CN113606933A - Soft magnetic material double-push-plate sintering furnace - Google Patents
Soft magnetic material double-push-plate sintering furnace Download PDFInfo
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- CN113606933A CN113606933A CN202110871654.1A CN202110871654A CN113606933A CN 113606933 A CN113606933 A CN 113606933A CN 202110871654 A CN202110871654 A CN 202110871654A CN 113606933 A CN113606933 A CN 113606933A
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- air inlet
- soft magnetic
- magnetic material
- wall column
- inlet channel
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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 tunnel furnace
- 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 tunnel furnace 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 peculiar to furnaces of these types
- F27B9/3005—Details, accessories, or equipment peculiar to 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 peculiar to 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 inlets which are arranged from top to bottom, the middle air inlet channel and each side air inlet 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 communicated with the middle air inlet channel in a butt joint mode, and a plurality of rows of middle air inlets are arranged on the side surface of the air inlet wall column. The process gas is introduced into the kiln cavity from the left part, the middle part and the right part, so that the consistency of the oxygen content of the materials on the same section in the kiln cavity is ensured, the gas inlet wall columns adopt a hoisting mode, and when the burning board is inclined to be contacted with the gas inlet wall columns, the gas inlet wall columns can rotate and swing left and right, so that the burning board is prevented from toppling due to overlarge scraping force.
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 body non-metal magnetic material, and products at the same temperature are reacted under the same oxygen partial pressure as far as possible according to the sintering process of the soft magnetic ferrite. The sintering of the soft magnetic ferrite has strict requirements on temperature and oxygen partial pressure, the soft magnetic ferrite has different solid phase reactions at different temperatures and oxygen partial pressures, in order to ensure the sintering performance of products, the same oxygen partial pressure of the products must be ensured at the same sintering temperature, particularly in the cooling section of 1300-1050 ℃, the oxygen content corresponds to the strict oxygen content range (1m 3/h-0.1 m 3/h). Therefore, the sintering process is critical to the performance of the soft magnetic material. In the sintering process, mixed gas of air and nitrogen is required to be introduced into the sintering furnace, so that the soft magnetic ferrite is subjected to a fixed solid-phase reaction at a certain oxygen partial pressure and temperature.
The hearth of the existing soft magnetic material double-push plate sintering push plate furnace has two forms of kiln path separation and kiln path combination. The kiln paths are separated, namely, the middle wall brick is arranged in the middle of the guide rail, and the process gas is introduced into the kiln cavity from the left, the middle and the right points of the kiln cavity, so that the consistency of the oxygen content of products on the same section is ensured, but the risk of kiln blockage caused by scraping the middle wall brick by the burning bearing plate exists. And for the kiln path non-separated form, the middle guide rail is provided with an air inlet, when the left and right push plates are combined and pushed, the round corners of the two push plates and the air inlet are correspondingly superposed, and gas enters the kiln cavity from the round corner seams. With the structure, the gas enters the kiln cavity discontinuously, and the stability of the atmosphere is difficult to ensure.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a soft magnetic material double-pushing-plate sintering furnace which is introduced into a kiln cavity from the left, the middle and the right, ensures the consistency of the oxygen content of materials on the same section in the kiln cavity, and can prevent the burning board from toppling over due to overlarge scraping force because an air inlet wall column can rotate and swing left and right when the burning board is inclined and contacted with the burning board.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a two push pedal fritting furnaces of soft magnetic material, includes the furnace body, be equipped with kiln chamber, heating chamber, support guide and wall post admits air in the furnace body, the below in kiln chamber is located in the heating chamber, support guide locates between heating chamber and the kiln chamber, the wall post admits air hangs at the kiln chamber top, the heating chamber is equipped with main air inlet, support guide is equipped with middle inlet channel, all be equipped with a plurality of lateral part inlet ports of arranging down from last on two lateral walls that the wall post admits air are kept away from to the kiln chamber, middle inlet channel and each lateral part inlet port all communicate with the heating chamber, the wall post that admits air is equipped with wall post inlet channel, wall post inlet channel docks the intercommunication with middle inlet channel, be equipped with inlet port in the middle of multiseriate on the wall post side surface of admitting air, every is listed as including a plurality of middle inlet ports of arranging from top to bottom.
As a further improvement of the technical scheme, the top of the kiln cavity is provided with a 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.
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 tangent to the spherical surface.
