CN108971499B - Hydrogen crushing furnace and cooling method thereof - Google Patents
Hydrogen crushing furnace and cooling method thereof Download PDFInfo
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- CN108971499B CN108971499B CN201811096200.6A CN201811096200A CN108971499B CN 108971499 B CN108971499 B CN 108971499B CN 201811096200 A CN201811096200 A CN 201811096200A CN 108971499 B CN108971499 B CN 108971499B
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- 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
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Abstract
The invention relates to a hydrogen crushing furnace, which comprises a furnace pipe, an electric heating furnace and a cooling device, wherein the furnace pipe comprises a furnace pipe body and two first rotating shafts which are respectively arranged at two ends of the furnace pipe body, the cooling device comprises a cooling tank positioned right below the furnace pipe, a first lifting device used for driving the cooling tank to lift, an exhaust hood positioned right above the furnace pipe and a second lifting device used for driving the exhaust hood to lift, a first water inlet pipe and a drain pipe are arranged on the cooling tank, an exhaust pipe is arranged on the exhaust hood, and the exhaust pipe is communicated with a negative pressure device. The hydrogen crushing furnace provided by the invention has higher cooling efficiency, and simultaneously, a large amount of water vapor generated in the cooling process can be effectively controlled or discharged, so that the working environment of workers is improved. Meanwhile, the invention also provides a cooling method of the hydrogen crushing furnace.
Description
Technical Field
The invention relates to the technical field of permanent magnet preparation, in particular to a hydrogen crushing furnace and a cooling method of the hydrogen crushing furnace.
Background
The hydrogen crushing furnace is used for forming ingot-shaped or flaky rare earth alloy materials into powder by non-mechanical force. The hydrogen reacts with the rare earth alloy (such as Nd2Fe14B) to produce crystal fracture and transgranular fracture in the hydrogen absorption and desorption process of the rare earth alloy (such as Nd-Fe-B alloy) to cause the rare earth alloy to be pulverized to form an embrittlement and crushing process, thereby obtaining the rare earth alloy powder with a certain particle size.
The existing hydrogen crushing furnace mainly comprises a rotatable furnace pipe, an electric heating furnace positioned outside the furnace pipe and a liftable cooling device positioned right below the furnace pipe, wherein the electric heating furnace mainly comprises a left furnace body and a right furnace body which can be opened and closed, and the cooling device comprises a water spray pipe and a water collecting tank with an upward opening. The cooling mode of the existing hydrogen crushing furnace has two problems: 1) the cooling efficiency is low; 2) a large amount of water vapor is generated in the cooling process, the working environment has high humidity, and workers are susceptible to diseases such as rheumatism after working for a long time.
Disclosure of Invention
In view of the above, the present invention is directed to a hydrogen crushing furnace, which has a higher cooling efficiency, and a large amount of water vapor generated during the cooling process can be effectively controlled or removed, thereby improving the working environment of workers.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a hydrogen crushing furnace, includes stove courage, electric heating furnace and cooling device, the stove courage includes stove courage body and two first pivots that set up respectively at stove courage body both ends, cooling device is including being located the cooling bath under the stove courage, being used for the drive the first elevating gear that the cooling bath goes up and down, be located the exhaust hood directly over the stove courage and be used for the drive the second elevating gear that the exhaust hood goes up and down, be equipped with first inlet tube and drain pipe on the cooling bath, be equipped with the blast pipe on the exhaust hood, blast pipe and negative pressure device intercommunication.
Furthermore, the inboard of exhaust hood is provided with many shower along length direction interval, many the shower communicates with a second inlet tube, be equipped with a plurality of nozzles on the shower.
Further, the shower is arc.
Furthermore, a descaling device is arranged in the exhaust hood and comprises a steel wire brush roller rotatably arranged on the inner side of the exhaust hood and a driving mechanism for driving the steel wire brush roller to rotate.
Further, the driving mechanism comprises a base fixed on the inner side of the exhaust hood, a second rotating shaft rotatably arranged on the base, a driving belt wheel and a friction wheel coaxially sleeved on the second rotating shaft, a driven belt wheel coaxially sleeved at the end part of the steel wire brush roller, and a transmission belt tightly sleeved on the driving belt wheel and the driven belt wheel, wherein the diameter of the friction wheel is larger than that of the driving belt wheel, and the friction wheel can form transmission fit with the first rotating shaft along with the descending process of the exhaust hood.
Furthermore, an elastic sleeve is sleeved outside the friction wheel.
