CN113606933B - Soft magnetic material double-push plate sintering furnace - Google Patents
Soft magnetic material double-push plate sintering furnace Download PDFInfo
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- CN113606933B CN113606933B CN202110871654.1A CN202110871654A CN113606933B CN 113606933 B CN113606933 B CN 113606933B CN 202110871654 A CN202110871654 A CN 202110871654A CN 113606933 B CN113606933 B CN 113606933B
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- air inlet
- wall column
- kiln
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
- F27B9/045—Furnaces with controlled atmosphere
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
- F27B9/22—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path on rails, e.g. under the action of scrapers or pushers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
- F27B9/3005—Details, accessories or equipment specially adapted for furnaces of these types arrangements for circulating gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
- F27B9/32—Casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/04—Ram or pusher apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases or liquids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Tunnel Furnaces (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a soft magnetic material double-push plate sintering furnace, which comprises a furnace body, wherein a kiln cavity, a heating cavity, a supporting guide rail and an air inlet wall column are arranged in the furnace body, the heating cavity is arranged below the kiln cavity, the supporting guide rail is arranged between the heating cavity and the kiln cavity, the air inlet wall column is hung at the top of the kiln cavity, the supporting guide rail is provided with a middle air inlet channel, two side walls of the kiln cavity far away from the air inlet wall column are respectively provided with a plurality of side air inlet holes which are arranged from top to bottom, the middle air inlet channel and each side air inlet hole are communicated with the heating cavity, the air inlet wall column is provided with a wall column air inlet channel, the wall column air inlet channel is in butt joint communication with the middle air inlet channel, and a plurality of columns of middle air inlet holes are arranged on the side surfaces of the air inlet wall column. According to the invention, process gas is introduced into the kiln cavity from the left, middle and right positions, so that the consistency of oxygen content of materials on the same section in the kiln cavity is ensured, the air inlet wall column adopts a hoisting mode, and when the burning bearing plate is inclined to be contacted with the air inlet wall column, the air inlet wall column can rotate and swing left and right, and the phenomenon that the burning bearing plate is inclined due to overlarge scraping force is avoided.
Description
Technical Field
The invention relates to sintering equipment, in particular to a soft magnetic material double-push-plate sintering furnace.
Background
The magnetic material is a composite oxide sintered nonmetallic magnetic material, and products at the same temperature ensure that the same oxygen partial pressure is produced as much as possible for reaction according to the sintering process of the soft magnetic ferrite. The sintering of the soft magnetic ferrite has strict temperature and oxygen partial pressure requirements, and the soft magnetic ferrite has different solid phase reactions under different temperatures and oxygen partial pressures, so that the same oxygen partial pressure of the product must be ensured under the same sintering temperature in order to ensure the sintering performance of the product, and particularly, the oxygen content corresponds to a strict oxygen content range (1 m 3/h-0.1 m 3/h) in a cooling section at 1300-1050 ℃. Thus, the sintering process is critical to the performance of the soft magnetic material. In the sintering process, the mixed gas of air and nitrogen is introduced into the sintering furnace, so that the soft magnetic ferrite is subjected to fixed solid phase reaction at a certain oxygen partial pressure and temperature.
At present, a hearth of the soft magnetic material double-push plate sintering push plate furnace has two forms of kiln channel separation and kiln channel combination. The kiln channels are separated, namely, middle wall bricks are arranged in the middle of the guide rail, and process gas is introduced into the kiln cavity from the left, middle and right three points of the kiln cavity, so that the consistency of the oxygen content of products on the same section is ensured, but the risk that the kiln is blocked due to scraping of the middle wall bricks by the burning bearing plate exists. For the kiln channel in a non-separated form, the middle guide rail is provided with an air inlet, when the left pushing plate and the right pushing plate are combined and pushed, the round corners of the two pushing plates are correspondingly overlapped with the air inlet, and gas enters the kiln cavity from the round corner joints. In the structure, the gas enters the kiln cavity discontinuously, so that the stability of the atmosphere is difficult to ensure.
