CN113927036B - Immersed rotary hydrogen breaking furnace - Google Patents
Immersed rotary hydrogen breaking furnace Download PDFInfo
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- CN113927036B CN113927036B CN202111126628.2A CN202111126628A CN113927036B CN 113927036 B CN113927036 B CN 113927036B CN 202111126628 A CN202111126628 A CN 202111126628A CN 113927036 B CN113927036 B CN 113927036B
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- water tank
- water inlet
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Links
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 49
- 239000001257 hydrogen Substances 0.000 title claims abstract description 49
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 212
- 239000000498 cooling water Substances 0.000 claims description 49
- 238000010438 heat treatment Methods 0.000 claims description 44
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 20
- 150000002910 rare earth metals Chemical class 0.000 abstract description 20
- 239000000956 alloy Substances 0.000 abstract description 17
- 238000001816 cooling Methods 0.000 abstract description 16
- 229910045601 alloy Inorganic materials 0.000 abstract description 14
- 238000007654 immersion Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 150000002431 hydrogen Chemical class 0.000 description 3
- 229910000905 alloy phase Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/023—Hydrogen absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
Landscapes
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention relates to a hydrogen breaking furnace device of rare earth alloy, in particular to an immersed cooling rotary hydrogen breaking furnace. The invention adopts the following scheme: the utility model provides an immersion rotary type hydrogen breaking furnace, includes the stove courage of horizontal setting and the basin that is located the stove courage below, the part of the lower part of stove courage is located the basin, the bottom of basin is equipped with the dam, the length direction of dam with the axial of stove courage is parallel, the dam will the basin divide into water inlet tank and play water tank, water inlet tank is equipped with the water inlet, play water tank is equipped with the delivery port. The invention has the advantage of better cooling the bottom of the furnace to improve the uniformity of the product.
Description
Technical Field
The invention relates to a hydrogen breaking furnace device of rare earth alloy, in particular to an immersed cooling rotary hydrogen breaking furnace.
Background
The hydrogen breaking furnace utilizes the characteristic of hydrogen absorption expansion and breaking of the rare earth alloy phase to break the rare earth alloy, promotes the high purity preparation of rare earth alloy powder, and plays an important role in the preparation of near-single crystal powder in the fields of rare earth permanent magnets such as sintered neodymium iron boron and the like. When in use, the massive or flaky rare earth alloy is firstly subjected to hydrogen absorption, expansion and crushing in a hydrogen breaking furnace; after the full reaction, the hydrogen breaking furnace heats and dehydrogenates the product in the process of absorbing hydrogen of the rare earth alloy under the vacuumizing of the vacuum pump group. Because the rare earth alloy phase absorbs hydrogen in an exothermic process, the temperature of a hydrogen breaking furnace can spontaneously rise, and the excessive temperature of the hydrogen breaking furnace can lead the rare earth alloy to be incapable of fully absorbing hydrogen, expanding and breaking. In order to ensure that the rare earth alloy is fully expanded and crushed by hydrogen absorption, so that the sustainability and uniformity of the hydrogen absorption process of the rare earth alloy are ensured, the hydrogen breaking furnace is required to be cooled. Meanwhile, in order to ensure that the rare earth alloy is fully contacted with hydrogen so as to fully absorb hydrogen, expand and crush the rare earth alloy, thereby ensuring better uniformity of products, the rare earth alloy is subjected to hydrogen absorption treatment by adopting a rotary hydrogen crushing furnace.