Furthermore, the surface of the part of the first rotating shaft, which is in contact with the elastic sleeve, is provided with anti-skid grains.
Further, the steel wire brush roller is located right below the spray pipe and right above the furnace pipe body.
Further, the upper end surface of the cooling groove and the lower end surface of the exhaust hood may contact and maintain a sealed state.
The invention also provides a cooling method suitable for the hydrogen crushing furnace, which comprises the following steps:
s1, keeping the furnace pipe rotating, opening the electric heating furnace, starting the first lifting device to make the cooling tank rise to the outer side of the lower end of the furnace pipe body, and starting the second lifting device to make the exhaust hood descend to the outer side of the upper end of the furnace pipe body;
s2, conveying cooling water into the cooling tank through the first water inlet pipe, keeping the water level of the cooling water in the cooling tank higher than the bottom of the furnace pipe body, and enabling the cooling water to flow out of the cooling tank through the drain pipe;
and S3, starting the negative pressure device, and pumping away steam generated in the cooling process of the furnace pipe body through the exhaust hood and the exhaust pipe.
The invention has the beneficial effects that: the hydrogen crushing furnace provided by the invention has higher cooling efficiency, and simultaneously, a large amount of water vapor generated in the cooling process can be effectively controlled or discharged, so that the working environment of workers is improved.
Drawings
FIG. 1 is a schematic front view of the present invention in a cooling configuration;
FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1;
FIG. 3 is an enlarged view of the portion B of FIG. 2;
fig. 4 is a schematic view of the structure of the present invention after cooling.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In this application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 4, the present invention provides a hydrogen crushing furnace, which comprises a furnace 10, an electric heating furnace (not shown in the drawings), a furnace 10 rotation driving mechanism (not shown in the drawings), a vacuum-pumping device (not shown in the drawings) for pumping vacuum in the furnace 10, an alignment device (not shown in the drawings) for charging hydrogen in the furnace 10, and a cooling device.
The furnace 10 comprises a furnace body 11 and two first rotating shafts 12 which are respectively arranged at two ends of the furnace body 11, the two first rotating shafts 12 are coaxial, the first rotating shafts 12 are of a hollow structure and are communicated with the furnace body 11, the furnace body 11 is communicated with a vacuumizing device and a gas distribution device in a sealing way through the first rotating shafts 12, an openable furnace door is arranged on the furnace body 11, the electric heating furnace comprises a left furnace body and a right furnace body which can be opened and closed, and rollers are arranged at the lower parts of the left furnace body and the right furnace body, so that the movement can be realized.
The cooling device comprises a cooling tank 20 positioned right below the furnace pipe 10, a first lifting device 30 used for driving the cooling tank 20 to lift, an exhaust hood 40 positioned right above the furnace pipe 10 and a second lifting device 50 used for driving the exhaust hood 40 to lift, wherein the cooling tank 20 and the exhaust hood 40 are roughly in a semi-cylindrical shape, a first water inlet pipe 21 and a drain pipe 22 are arranged on the cooling tank 20, the first water inlet pipe 21 can be independently connected with a water inlet pump and also can be communicated with the drain pipe 22 to form a circulating pipeline, and a circulating water pump and a device for cooling circulating cooling water are arranged on the circulating pipeline. The exhaust hood 40 is provided with an exhaust pipe 41, and the exhaust pipe 41 is communicated with a negative pressure device (not shown in the figure), which is an air pump. Preferably, the first elevating means 30 and the second elevating means 50 are both air cylinders.
During cooling, the furnace pipe body 11 keeps rotating, the cooling water in the cooling tank 20 directly contacts with the surface of the bottom of the furnace pipe body 11, so that the furnace pipe body 11 can be rapidly cooled, and the water vapor generated in the cooling process is directly exhausted through the exhaust hood 40 and the exhaust pipe 41.
As a further improvement of the above solution, a plurality of shower pipes 60 are provided at intervals along the length direction inside the exhaust hood 40, the shower pipes 60 communicate with a second water inlet pipe 61, and a plurality of nozzles 62 are provided on the shower pipes 60. A plurality of spray nozzles 62 are distributed along the length of the shower 60. The cooling bath 20 cools the furnace body 11 below the furnace body 11, and the shower pipe 60 cools the furnace body 11 above the furnace body 11, thereby further improving cooling efficiency.
As a further improvement of the above solution, the shower pipe 60 is curved so that the nozzle 62 can be directed to the surface of the furnace body 11, and the spraying effect is the best.