As a further improvement of the technical scheme, the supporting guide rail is provided with two push plate grooves, 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 a plurality of rows of middle air inlets 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 a side air inlet on each side is communicated with the side air inlet channel on the side where the side air inlet is 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, the process gas is introduced into the kiln cavity from the left part, the middle part and the right part of the kiln cavity, so that the consistency of the oxygen content of the material on the same section in the kiln cavity is ensured, the air inlet wall columns adopt a hoisting mode, and when the burning board is inclined to be contacted with the air inlet wall columns, the air inlet wall columns can rotate and swing left and right, so that the burning board is prevented from toppling 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. A protective sleeve is arranged in the limiting groove. The wall post top of admitting air is equipped with spacing groove and protective sheath, can allow the wall post of admitting air to produce slight swing, and the restriction wall post amplitude of oscillation of admitting air prevents that its amplitude of oscillation from crossing greatly and empting even and take place the stifled kiln accident, and when the hoist cable fracture that hangs, because of the restriction of spacing groove and protective sheath, the wall post of admitting air can not empty to the kiln intracavity and cause the kiln way and block up the accident.
(3) According to the soft magnetic material double-push-plate sintering furnace, the bottom of the air inlet wall column is a spherical surface, the spherical surface can be supported on the middle convex part, the middle air inlet channel is tangent to the spherical surface, the structure can ensure that the middle air inlet channel is communicated with the wall column air inlet channel, when the air inlet wall column slightly swings, the spherical surface does not rub with the middle convex part to be clamped, and the air inlet wall column is ensured to swing freely.
Drawings
Fig. 1 is a schematic cross-sectional view of a double push plate sintering furnace for soft magnetic materials of the present invention.
FIG. 2 is a schematic view of the air inlet route of the double push plate sintering furnace for soft magnetic materials of the present invention.
Fig. 3 is a front view of the double push plate sintering furnace of the soft magnetic material of the present invention.
The reference numerals in the figures denote:
1. a furnace body; 11. a heat-insulating layer; 12. side wall bricks; 13. a bottom support seat; 2. a kiln chamber; 21. a limiting groove; 22. a protective sleeve; 3. a heating cavity; 31. a primary air inlet; 4. supporting the guide rail; 41. a push plate groove; 42. a middle convex part; 5. an air inlet wall pillar; 51. a wall column air inlet channel; 52. a middle air inlet hole; 53. spherical surface; 54. a sling; 61. an intermediate intake passage; 62. a side air intake; 63. a side intake passage; 7. a temperature zone; 8. pushing the plate; 9. and (7) burning a board.
Detailed Description
The invention is described in further detail below with reference to the figures 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 is arranged in the furnace body 1, a heating cavity 3, a supporting guide rail 4 and an air inlet wall column 5, 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 hung 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 arranged from top to bottom, the middle air inlet channel 61 and each side air inlet hole 62 are respectively 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 arranged up and down. The air inlet wall column 5 is a hollow wall column, the top of the air inlet wall column is closed, and the air inlet wall column forms a wall column air inlet channel 51 in a hollow mode. Each of the intermediate intake holes 52 communicates with the wall stud intake passage 51. The bottom of the wall column air inlet passage 51 is in butt communication with the middle air inlet passage 61.
Fig. 1 shows a cross-sectional view of a double push plate sintering furnace perpendicular to the feed direction. Along the feeding direction, two rows of push plates 8 are required 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 bearing plates 9 are arranged on the push plate 8, and materials are arranged on the layers of burning bearing plates 9. The inlet wall pillar 5 is between the left zone a and the right zone B. At least one row of the burning board 9 with the middle air inlet holes 52 facing the left area and at least one row of the burning board 9 with the middle air inlet holes 52 facing the right area B are arranged on the air inlet wall column 5. The side air inlet holes 62 on the side wall of the left zone A face the burning plate 9 of the left zone A, and the side air inlet holes 62 on the side wall of the right zone B face the burning plate 9 of the right zone 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 in each row as shown by arrows P1 in FIG. 2, and is transversely swept to the materials on the burning board 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 is transversely swept to the materials on the burning board 9 as shown by an arrow P4 in FIG. 2; the other path enters the right area B through the side air inlet holes 62 on the side wall of the right area B, and is transversely swept towards the material on the burning board 9 as shown by an arrow P5 in FIG. 2.
According to the soft magnetic material double-push-plate sintering furnace, process gas is introduced into the kiln cavity from the left, the middle and the right of the kiln cavity, so that the consistency of the 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 board 9 is inclined to contact with the air inlet wall column 5, the air inlet wall column can rotate 360 degrees and swing left and right, and the phenomenon that the burning board 9 is toppled over due to overlarge scraping force is avoided.
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 the military flag in the kiln cavity 2 is improved.