The China national intellectual property office discloses an invention patent with the publication number of CN108907206A, which discloses a hydrogen breaking furnace, comprising a frame, a furnace body, a heating device and a cooling device; the furnace body is rotationally connected to the frame; the heating device comprises a horizontal guide rail, a first heating shell and a second heating shell, wherein the horizontal guide rail is perpendicular to the axis of the furnace body, the first heating shell is in sliding connection with the horizontal guide rail, the second heating shell is in sliding connection with the horizontal guide rail, the first heating shell is semicircular, the second heating shell is axisymmetric to the first heating shell, and inner cavities in clearance fit with the furnace body are formed in the first heating shell and the second heating shell; the cooling device comprises a first water spray pipe, a second water spray pipe and a semicircular groove, wherein the first water spray pipe is positioned right above the furnace body, the second water spray pipe is positioned right below the furnace body, and the semicircular groove is positioned right below the second water spray pipe; the first water spraying pipes are parallel to the axis of the furnace body, and a plurality of downward first water spraying ports are uniformly arranged at the lower parts of the first water spraying pipes; the axis of the second water spraying pipe is parallel to the axis of the furnace body, a plurality of upward second water spraying ports are uniformly formed in the upper portion of the second water spraying pipe, and a water outlet is formed in the semicircular groove.
The key point of cooling the hydrogen breaking furnace is to cool the block or sheet rare earth alloy materials in the hydrogen breaking furnace, and the block or sheet rare earth alloy materials are accumulated at the bottom of the furnace, so that the cooling of the hydrogen breaking furnace is to cool the bottom of the furnace of the hydrogen breaking furnace. In the practical use process of the scheme, after the cooling water sprayed by the first water spraying pipe and the second water spraying pipe contacts with the hydrogen breaking furnace, the cooling water is easily thrown out by the rotating hydrogen breaking furnace, and the cooling effect of the cooling water on the hydrogen breaking furnace is limited. The cooling water sprayed out of the first spray pipe does not directly cool the bottom of the hydrogen breaking furnace, so that the cooling effect of the massive or flaky rare earth alloy material can be weakened. Ultimately resulting in poor product uniformity for the above-described solution.
Disclosure of Invention
The invention aims to provide an immersed rotary hydrogen breaking furnace which is used for better cooling the bottom of a furnace liner to improve the uniformity of products.
The invention adopts the following scheme aiming at the purpose of the invention: the utility model provides an immersion rotary type hydrogen breaking furnace, includes the stove courage of horizontal setting and the basin that is located the stove courage below, the part of the lower part of stove courage is located the basin, the bottom of basin is equipped with the dam, the length direction of dam with the axial of stove courage is parallel, the dam will the basin divide into water inlet tank and play water tank, water inlet tank is equipped with the water inlet, play water tank is equipped with the delivery port.
When the cooling water cooling device is used, cooling water enters the water tank from the water inlet and contacts with the furnace pipe, so that the furnace pipe is cooled, the cooling water is transferred from the water inlet water tank to the water outlet water tank under the driving of the rotating furnace pipe, and finally enters the water outlet and leaves the water tank.
The bottom of the furnace pipe is not in cooling water, and the bottom of the furnace pipe is cooled by the cooling water, so that the rare earth alloy can absorb hydrogen at a proper temperature, and the rare earth alloy can fully absorb hydrogen, expand and crush, thereby improving the uniformity of products. The water temperature of the water inlet water tank contacted with the furnace pipe is higher, the water contacted with the furnace pipe can enter the water outlet water tank under the driving of the rotating furnace pipe, and the cooling water with lower temperature enters from the water inlet, so that the result that the temperature of the cooling water in the water inlet water tank is higher than that of the cooling water in the water outlet water tank is produced. In order to eliminate the temperature difference between the cooling water in the water inlet water tank and the cooling water in the water outlet water tank, heat exchange can occur between the bottom of the water inlet water tank and the bottom of the water outlet water tank, and finally the temperature of the cooling water in the water tank is kept at an equilibrium temperature. Because the dam is present, the bottom of the water inlet trough and the bottom of the water outlet trough are blocked to generate heat exchange, the temperature difference between the cooling water in the water inlet trough and the cooling water in the water outlet trough is kept, the temperature of the cooling water in the water inlet trough is lower than the equilibrium temperature, the heat exchange efficiency of the water inlet trough and the furnace liner is higher, the temperature of the cooling water in the water outlet trough is higher than the equilibrium temperature, and the cooling water with higher temperature is discharged from the water outlet. The cooling water entering the water tank has the same volume as the cooling water leaving the water tank, the temperature of the cooling water entering the water tank is the same, and the temperature of the cooling water leaving the water tank is higher than the equilibrium temperature by the baffle dam, so that the cooling efficiency of the cooling water is higher.