As a further improvement of the above scheme, a descaling device is further arranged in the exhaust hood 40, the descaling device comprises a wire brush roller 70 rotatably arranged on the inner side of the exhaust hood 40 and a driving mechanism 80 for driving the wire brush roller 70 to rotate, and the wire brush roller 70 is arranged on the outer side of the furnace pipe body 11 in parallel with the axis of the furnace pipe body 11. Because the scale is easily generated on the surface of the furnace pipe body 11 in the cooling process, the scale can reduce the heat transfer efficiency of the furnace pipe body 11, thereby reducing the heating and cooling speed of the furnace pipe body 11, and ensuring that no scale is accumulated outside the furnace pipe body 11 by arranging the scale removing device.
As a further improvement of the above scheme, the driving mechanism 80 includes a base 81 fixed inside the exhaust hood 40, a second rotating shaft 82 rotatably disposed on the base 81, a driving pulley 83 and a friction wheel 84 coaxially disposed on the second rotating shaft 82, a driven pulley 86 coaxially disposed on the end of the wire brush roller 70, and a transmission belt 87 tightly disposed outside the driving pulley 83 and the driven pulley 86, preferably, the driving mechanism 80 is disposed on each of two sides of the furnace body 11, the diameter of the friction wheel 84 is larger than that of the driving pulley 83, the friction wheel 84 can form a transmission fit with the first rotating shaft 12 in the process of descending the exhaust hood 40, that is, after the friction wheel 84 descends to a set position along with the exhaust hood 40, the friction wheel 84 just contacts with the first rotating shaft 12, and the friction wheel 84 is driven to rotate due to the rotation of the first rotating shaft 12, the wire brush roller 70 is driven after being driven by a belt driving structure of the driving pulley 83, the driven pulley 86, and the driving belt 87. Of course, the rotation speed of the wire brush roller 70 is different from the rotation speed of the furnace pipe body 11, so that the rotation of the wire brush roller 70 can achieve the purpose of removing the scale on the surface of the furnace pipe body 11. The driving mechanism drives the wire brush roller 70 to rotate by using the power generated when the furnace 10 rotates, thereby eliminating the trouble and cost increase of separately setting a power source to drive the wire brush roller 70 to rotate.
As a further improvement of the above solution, the elastic sleeve 85 is sleeved outside the friction wheel 84, and after the friction wheel 84 descends along with the exhaust hood 40, due to the existence of the elastic sleeve 85, the friction wheel 84 and the first rotating shaft 12 do not contact with each other, thereby ensuring the reliability of the driving mechanism 80.
As a further improvement of the above solution, the surface of the portion of the first rotating shaft 12 contacting the elastic sleeve 85 is provided with anti-slip patterns 121, and the anti-slip patterns 121 prevent slipping between the first rotating shaft 12 and the elastic sleeve 85, thereby further improving the reliability of the driving mechanism 80.
As a further improvement of the scheme, the wire brush roller 70 is positioned right below the spray pipe 60 and right above the furnace pipe body 11, so that the structure is more reasonable.
As a further improvement of the above, it is preferable that the upper end surface of the cooling bath 20 and the lower end surface of the exhaust hood 40 are in contact with each other and maintain a sealed state, and elastic gaskets 90 are respectively provided on the upper end surface of the cooling bath 20 and the lower end surface of the exhaust hood 40, so that sealing is maintained by the contact of the two elastic gaskets 90. The above arrangement prevents water vapor from escaping from the gap between the cooling bath 20 and the exhaust hood 40, thereby further improving the working environment.
The invention also provides a cooling method suitable for the hydrogen crushing furnace, which comprises the following steps:
s1, keeping the furnace pipe 10 rotating, opening the electric heating furnace, starting the first lifting device 30 to lift the cooling tank 20 to the outer side of the lower end of the furnace pipe body 11, and starting the second lifting device 50 to lower the exhaust hood 40 to the outer side of the upper end of the furnace pipe body 11;
s2, conveying cooling water into the cooling tank 20 through the first water inlet pipe 21, keeping the water level of the cooling water in the cooling tank 20 higher than the bottom of the furnace pipe body 11, simultaneously keeping the cooling water not to overflow the cooling tank 20, and enabling the cooling water to flow out of the cooling tank 20 through the drain pipe 22;
s3, starting a negative pressure device, and pumping steam generated in the cooling process of the furnace pipe body 11 away through the exhaust hood 40 and the exhaust pipe 41;
and S4, when the furnace pipe body 11 meets the cooling requirement, stopping sending water into the cooling tank 20 and pumping steam out of the exhaust hood 40, starting the first lifting device 30 to move the cooling tank 20 downwards, and starting the second lifting device 50 to move the exhaust hood 40 upwards.