Disclosure of Invention
The invention aims to solve the technical problems of overcoming the defects in the prior art, and provides the soft magnetic material double-push plate sintering furnace which is introduced into a kiln cavity from three positions of left, middle and right, ensures the consistency of oxygen content of materials on the same section in the kiln cavity, and can rotate and swing left and right when a burning bearing plate is inclined to be contacted with the kiln cavity, so that the burning bearing plate is prevented from toppling due to overlarge scraping force.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a soft magnetic material double push plate fritting furnace, includes the furnace body, be equipped with kiln chamber, heating chamber, supporting rail and inlet wall post in the furnace body, the below in kiln chamber is located to the heating chamber, supporting rail locates between heating chamber and the kiln chamber, inlet wall post hangs at kiln chamber top, the heating chamber is equipped with main air inlet, supporting rail is equipped with middle inlet channel, all be equipped with a plurality of lateral part inlet port from top to bottom on two lateral walls that the inlet wall post was kept away from to the kiln chamber, middle inlet channel and each lateral part inlet port all communicate with the heating chamber, the inlet wall post is equipped with wall post inlet channel, wall post inlet channel and middle inlet channel butt joint intercommunication, be equipped with a plurality of middle inlet ports of arranging on the inlet wall post side surface, every row includes a plurality of middle inlet ports of arranging from top to bottom.
As a further improvement of the technical scheme, a limit groove is formed in the top of the kiln cavity, the upper end of the air inlet wall column is arranged in the limit groove, and a gap is formed between the limit groove and the air inlet wall column.
As a further improvement of the technical scheme, a protective sleeve is arranged in the limiting groove.
As a further improvement of the technical scheme, the bottom of the air inlet wall column is a spherical surface, and the middle air inlet channel is tangential to the spherical surface.
As a further improvement of the technical scheme, two push plate grooves are formed in the support guide rail, a middle convex part is arranged between the two push plate grooves, the middle air inlet channel is arranged on the middle convex part, and the spherical surface can be supported on the middle convex part.
As a further improvement of the technical scheme, the air inlet wall column is a cylinder, and the plurality of rows of middle air inlet holes are uniformly distributed along the circumferential direction of the air inlet wall column.
As a further improvement of the technical scheme, side air inlet channels are arranged in two side walls of the kiln cavity far away from the air inlet wall column, the side air inlet channels are communicated with the heating cavity, and side air inlet holes on each side are communicated with the side air inlet channels on the side where the side air inlet holes are located.
As a further improvement of the technical scheme, the air inlet wall column is a high-temperature-resistant corundum mullite column.
As a further improvement of the technical scheme, the soft magnetic material double-push plate sintering furnace is divided into a plurality of temperature areas along the feeding direction, and an air inlet wall column is arranged in each temperature area.
Compared with the prior art, the invention has the advantages that:
(1) According to the soft magnetic material double-push plate sintering furnace, process gas is introduced into the kiln cavity from the left, middle and right positions of the kiln cavity, so that the consistency of oxygen content of materials on the same section in the kiln cavity is ensured, the air inlet wall column adopts a hoisting mode, and when the burning bearing plate is inclined to be contacted with the air inlet wall column, the air inlet wall column can rotate and swing left and right, and the burning bearing plate is prevented from being toppled over due to overlarge scraping force.
(2) According to the soft magnetic material double-push plate sintering furnace, the top of the kiln cavity is provided with the limiting groove, the upper end of the air inlet wall column is arranged in the limiting groove, and a gap is formed between the limiting groove and the air inlet wall column. The limiting groove is internally provided with a protective sleeve. The air inlet wall column top is equipped with spacing groove and protective sheath, can allow air inlet wall column to produce slight swing, restricts air inlet wall column swing range, prevents that its swing range from too big even empting and takes place the stifled kiln accident, and when the hoist cable of hanging breaks, because of the restriction of spacing groove and protective sheath, air inlet wall column can not empty to the kiln intracavity and cause kiln way jam accident.
(3) The bottom of the air inlet wall column is a spherical surface, the spherical surface can be supported on the middle convex part, and the middle air inlet channel is tangential to the spherical surface.