Preferably, one side of the dam, which is close to the water inlet groove, is an inclined plane or an arc surface. The side of the baffle dam, which is close to the water inlet groove, is provided with an inclined surface or an arc surface, which is beneficial to reducing the resistance of the baffle dam, thereby reducing the erosion of cooling water to the baffle dam. The cooling water at the bottom of the water inlet trough flows upwards, the cooling water in the water inlet trough flows conveniently, the cooling water on one side of the water inlet trough away from the dam is prevented from accumulating, and the utilization rate of the water inlet trough is improved.
Preferably, the water inlet is positioned at the bottom of the water inlet water tank, and the water outlet is positioned at the upper part of the side wall of the water outlet water tank. The water inlet is positioned at the bottom of the water inlet water tank, the water outlet is positioned at the upper part of the side wall of the water outlet water tank, and the path of cooling water is prolonged, so that the cooling water is fully contacted with the furnace, and more heat can be transferred from the furnace to the cooling water. Because the density of the hot water is smaller than that of the cold water, the water outlet is positioned at the upper part of the water outlet trough, and the cooling water with higher temperature can leave the water outlet trough from the water outlet.
Preferably, the outer wall of the furnace is provided with a plurality of arched grooves which extend along the circumferential direction of the furnace and are annular, and the plurality of arched grooves are arranged at intervals. The arch groove increases the contact area of the furnace pipe and the cooling water, thereby facilitating the heat exchange between the cooling water and the furnace pipe. The arched groove can facilitate the rotary furnace pipe to flow the cooling water from the water inlet water tank to the water outlet water tank. Because rare metal hydrogen absorption reaction is carried out in the furnace, high-pressure hydrogen is filled in the furnace, and the internal pressure of the furnace is high. The surface of the furnace pipe is provided with the arched groove, the arched groove can decompose the pressure in the furnace pipe, and can avoid stress concentration caused by sharp edges and corners, so that the strength of the furnace pipe is improved, cracks are prevented from being generated under cold and hot impact of the furnace pipe, and the crack is prevented from expanding, so that the safety of the device is improved.
Preferably, the water outlet comprises a water diversion part extending outwards from the outer wall of the upper part of the water outlet tank, the water diversion part is horizontally arranged, the water diversion part is provided with a water diversion tank which is opened upwards and is opened towards the inside of the water tank, and the bottom of the water diversion tank is provided with a water outlet which penetrates through the water tank vertically. The bottom of the water diversion groove is slightly lower than the end surface of the upper part of the water tank, so that the overflow of cooling water from the upper part of the water tank is avoided to disturb the working environment of the device. Because the water outlet is used for being connected with the drain pipe, the water outlet penetrating up and down can enable the device to be more compact in structure.
Preferably, a water receiving groove is arranged below the water outlet, and the water receiving groove is arranged around the water groove. The water pressure of water inlet is great, and the cooling water can strike the stove courage and outwards splash along the stove courage outer wall to and the junction of outlet and drain pipe is outwards dripped easily, and the cooling water that lies in the basin outside can be collected to the water receiving tank, avoids the cooling water excessive to influence the operational environment of this device.
Preferably, the electric heating furnace comprises two heating bodies for heating the furnace, wherein the two heating bodies are oppositely arranged, the furnace is positioned between the heating bodies, and the extending directions of the two heating bodies and the furnace are the same. The heating body is used for heating the furnace, and the furnace arranged oppositely enables the furnace to be heated more uniformly, so that the consistency and uniformity of products produced by the hydrogen breaking furnace are improved.
Preferably, the two heating bodies include heating grooves penetrating through the two heating bodies, the heating grooves are opened to the furnace, and the extending directions of the heating grooves and the furnace are the same. The heating tank enables the furnace to be heated more uniformly, and the consistency and uniformity of products produced by the hydrogen breaking furnace are improved.
