temperature of ferrite magnetic powder on the conveying belt 12 and control the starting and rotating angle and direction of the drying cavity 13, so that the drying temperature of the ferrite magnet can be intelligently controlled.

Working principle; after the ferrite magnetic powder enters the drying cavity 13 through the conveyor belt 12, at the moment, the eight heating plates 14 are in a horizontal state, the gap between two adjacent heating plates 14 is small, the heating plates 14 are started to generate heat, the exhaust fan 22 and the air inlet fan 17 are started, the air inlet fan 17 introduces dry air into the transition cavity 19, the drying holes 18 blow fresh air in the transition cavity 19 to the heating plates 14, the exhaust fan 22 extracts air in the drying cavity 13 and exchanges heat with an air outlet pipeline of the air inlet fan 17 through the preheating cavity 20, because the gap between the eight heating plates 14 is small, the air blown out from the drying holes 18 is concentrated on one side of the heating plates 14 far away from the conveyor belt 12, the heating speed of the air between the conveyor belt 12 and the heating plates 14 is slow, thereby realizing the control of preheating the ferrite magnetic powder, preventing the moisture migration of the ferrite magnetic powder caused by too fast preheating, when the temperature sensor 21 senses that the temperature of the ferrite magnetic powder reaches a set temperature, the control motor 23 is started to drive the eight heating plates 14 to rotate, the rotating directions of the four heating plates 14 at the corresponding sides are the inclined directions of the drying holes 18 at the corresponding positions, the gap between two adjacent heating plates 14 is increased, the air blown out from the drying holes 18 and heated by the heating plates 14 forms air convection at one side of the conveying belt 12 close to the heating plates 14, so that the ferrite magnetic powder is quickly dried, wherein the moist air discharged to the preheating cavity 20 by the exhaust fan 22 still contains heat, and the dry air discharged to the air outlet pipeline of the air inlet fan 17 is preheated by the heat conduction effect of the heat conduction sleeve 25, so that the heat is recycled, the energy loss is reduced, meanwhile, the moist air discharged by the exhaust fan 22 in the preheating cavity 20 after being treated by the drying device is recycled by the air inlet fan 17, the exhaust emission of waste gas is reduced, and after the ferrite magnetic powder on the conveying belt 12 is dried, the control motor 23 drives the heating plate 14 to reset along the same transmission line, the air inlet fan 17 and the air outlet fan 22 are closed, the drying cavity 13 enters a cooling stage, residual moisture is removed through self heat storage, and the ferrite magnetic powder is thoroughly dried.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a drying device of sintered ferrite magnetic, includes workstation (11), workstation (11) are kept away from ground one side and are equipped with stoving case (26), be equipped with stoving chamber (13) in stoving case (26), workstation (11) are kept away from a side end face of ground and are equipped with conveyer belt (12) that are located stoving chamber (13), its characterized in that: conveyer belt (12) are kept away from workstation (11) one side horizontal array and are equipped with eight hot plate (14), fixed being equipped with on hot plate (14) length direction side end face corresponds side inner wall and rotates adjustment axle (24) of being connected, four of both sides adjustment axle (24) mutual chain is connected, and middle symmetry is two adjustment axle (24) straight-tooth meshing is connected, be equipped with two transition chamber (19) in stoving case (26) about stoving chamber (13) symmetry, transition chamber (19) are close to stoving chamber (13) one side inner wall and stoving chamber (13) and are close to between transition chamber (19) one side inner wall array and be equipped with six stoving hole (18).

2. The drying apparatus for sintered ferrite magnetic powder according to claim 1, wherein: transition chamber (19) are close to stoving chamber (13) one side inner wall and stoving chamber (13) are close to transition chamber (19) one side inner wall and are the inclined plane, and its incline direction is for keeping away from workstation (11) a side end face towards conveyer belt (12), the workstation (11) a side end face is kept away from for conveyer belt (12) to the orientation of drying hole (18).

3. The drying apparatus for sintered ferrite magnetic powder according to claim 1, wherein: stoving case (26) are kept away from and are fixedly equipped with air intake fan (17) on workstation (11) a side end face, the admission line of air intake fan (17) is connected air drying device's gas outlet, the pipeline of giving vent to anger of air intake fan (17) divide into two and keep away from stoving chamber (13) one side inner wall with two transition chamber (19) respectively and link up.

4. The drying apparatus for sintered ferrite magnetic powder according to claim 1, wherein: two preheating cylinders (16) are symmetrically and fixedly arranged on the end surfaces of the two sides of the drying box (26) relative to the air inlet fan (17), a preheating cavity (20) is arranged in the preheating cylinder (16), an air outlet pipeline of the air inlet fan (17) penetrates through the preheating cavity (20) on the corresponding side, two exhaust fans (22) are symmetrically and fixedly arranged on the end surface of one side of the workbench (11) close to the drying box (26) and relative to the air inlet fan (17), an air inlet pipeline of the exhaust fan (22) is communicated with the inner wall of the corresponding side of the drying cavity (13), an air outlet pipeline of the exhaust fan (22) is communicated with the bottom wall of one side of the preheating cavity (20) on the corresponding side far away from the drying box (26), the preheating chamber (20) is close to the drying box (26) one side diapire and preheating section of thick bamboo (16) outer end face link up and are equipped with eduction tube (15), eduction tube (15) are connected air drying device's air inlet.

5. The drying apparatus for sintered ferrite magnetic powder according to claim 4, wherein: and a heat-conducting sleeve (25) is sleeved on the part of the air outlet pipeline of the air inlet fan (17) penetrating through the preheating cavity (20) on the corresponding side.

6. The drying apparatus for sintered ferrite magnetic powder according to claim 1, wherein: the drying box (26) is close to and is fixed on adjusting shaft (24) one side terminal surface and be equipped with control motor (23), and one of them adjusting shaft (24) keep away from hot plate (14) one side end and extend to drying box (26) outer terminal surface and with control motor (23) be close to hot plate (14) one side end power connection.

7. The drying apparatus for sintered ferrite magnetic powder according to claim 1, wherein: two temperature sensors (21) are symmetrically and fixedly arranged on the inner walls of two sides of the drying cavity (13) relative to the air inlet fan (17), and the temperature sensors (21) are located on the conveying belt (12) and are away from the end face of one side of the workbench (11) by the corresponding height.