In this embodiment, the top of the kiln chamber 2 is provided with a limiting groove 21, 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 limiting groove 21. The top of the air inlet wall column 5 is provided with a limiting groove 21 and a protective sleeve 22, which can allow the air inlet wall column 5 to slightly swing, limit the swing amplitude of the air inlet wall column 5, prevent the kiln blocking accident caused by too large swing amplitude or even dumping, and when the suspended sling 54 is broken, the air inlet wall column 5 can not dump into the kiln cavity 2 to cause the kiln channel blocking accident due to the limitation of the limiting groove 21 and the protective sleeve 22.
In this embodiment, two push plate grooves 41 are arranged on the support rail 4, a middle convex portion 42 is arranged between the two push plate grooves 41, a middle air inlet channel 61 is arranged 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 tangent 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, when the air inlet wall column 5 slightly swings, the spherical surface 53 swings and the middle convex portion 42 cannot generate friction to be clamped, and the air inlet wall column 5 can freely swing.
In this embodiment, two side walls of the kiln chamber 2 far away from the air inlet wall column 5 are provided with side air inlet channels 63, 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 channel 63 on the side. The top of the kiln chamber 2 is provided with a heat preservation layer 11. The side wall brick 12 is arranged on the side part of the kiln cavity 2, and the side wall brick 12 is of a hollow structure. The hollow side wall bricks 12 form side air inlet passages 63. A bottom support seat 13 is arranged below the support 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, the soft magnetic material double-push plate sintering furnace is divided into a plurality of temperature zones 7 along the feeding direction, and an air inlet wall column 5 is arranged in each temperature zone 7. Each temperature zone 7 is provided with an air inlet wall column 5, so that the temperature and airflow among the temperature zones 7 are prevented from moving, and the balance of the temperature and the atmosphere in the same temperature zone 7 is kept.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (9)
1. The utility model provides a two push pedal fritting furnaces of soft magnetic material which characterized in that: comprises a furnace body (1), be equipped with kiln chamber (2), heating chamber (3), support rail (4) and wall post (5) admits air in furnace body (1), the below of kiln chamber (2) is located in heating chamber (3), support rail (4) are located between heating chamber (3) and kiln chamber (2), wall post (5) admits air hangs at kiln chamber (2) top, heating chamber (3) are equipped with main air inlet (31), support rail (4) are equipped with middle inlet channel (61), kiln chamber (2) are kept away from and are all equipped with a plurality of lateral part inlet ports (62) of arranging from last to down on two lateral walls of wall post (5) admits air, middle inlet channel (61) and each lateral part inlet port (62) all communicate with inlet port (3), wall post (5) are equipped with heating chamber wall post inlet channel (51) admits air, wall post inlet channel (51) docks with middle inlet channel (61) and communicates, the air inlet wall post (5) is provided with a plurality of rows of middle air inlet holes (52) on the side surface, and each row comprises a plurality of middle air inlet holes (52) which are arranged up and down.
2. The soft magnetic material double push plate sintering furnace according to claim 1, characterized in that: kiln chamber (2) top is equipped with spacing groove (21), limiting groove (21) are located to air inlet wall post (5) upper end, have the clearance between spacing groove (21) and air inlet wall post (5).
3. The soft magnetic material double push plate sintering furnace according to claim 2, characterized in that: a protective sleeve (22) is arranged in the limiting groove (21).
4. The soft magnetic material double push plate 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 tangent to the spherical surface (53).
5. The soft magnetic material double push plate sintering furnace according to claim 4, characterized in that: the support rail (4) is provided with two push plate grooves (41), a middle convex part (42) is arranged between the two push plate grooves (41), the middle air inlet channel (61) is arranged on the middle convex part (42), and the spherical surface (53) can be supported on the middle convex part (42).
6. The soft magnetic material double push plate 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 inlets (52) are uniformly arranged along the circumferential direction of the air inlet wall column (5).
7. The soft magnetic material double push plate sintering furnace according to any of claims 1 to 3, characterized in that: kiln chamber (2) are kept away from and all are equipped with lateral part inlet channel (63) in two lateral walls of air inlet wall post (5), lateral part inlet channel (63) and heating chamber (3) intercommunication, lateral part inlet port (62) and the lateral part inlet channel (63) intercommunication of place side of each side.
8. The soft magnetic material double push plate 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. The soft magnetic material double push plate 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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| Publication Number | Publication Date |
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| CN113606933A true CN113606933A (en) | 2021-11-05 |
| CN113606933B CN113606933B (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110871654.1A Active CN113606933B (en) | 2021-07-30 | 2021-07-30 | Soft magnetic material double-push plate sintering furnace |
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Citations (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 |
-
2021
- 2021-07-30 CN CN202110871654.1A patent/CN113606933B/en active Active
Patent Citations (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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| Publication number | Publication date |
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| CN113606933B (en) | 2023-04-28 |
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