Preferably, the furnace comprises two vertically arranged supporting frames, wherein the upper ends of the supporting frames are provided with through holes which are horizontally arranged, the furnace comprises connecting pipes which are coaxially arranged with the furnace, the connecting pipes are connected to the two ends of the furnace, and the two connecting pipes respectively penetrate through one through hole. The support frame supports the furnace pipe, and the furnace pipe can rotate around the shaft of the furnace pipe.
Preferably, the bottom surface of the water tank is a plane. The bottom of the furnace liner is a plane, and the volume of cooling water in the water tank in unit time is larger under the condition that the projection area of the water tank is the same as that of the horizontal plane, so that the furnace liner has the following advantages: the cooling water has sufficient time to cool the furnace; the water temperature of the cooling water is lower, and the cooling efficiency is higher; the cooling water is not easy to be carried out of the water tank and splashed out of the water tank, so that the working environment of the device is affected.
The invention has the following advantages: the cooling efficiency is higher, so that the uniformity of the product is better; the cooling water is not easy to splash out of the water tank, so that the working environment of the invention is not affected; the arched grooves are arranged to improve the strength of the furnace, avoid stress concentration of the furnace and improve the safety of the invention; the arrangement of the water outlet enables the structure of the device to be more compact.
Drawings
FIG. 1 is a state diagram of the present invention;
FIG. 2 is a perspective view of a sump and sump;
FIG. 3 is a cross-sectional view of the furnace, the flume, and the sump;
FIG. 4 is a cross-sectional view of the furnace;
fig. 5 is a perspective view of the support frame.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1, an immersed rotary hydrogen breaking furnace comprises a furnace 1 horizontally arranged along the front-back direction, two supporting frames for supporting the furnace 1, two heating bodies 7 for heating the furnace 1, and a water tank 2 for cooling the furnace.
As shown in fig. 2 and 3, the lower part of the furnace 1 is positioned in the water tank 2, the bottom of the water tank 2 is a plane, the bottom of the water tank 2 is provided with a baffle 3, the baffle 3 is close to a cambered surface 31 on one side of the water inlet water tank 21, the length direction of the baffle 3 is parallel to the axial direction of the furnace 1, and the baffle 3 divides the water tank 2 into the water inlet water tank 21 and the water outlet water tank 22.
As shown in fig. 2 and 3, the water inlet tank 21 is provided with a water inlet 4, and the water outlet tank 22 is provided with a water outlet 5. The water inlet 4 is positioned at the bottom of the water inlet tank 21, and the water outlet 5 is positioned at the upper part of the side wall of the water outlet tank 22. The water outlet 5 includes a water diversion portion 51 extending outward from the upper outer wall of the water outlet tank 22, the water diversion portion 51 is horizontally arranged, the water diversion portion 51 is provided with a water diversion groove 52 which is opened upward and opened inward of the water tank 2, and the bottom of the water diversion groove 52 is provided with a water outlet 53 penetrating up and down. A water receiving tank 6 is provided below the drain opening 53, and the water receiving tank 6 is provided around the water tank 2.
As shown in fig. 1 and 4, two ends of the furnace 1 are respectively connected with a connecting pipe 9, and the connecting pipes 9 are coaxial with the furnace 1 and are horizontally arranged. The outer wall of the furnace pipe 1 is provided with a plurality of arched grooves 11 which extend along the circumferential direction of the furnace pipe 1 and are annular, and the plurality of arched grooves 11 are arranged at intervals.
As shown in fig. 1, two heating bodies 7 are oppositely arranged along the left-right direction, the furnace pipe 1 is positioned between the heating bodies 7, and the extending directions of the two heating bodies 7 and the furnace pipe 1 are the same. The two heating bodies 7 include heating grooves 71 penetrating the two heating bodies 7, the heating grooves 71 open to the furnace 1, and the heating grooves 71 are the same as the direction in which the furnace 1 extends.