Drawings
FIG. 1 is a schematic cross-sectional view of a soft magnetic material double pusher plate sintering furnace of the present invention.
FIG. 2 is a schematic view of the air inlet route of the soft magnetic material double-push plate sintering furnace of the invention.
Fig. 3 is a front view of a soft magnetic material double pusher plate sintering furnace of the present invention.
The reference numerals in the drawings denote:
1. a furnace body; 11. a heat preservation layer; 12. side wall bricks; 13. a bottom support base; 2. a kiln cavity; 21. a limit groove; 22. a protective sleeve; 3. a heating chamber; 31. a primary air inlet; 4. a support rail; 41. a push plate groove; 42. a middle convex part; 5. an air inlet wall column; 51. a wall post air inlet passage; 52. a middle air inlet hole; 53. a spherical surface; 54. a sling; 61. a middle intake passage; 62. a side air inlet; 63. a side intake passage; 7. a warm zone; 8. a push plate; 9. and a burning plate.
Detailed Description
The invention is described in further detail below with reference to the drawings and specific examples of the specification.
As shown in fig. 1 and 2, the soft magnetic material double-push plate sintering furnace of the embodiment comprises a furnace body 1, a kiln cavity 2, a heating cavity 3, a supporting guide rail 4 and an air inlet wall column 5 are arranged in the furnace body 1, the heating cavity 3 is arranged below the kiln cavity 2, the supporting guide rail 4 is arranged between the heating cavity 3 and the kiln cavity 2, the air inlet wall column 5 is suspended at the top of the kiln cavity 2, the heating cavity 3 is provided with a main air inlet 31, the supporting guide rail 4 is provided with a middle air inlet channel 61, two side walls of the kiln cavity 2 far away from the air inlet wall column 5 are respectively provided with a plurality of side air inlet holes 62 which are arranged from top to bottom, the middle air inlet channel 61 and each side air inlet hole 62 are communicated with the heating cavity 3, the air inlet wall column 5 is provided with a wall column air inlet channel 51, a plurality of middle air inlet holes 52 are arranged on the side surface of the air inlet wall column 5, and each row comprises a plurality of middle air inlet holes 52 which are arranged up and down. The air inlet wall column 5 is a hollow wall column, the top is closed, and the hollow forms a wall column air inlet channel 51. Each of the intermediate intake holes 52 communicates with the wall stud intake passage 51. The bottom of the wall post air inlet channel 51 is in abutting communication with the intermediate air inlet channel 61.
FIG. 1 shows a cross-sectional view of a dual push plate sintering furnace perpendicular to the feed direction. Along the feeding direction, two rows of push plates 8 need to be arranged in a kiln cavity 2 of the double-push plate sintering furnace, namely, the kiln cavity 2 is divided into a left area A and a right area B, and the two rows of push plates 8 are respectively arranged in the left area A and the right area B. The push plate 8 is movably supported on the support guide rail 4, a plurality of layers of burning plates 9 are arranged on the push plate 8, and materials are arranged on each layer of burning plates 9. The air inlet wall post 5 is between the left area a and the right area B. At least one row of middle air inlet holes 52 are arranged on the air inlet wall column 5 and face the burning bearing plate 9 in the left area, and at least one row of middle air inlet holes 52 face the burning bearing plate 9 in the right area B. The side air inlet holes 62 on the side wall of the left area A face the burning bearing plate 9 of the left area A, and the side air inlet holes 62 on the side wall of the right area B face the burning bearing plate 9 of the right area B.
The process gas enters the heating cavity 3 from the main gas inlet 31, and is divided into three paths after being heated in the heating cavity 3: one path enters the wall column air inlet channel 51 from the middle air inlet channel 61, and enters the left area A and the right area B from the middle air inlet holes 52 of each row respectively as shown by arrow P1 in FIG. 2, and horizontally sweeps the materials on the burning bearing plate 9 as shown by arrows P2 and P3 in FIG. 2; one path enters the left area A through a side air inlet hole 62 on the side wall of the left area A, and the arrow P4 in FIG. 2 is shown to transversely sweep the materials on the burning bearing plate 9; the other path enters the right zone B through the side air inlet holes 62 on the side wall of the right zone B, and the arrow P5 in FIG. 2 is used for transversely sweeping the materials on the burning bearing plate 9.
