CN202778652U - Jet mill removing oxygen by circulating flow - Google Patents
Jet mill removing oxygen by circulating flow Download PDFInfo
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- CN202778652U CN202778652U CN 201220459448 CN201220459448U CN202778652U CN 202778652 U CN202778652 U CN 202778652U CN 201220459448 CN201220459448 CN 201220459448 CN 201220459448 U CN201220459448 U CN 201220459448U CN 202778652 U CN202778652 U CN 202778652U
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Abstract
The utility model discloses a jet mill removing oxygen by a circulating flow, comprising a grinding chamber and a powder filter, wherein the powder filter, the grinding chamber, a gas storage tank, a nitrogen compressor and a compressed gas freeze-drying unit form a circulating loop; simultaneously, a nitrogen source is further arranged on the circulating loop; and a manual adjusting valve is further connected with the air storage tank, the nitrogen compressor and the compressed gas freeze-drying unit in parallel, on the circulating loop. Additionally, a spring automatic oxygen-removing valve is arranged between the nitrogen source and the powder filter. The jet mill removing oxygen by a circulating flow disclosed by the utility model is simple in process, convenient to machine, and is capable of increasing the working efficiency of equipment and reducing energy consumption while ensuring machining safety.
Description
Technical field
The utility model relates to the airflow milling device, is specially a kind of circular flow deoxygenation formula airflow milling for Nd-Fe-Bo permanent magnet material powder process manufacture field.
Background technology
In the neodymium-iron-boron magnetic material manufacturing, often need to use airflow milling, airflow milling is generally used in the neodymium-iron-boron magnetic material pulverizing process, by the compressor output high-pressure gas, and these gases at high pressure are accelerated to be supersonic airstream, be ejected into the center abrasive areas of grinder, drive material and tell flight and mutually clash into and reach the effect that grinds in abrasive areas.Simultaneously, behind comminuting matter, material risen and then carry out thickness and separate, separate pulverizing fine powder up to standard, and will meal not up to standard again send into milling zone and continue pulverizing, know and told after reaching granularity requirements.
Because the special nature of neodymium-iron-boron magnetic material; need to carry out deoxygenation as protective gas with high pure nitrogen protects Nd-Fe-B powder not oxidized; in this process; new fresh oxygen arrives cooling driers through nitrogen compressor after entering airflow milling; to carry out the Compressed Gas major part that dynamic deoxygenation discharges be the fresh nitrogen that has just covered machine because the unloading of cooling driers compresses switch; and the original oxygen-containing gas in equipment the inside only has a part seldom; so the start deoxygenation time is substantially more than half an hour; and be in sealing state owing to equipment in the pulverizing process after the deoxygenation; cause mending the nitrogen pressure regulation and also be difficult to control; gas flow during deoxygenation is larger, so just causes operational inconvenience and nitrogen input quantity; processing time; the waste of electric weight.
The utility model content
The technical problem that the utility model solves is to provide circular flow deoxygenation formula airflow milling, replaces recirculated water as cooling system with cooling-water machine, to solve the shortcoming in the above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
Circular flow deoxygenation formula airflow milling, comprise grinding chamber and Powdex filter, wherein, Powdex filter is series at the grinding chamber rear end, and form a closed circuit with air accumulator, nitrogen compressor and Compressed Gas cooling driers, simultaneously, on this closed circuit, also be provided with a nitrogen source of the gas, described nitrogen source of the gas and is provided with an automatic deoxygenation valve of spring between nitrogen source of the gas and Powdex filter between nitrogen compressor and Powdex filter; In addition, on closed circuit, also be parallel with a manual modulation valve with air accumulator, nitrogen compressor and Compressed Gas cooling driers.
In the utility model, described nitrogen source of the gas preferably adopts fresh nitrogen gas tank, also can directly connect nitrogen making machine.
In the utility model, the automatic deoxygenation valve opening of described spring is adjustable, in order to control the size of deoxygenation amount.