As shown in fig. 5, the two support frames 8 are vertically arranged, the upper ends of the two support frames 8 are respectively provided with a through hole 81 horizontally arranged, and the two support frames 8 are arranged at intervals along the front-rear direction. The two connecting pipes 9 are respectively positioned in one through hole 81.
When the cooling device is used, cooling water enters the water tank from the water inlet at the bottom of the water inlet water tank and contacts with the furnace pipe, so that the furnace pipe is cooled, the cooling water is transferred to the water outlet water tank from the water inlet water tank under the driving of the rotating furnace pipe, finally enters the water outlet at the upper part of the water outlet water tank, leaves the water tank and enters the water diversion part, and is discharged through the water outlet.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (7)
1. The utility model provides a submergence formula rotation type hydrogen breaking furnace which characterized in that, including horizontal stove courage (1) and the basin that is located the stove courage below, the part of the lower part of stove courage (1) is located basin (2), the bottom of basin (2) is equipped with retaining dam (3), retaining dam's length direction with the axial of stove courage is parallel, retaining dam (3) divide into basin (2) water inlet tank (21) and play water tank (22), water inlet tank (21) are equipped with water inlet (4), play water tank (22) are equipped with delivery port (5); one side of the dam (3) close to the water inlet groove (21) is an inclined plane or an arc surface (31); the water inlet (4) is positioned at the bottom of the water inlet water tank (21), the water outlet (5) is positioned at the upper part of the side wall of the water outlet water tank (22), the water outlet (5) comprises a water diversion part (51) which extends outwards from the outer wall of the upper part of the water outlet water tank (22), the water diversion part (51) is horizontally arranged, the water diversion part (51) is provided with a water diversion groove (52) which is opened upwards and is opened towards the inside of the water tank (2), and the bottom of the water diversion groove (52) is provided with a water outlet (53) which penetrates up and down; the circumference of the furnace pipe (1) spans the water inlet water tank (21), the retaining dam (3) and the water outlet water tank (22); cooling water enters the water tank from the water inlet at the bottom of the water inlet water tank and contacts with the furnace pipe so as to cool the furnace pipe, and the cooling water is transferred to the water outlet water tank from the water inlet water tank under the driving of the rotating furnace pipe, finally enters the water outlet at the upper part of the water outlet water tank, leaves the water tank and enters the water diversion part and is discharged through the water outlet.
2. The immersed rotary hydrogen breaking furnace according to claim 1, characterized in that the outer wall of the furnace (1) is provided with a plurality of arched grooves (11) extending along the circumferential direction of the furnace (1) and being annular, and the plurality of arched grooves (11) are arranged at intervals.
3. The immersed rotary hydrogen breaking furnace according to claim 1, characterized in that a water receiving tank (6) is arranged below the water outlet (53), and the water receiving tank (6) is arranged around the water tank (2).
4. The immersed rotary hydrogen breaking furnace according to claim 1, characterized by comprising two heating bodies (7) for heating the furnace (1), wherein the two heating bodies (7) are oppositely arranged, the furnace (1) is positioned between the heating bodies (7), and the two heating bodies (7) and the furnace (1) have the same extending direction.
5. The submerged rotary hydrogen breaking furnace according to claim 4, characterized in that the two heating bodies (7) comprise a heating groove (71) penetrating the two heating bodies (7), the heating groove (71) being open to the furnace (1), the heating groove (71) being in the same extension direction as the furnace (1).
6. The immersed rotary hydrogen breaking furnace according to claim 1, comprising two vertically arranged supporting frames (8), wherein the upper ends of the supporting frames (8) are provided with through holes (81) horizontally arranged, the furnace (1) comprises two connecting pipes (9) coaxially arranged with the furnace (1), the two connecting pipes (9) are respectively connected to one of the two ends of the furnace (1), and the two connecting pipes (9) respectively penetrate through one of the through holes (81).