The soft magnetic material double-push plate sintering furnace is characterized in that process gas is introduced into the kiln cavity from the left, middle and right positions of the kiln cavity, so that the consistency of oxygen content of materials on the same section in the kiln cavity 2 is ensured. The air inlet wall column 5 adopts a hoisting mode, when the burning bearing plate 9 is inclined to be contacted with the air inlet wall column, the air inlet wall column 5 can rotate by 360 degrees and swing left and right, and the burning bearing plate 9 is prevented from toppling due to overlarge scraping force.
In this embodiment, the side air intake holes 62 are uniformly arranged from top to bottom, and the middle air intake holes 52 are uniformly arranged from top to bottom. The air inlet wall column 5 is preferably a cylinder, and a plurality of rows of middle air inlet holes 52 are uniformly distributed along the circumferential direction of the air inlet wall column 5, so that the uniformity of air inlet in the kiln cavity 2 is improved.
In this embodiment, a limiting groove 21 is arranged at the top of the kiln chamber 2, the upper end of the air inlet wall column 5 is arranged in the limiting groove 21, and a gap is formed between the limiting groove 21 and the air inlet wall column 5. Preferably, a protective sleeve 22 is arranged in the limit groove 21. The air inlet wall column 5 top is equipped with spacing groove 21 and protective sheath 22, can allow air inlet wall column 5 to produce slight swing, restricts air inlet wall column 5 swing range, prevents that its swing range is too big even emptys and takes place the kiln accident, and when the hoist cable 54 that hangs breaks, because of the restriction of spacing groove 21 and protective sheath 22, air inlet wall column 5 can not empty to kiln chamber 2 in and cause kiln way jam accident.
In this embodiment, two push plate grooves 41 are provided on the support rail 4, a middle convex portion 42 is provided between the two push plate grooves 41, a middle air inlet channel 61 is provided on the middle convex portion 42, the bottom of the air inlet wall column 5 is a spherical surface 53, the spherical surface 53 can be supported on the middle convex portion 42, the middle air inlet channel 61 is tangential to the spherical surface 53, the structure can ensure that the middle air inlet channel 61 is communicated with the wall column air inlet channel 51, and when the air inlet wall column 5 swings slightly, the spherical surface 53 swings and cannot be clamped by friction with the middle convex portion 42, so that the air inlet wall column 5 can swing freely.
In this embodiment, side air inlet channels 63 are respectively arranged in two side walls of the kiln chamber 2 far away from the air inlet wall column 5, the side air inlet channels 63 are communicated with the heating chamber 3, and the side air inlet holes 62 on each side are communicated with the side air inlet channels 63 on the side. The top of the kiln chamber 2 is provided with an insulating layer 11. Side wall bricks 12 are arranged on the side parts of the kiln cavity 2, and the side wall bricks 12 are hollow structures. The hollow side wall blocks 12 form side air inlet channels 63. A bottom supporting seat 13 is arranged below the supporting guide rail 4.
In this embodiment, the air inlet wall column 5 is a high temperature resistant corundum mullite column.
In this embodiment, as shown in fig. 3, along the feeding direction, the soft magnetic material dual-push plate sintering furnace is divided into a plurality of temperature areas 7, and each temperature area 7 is internally provided with an air inlet wall column 5. Each temperature zone 7 is provided with an air inlet wall column 5, so that the temperature and air flow between the temperature zones 7 are prevented from flowing in a serial manner, and the balance of the temperature and atmosphere in the same temperature zone 7 is maintained.