Beneficial effect: the utility model is simple in structure, convenient and practical, when mending the nitrogen pressure regulation, can control and embody faster, intuitively the height of nitrogen compressor pressure, brought larger facility to operation like this, and when running into emergency case (such as power failure, compressor fault), also can in time from the release of the automatic deoxygenation valve of spring, avoid both having improved efficient in the use because of the not generation of the timely secondary security incident that causes of release, saved again the energy, thereby be suitable for promoting the use of.
Description of drawings
Fig. 1 is the schematic diagram of the utility model preferred embodiment.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Schematic diagram referring to the circular flow deoxygenation formula airflow milling preferred embodiment of Fig. 1, in the present embodiment, the arrow direction is the trend of gas flow, schematic diagram can be seen thus, grinding chamber 2 is positioned at the upstream of Powdex filter 1, control amount of grinding by grinding valve 3, between Powdex filter 1 rear portion and nitrogen source of the gas 7, also be provided with the automatic deoxygenation valve 8 of spring.And between grinding chamber 2 and nitrogen source of the gas 7, also be in series with successively air accumulator 4, nitrogen compressor 5 and Compressed Gas cooling driers 6 forms a closed circuit, simultaneously, also be parallel with a manual modulation valve 9 at same position, this manual modulation valve 9 and air accumulator 4, nitrogen compressor 5 and closed circuit of Compressed Gas cooling driers 6 same compositions.
When work, after fresh nitrogen circulation one circle was returned, the gas device for transferring with oxygen, the gas major part of discharging was oxygen-containing gas.Gas flow also than many for having lacked before improving, can shorten to the available machine time in 5 ~ 10 minutes, and has reached simultaneously the technique powder process job requirements of Nd-Fe-B permanent magnetic powder processing.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. circular flow deoxygenation formula airflow milling, comprise grinding chamber and Powdex filter, it is characterized in that, Powdex filter is series at the grinding chamber rear end, and form a closed circuit with air accumulator, nitrogen compressor and Compressed Gas cooling driers, simultaneously, on this closed circuit, also be provided with a nitrogen source of the gas, described nitrogen source of the gas and is provided with an automatic deoxygenation valve of spring between nitrogen source of the gas and Powdex filter between nitrogen compressor and Powdex filter; In addition, on closed circuit, also be parallel with a manual modulation valve with air accumulator, nitrogen compressor and Compressed Gas cooling driers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220459448 CN202778652U (en) | 2012-09-11 | 2012-09-11 | Jet mill removing oxygen by circulating flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220459448 CN202778652U (en) | 2012-09-11 | 2012-09-11 | Jet mill removing oxygen by circulating flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202778652U true CN202778652U (en) | 2013-03-13 |
Family
ID=47805996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220459448 Expired - Fee Related CN202778652U (en) | 2012-09-11 | 2012-09-11 | Jet mill removing oxygen by circulating flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202778652U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105501718A (en) * | 2015-12-01 | 2016-04-20 | 中磁科技股份有限公司 | Fast oxygen exhaust system for powder silo |
| CN112024087A (en) * | 2020-08-06 | 2020-12-04 | 包头永真静平磁性材料科技有限公司 | A air current grinds device for neodymium iron boron production |
-
2012
- 2012-09-11 CN CN 201220459448 patent/CN202778652U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105501718A (en) * | 2015-12-01 | 2016-04-20 | 中磁科技股份有限公司 | Fast oxygen exhaust system for powder silo |
| CN112024087A (en) * | 2020-08-06 | 2020-12-04 | 包头永真静平磁性材料科技有限公司 | A air current grinds device for neodymium iron boron production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 341600 Ganzhou, Xinfeng Province Industrial Park in the south end of the road Patentee after: JIANGXI SENYANG TECHNOLOGY CO., LTD. Address before: 341600 Ganzhou, Xinfeng Province Industrial Park in the south end of the road Patentee before: JIANGXI LEIYUAN PERMANENT MAGNETIC MATERIALS CO.,LTD |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20180911 |