7. Immersed rotary hydrogen breaking furnace according to claim 1, characterized in that the bottom surface of the water tank (2) is planar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111126628.2A CN113927036B (en) | 2021-09-26 | 2021-09-26 | Immersed rotary hydrogen breaking furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111126628.2A CN113927036B (en) | 2021-09-26 | 2021-09-26 | Immersed rotary hydrogen breaking furnace |
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| Publication Number | Publication Date |
|---|---|
| CN113927036A CN113927036A (en) | 2022-01-14 |
| CN113927036B true CN113927036B (en) | 2024-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111126628.2A Active CN113927036B (en) | 2021-09-26 | 2021-09-26 | Immersed rotary hydrogen breaking furnace |
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| CN (1) | CN113927036B (en) |
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|---|---|---|---|---|
| US6403024B1 (en) * | 1999-02-19 | 2002-06-11 | Sumitomo Special Metals Co., Ltd. | Hydrogen pulverizer for rare-earth alloy magnetic material powder using the pulverizer, and method for producing magnet using the pulverizer |
| CN201279910Y (en) * | 2008-09-16 | 2009-07-29 | 苏州工业园区和昌电器有限公司 | Cooling trough of double-screw extruder |
| JP2012099520A (en) * | 2010-10-29 | 2012-05-24 | Tdk Corp | Manufacturing method for r-t-b-based magnetic powder |
| CN204196215U (en) * | 2014-10-30 | 2015-03-11 | 温州南北磁性用品有限公司 | A kind of bosh of rubber magnet extruder |
| CN207103848U (en) * | 2017-08-29 | 2018-03-16 | 宁德市星宇科技有限公司 | A kind of cooling device for rotary hydrogen crushing furnace |
| CN208558259U (en) * | 2018-08-09 | 2019-03-01 | 洛阳一缆电器有限公司 | A kind of water-cooling groove gradually to cool down |
| CN210548113U (en) * | 2019-06-05 | 2020-05-19 | 宁波合力磁材技术有限公司 | Rotary crushing furnace |
| CN213701764U (en) * | 2020-11-04 | 2021-07-16 | 宁波和道磁性材料有限公司 | Hydrogen crushing furnace device |
| CN214161397U (en) * | 2020-09-30 | 2021-09-10 | 绵阳西磁科技有限公司 | Cooling device for hydrogen crushing furnace |
-
2021
- 2021-09-26 CN CN202111126628.2A patent/CN113927036B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6403024B1 (en) * | 1999-02-19 | 2002-06-11 | Sumitomo Special Metals Co., Ltd. | Hydrogen pulverizer for rare-earth alloy magnetic material powder using the pulverizer, and method for producing magnet using the pulverizer |
| CN201279910Y (en) * | 2008-09-16 | 2009-07-29 | 苏州工业园区和昌电器有限公司 | Cooling trough of double-screw extruder |
| JP2012099520A (en) * | 2010-10-29 | 2012-05-24 | Tdk Corp | Manufacturing method for r-t-b-based magnetic powder |
| CN204196215U (en) * | 2014-10-30 | 2015-03-11 | 温州南北磁性用品有限公司 | A kind of bosh of rubber magnet extruder |
| CN207103848U (en) * | 2017-08-29 | 2018-03-16 | 宁德市星宇科技有限公司 | A kind of cooling device for rotary hydrogen crushing furnace |
| CN208558259U (en) * | 2018-08-09 | 2019-03-01 | 洛阳一缆电器有限公司 | A kind of water-cooling groove gradually to cool down |
| CN210548113U (en) * | 2019-06-05 | 2020-05-19 | 宁波合力磁材技术有限公司 | Rotary crushing furnace |
| CN214161397U (en) * | 2020-09-30 | 2021-09-10 | 绵阳西磁科技有限公司 | Cooling device for hydrogen crushing furnace |
| CN213701764U (en) * | 2020-11-04 | 2021-07-16 | 宁波和道磁性材料有限公司 | Hydrogen crushing furnace device |
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| CN113927036A (en) | 2022-01-14 |
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