As a further improvement of the above, in step S2, the method further includes spraying cooling water onto the upper surface of the furnace pipe body 11 through the second water inlet pipe 61 and the plurality of spray pipes 60.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides a hydrogen crushing furnace, includes stove courage, electric heating furnace and cooling device, the stove courage includes stove courage body and two first pivots that set up respectively at stove courage body both ends, its characterized in that: the cooling device comprises a cooling tank positioned right below the furnace pipe, a first lifting device used for driving the cooling tank to lift, an exhaust hood positioned right above the furnace pipe and a second lifting device used for driving the exhaust hood to lift, wherein a first water inlet pipe and a drain pipe are arranged on the cooling tank, an exhaust pipe is arranged on the exhaust hood, and the exhaust pipe is communicated with the negative pressure device; a plurality of spray pipes are arranged at intervals along the length direction on the inner side of the exhaust hood and are communicated with a second water inlet pipe, a plurality of nozzles are arranged on the spray pipes, and the spray pipes are arc-shaped; a descaling device is also arranged in the exhaust hood and comprises a steel wire brush roller which is rotatably arranged on the inner side of the exhaust hood and a driving mechanism for driving the steel wire brush roller to rotate; the driving mechanism comprises a base fixed on the inner side of the exhaust hood, a second rotating shaft rotatably arranged on the base, a driving belt wheel, a friction wheel, a driven belt wheel and a transmission belt, wherein the driving belt wheel and the friction wheel are coaxially arranged on the second rotating shaft, the driven belt wheel is coaxially arranged at the end part of the steel wire brush roller, the driving belt wheel is tightly sleeved on the driving belt wheel and the driven belt wheel, the diameter of the friction wheel is larger than that of the driving belt wheel, and the friction wheel is matched with the first rotating shaft in a transmission mode in the descending process of the exhaust hood.
2. The hydrogen crushing furnace according to claim 1, characterized in that: the friction wheel is sleeved with an elastic sleeve.
3. The hydrogen crushing furnace according to claim 2, characterized in that: and anti-skid grains are arranged on the surface of the part of the first rotating shaft, which is in contact with the elastic sleeve.
4. The hydrogen crushing furnace according to claim 3, characterized in that: the steel wire brush roller is positioned right below the spray pipe and right above the furnace pipe body.
5. The hydrogen crushing furnace according to claim 4, characterized in that: the upper end surface of the cooling groove and the lower end surface of the exhaust hood can contact each other and maintain a sealed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811096200.6A CN108971499B (en) | 2018-09-19 | 2018-09-19 | Hydrogen crushing furnace and cooling method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811096200.6A CN108971499B (en) | 2018-09-19 | 2018-09-19 | Hydrogen crushing furnace and cooling method thereof |
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| Publication Number | Publication Date |
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| CN108971499A CN108971499A (en) | 2018-12-11 |
| CN108971499B true CN108971499B (en) | 2021-10-22 |
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| CN201811096200.6A Active CN108971499B (en) | 2018-09-19 | 2018-09-19 | Hydrogen crushing furnace and cooling method thereof |
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| CN113686158B (en) * | 2021-08-24 | 2023-06-16 | 江西荧光磁业有限公司 | Intelligent cooling device of magnetic steel sintering furnace |
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| GB916786A (en) * | 1959-07-04 | 1963-01-30 | Lorraine Houilleres | Method of and device for preventing an issue of gases or smokes when charging a furnace, more particularly a coke oven |
| LU86648A1 (en) * | 1986-11-06 | 1988-06-13 | Wurth Paul Sa | EVACUATION SYSTEM FOR EMANATIONS IN THE TAPPING HOLE AREA OF SHAFT OVENS |
| CN100589894C (en) * | 2008-05-09 | 2010-02-17 | 太原市通泽成套设备有限公司 | Forced cooling device of round piece |
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|---|---|---|---|---|
| JP2005163066A (en) * | 2003-11-28 | 2005-06-23 | Tdk Corp | Apparatus for manufacturing alloy powder for permanent magnet and method therefor |
| CN202898596U (en) * | 2012-11-08 | 2013-04-24 | 王勇飞 | Light-emitting diode (LED) epitaxial wafer reacting furnace |
| CN204603277U (en) * | 2015-01-07 | 2015-09-02 | 赣州金玛机械设备有限公司 | A kind of Rotating caster |
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