While the invention has been described with reference to preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (9)
1. A soft magnetic material double-push plate sintering furnace is characterized in that: including furnace body (1), be equipped with kiln chamber (2), heating chamber (3), supporting rail (4) and inlet port wall post (5) in furnace body (1), the below of kiln chamber (2) is located in heating chamber (3), supporting rail (4) are located between heating chamber (3) and kiln chamber (2), inlet port wall post (5) hang at kiln chamber (2) top, heating chamber (3) are equipped with main air inlet (31), supporting rail (4) are equipped with middle inlet channel (61), all be equipped with a plurality of lateral part inlet ports (62) that arrange from last to down on the both sides wall that inlet port wall post (5) were kept away from to kiln chamber (2), middle inlet channel (61) and each lateral part inlet port (62) all communicate with heating chamber (3), inlet port wall post (5) are equipped with wall post inlet channel (51), inlet port wall post (51) are connected with middle inlet channel (61) butt joint, inlet port wall post (5) side surface is equipped with multiple row middle inlet port (52), every down including a plurality of middle inlet port wall post (52) of arranging.
2. The soft magnetic material double pusher sintering furnace of claim 1, wherein: the kiln is characterized in that a limiting groove (21) is formed in the top of the kiln cavity (2), the upper end of the air inlet wall column (5) is arranged in the limiting groove (21), and a gap is formed between the limiting groove (21) and the air inlet wall column (5).
3. The soft magnetic material double pusher sintering furnace of claim 2, wherein: a protective sleeve (22) is arranged in the limit groove (21).
4. A soft magnetic material double pusher sintering furnace according to any of claims 1 to 3, characterized in that: the bottom of the air inlet wall column (5) is a spherical surface (53), and the middle air inlet channel (61) is tangential to the spherical surface (53).
5. The soft magnetic material double pusher sintering furnace of claim 4, wherein: two push plate grooves (41) are formed in the support guide rail (4), a middle convex part (42) is arranged between the two push plate grooves (41), the middle air inlet channel (61) is formed in the middle convex part (42), and the spherical surface (53) can be supported on the middle convex part (42).
6. A soft magnetic material double pusher sintering furnace according to any of claims 1 to 3, characterized in that: the air inlet wall column (5) is a cylinder, and a plurality of rows of middle air inlet holes (52) are uniformly distributed along the circumferential direction of the air inlet wall column (5).
7. A soft magnetic material double pusher sintering furnace according to any of claims 1 to 3, characterized in that: side air inlet channels (63) are formed in two side walls, far away from the air inlet wall column (5), of the kiln cavity (2), the side air inlet channels (63) are communicated with the heating cavity (3), and side air inlet holes (62) of each side are communicated with the side air inlet channels (63) of the side.
8. A soft magnetic material double pusher sintering furnace according to any of claims 1 to 3, characterized in that: the air inlet wall column (5) is a high-temperature-resistant corundum mullite column.
9. A soft magnetic material double pusher sintering furnace according to any of claims 1 to 3, characterized in that: along the feeding direction, the soft magnetic material double-push plate sintering furnace is divided into a plurality of temperature areas (7), and an air inlet wall column (5) is arranged in each temperature area (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110871654.1A CN113606933B (en) | 2021-07-30 | 2021-07-30 | Soft magnetic material double-push plate sintering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110871654.1A CN113606933B (en) | 2021-07-30 | 2021-07-30 | Soft magnetic material double-push plate sintering furnace |
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| CN113606933A CN113606933A (en) | 2021-11-05 |
| CN113606933B true CN113606933B (en) | 2023-04-28 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2704011Y (en) * | 2004-06-10 | 2005-06-08 | 横店集团东磁有限公司 | Coal-burning pushed bat kiln for sintering soft magnet oxysome |
| CN105444566A (en) * | 2015-12-04 | 2016-03-30 | 中国电子科技集团公司第四十八研究所 | Furnace body of atmosphere protection three-pushed-slab kiln |
| CN208075576U (en) * | 2018-04-18 | 2018-11-09 | 江阴长源机械制造有限公司 | The sidewall block of nitrogen atmosphere protection pushed slab kiln |
| CN209246660U (en) * | 2018-10-10 | 2019-08-13 | 南京金銮窑炉设备有限公司 | The push plate kiln plate and pushed bat kiln for having atmosphere protection function |
| CN112728933A (en) * | 2021-01-20 | 2021-04-30 | 王霞 | Multichannel wheel rail tunnel cave |
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2021
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