CN208526909U - A kind of no bottom material airflow milling powder device - Google Patents
A kind of no bottom material airflow milling powder device Download PDFInfo
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- CN208526909U CN208526909U CN201820782575.7U CN201820782575U CN208526909U CN 208526909 U CN208526909 U CN 208526909U CN 201820782575 U CN201820782575 U CN 201820782575U CN 208526909 U CN208526909 U CN 208526909U
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- 239000000843 powder Substances 0.000 title claims abstract description 79
- 238000003801 milling Methods 0.000 title claims abstract description 60
- 239000000463 material Substances 0.000 title claims abstract description 52
- 238000000227 grinding Methods 0.000 claims abstract description 38
- 239000007921 spray Substances 0.000 claims abstract description 22
- 238000000926 separation method Methods 0.000 claims abstract description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005243 fluidization Methods 0.000 abstract description 6
- 239000003082 abrasive agent Substances 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000008187 granular material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Disintegrating Or Milling (AREA)
Abstract
The utility model is a kind of no bottom material airflow milling powder device, the high pressure draught projected in airflow milling by three side spray air inlets and a bottom spirt gas is in grinding chamber and pulverized fluidized bed is collectively formed in the material of addition, effectively head-on collision becomes fine powder to powder in a fluidized bed, when powder particle size is sufficiently small, go out powder from powder channel by high-speed rotating separation wheel, bottom spray pressure gauge and bottom is added to spray power manual modulation valve at the nozzle of airflow milling bottom, so as to accurately adjust airflow milling bottom orifice gas pressure, the normal morphology that bottom nozzle exit pressure guarantees grinding chamber high pressure gas fluidisation bed is reduced when grinding room and expecting less, airflow milling bottom nozzle exit pressure and grinding chamber weight of material and the out best correspondence of powder sorting wheel speed three are had found simultaneously, control the corresponding relationship between three can prevent grind room powder when abrasive material is less be mixed into thick Grain.The utility model can save Material Cost, improve production efficiency, while also solving in airflow milling powder and generating coarse grained major safety risks.
Description
Technical field
The utility model relates to the flouring technology field of sintered NdFeB, in particular to a kind of no bottom material airflow milling powder dress
It sets.
Background technique
Airflow milling is also known as fluid energy mill, mainly by following several types: spiral jet pulverizer, circulating airflow milling, to spray formula
Airflow milling, target formula airflow milling, fluidization are to spray formula airflow milling.
For airflow milling used in the industry generally to spray formula airflow milling, cardinal principle is using high-speed flow as energy
A kind of ultrafine crusher of medium.Entered with the gas of several atmospheric pressure through nozzle and mixes in crushing chamber with material and transport at a high speed
It is dynamic.During exercise, material is sheared with air-flow and is crushed with the impact of other component by the shock between particle itself.
Each get the particle of 1 to several μm.Crushing material is than generally 1~40, and material processing capacity is smaller, and air consumption is larger.
Airflow milling is to be widely used in the superfine powder of nonmetallic mineral and industrial chemicals etc. as one of research of super-pine crush equipment
It is broken, it has a characteristic that
(1) product fineness with, narrower particle size distribution, particle surface are smooth, grain shape is regular, it is with high purity, active it is big,
Good dispersion.
(2) product is contaminated few.Material is crushed, powder because air-flow crusher is the autogenous grinding principle according to material
Broken cavity is few to the pollution of product, is thus particularly suited for the crushing material that drug etc. does not allow to be stain by metal and other impurities.
(3) it is suitble to crush low melting point and temperature-sensitive material and biological activity product, because airslide disintegrating mill is with compressed air
For power, adiabatic expansion of the compressed gas at nozzle can be such that system temperature reduces, so will not generate in the course of work a large amount of
Heat.
(4) production process is continuous, and production capacity is big, automatic control, high degree of automation.
(5) protective gas can be used to pressurize in airflow milling grinding system self-loopa to produce, so that isolation is also easy to produce chemistry instead
The gas answered.
Powder processed is the critical process of sintered NdFeB, has been the common practice of industry using airflow milling powder, production
Efficiency, size distribution, Control for Oxygen Content have a special advantage, but there is also disadvantage, powder violent phase knock against each other in a fluidized bed
Hitting becomes fine powder, and when powder particle size is sufficiently small, powder could be gone out by high-speed rotating separation wheel becomes qualified powder.Grind room material
Number be also to form the necessary condition of pulverized fluidized bed, generally grinding chamber Material control is existed by auto feed control system
In a certain range, but room material is ground when a batch materials are nearly completed and would have to reduce, at this moment the fluidized bed shape of grinding chamber
State is severely deformed, and not only milling efficiency is lower, and also coarse granule is easily made to enter qualified powder by separation wheel, produces to properties of product
Raw baneful influence.Industry Normal practice is when grinding room material less (usually 6kg or less), and the mill remaining a small amount of material in room is direct
Coarse powder state spues, and not only production efficiency is low and dangerous for operation in this way, and the material for also resulting in different batches must not be without mixed
It closes, while coarse powder material part coarse granule in direct spue can be adsorbed on fine powder inner wall of the pipe or joint, just inevitably
It is mixed into qualified powder in next step.
Summary of the invention
In order to solve the above-mentioned technical problem, the utility model provides a kind of no bottom material airflow milling powder device, technology
Scheme are as follows:
Central area is grinding chamber (4) in airflow milling chamber, and airflow milling chamber internal upper part installs separation wheel (2), separation wheel
(2) it is connected with powder channel (3), the outlet of powder channel (3) is arranged outside airflow milling, and airflow milling lower horizontal is equidistant to be set
There are three side nozzle (6), the high pressure gas exported by compressor is connected to the side nozzle of airflow milling by sealing pipeline simultaneously
(6) and bottom nozzle (9), the supersonic airstream of ejection are a crushing fluidisation in grinding chamber (4) and the material collective effect being added
Bed, achieve the purpose that the mutual hard hit of material broken, feeding-passage (1) be arranged on side side nozzle (6) top, and with gas
Stream mill lower chambers communicate, and the airflow milling bottom is equipped with airflow milling bottom nozzle (9), and spirt gas in bottom is equipped at bottom nozzle (9)
(5), airflow milling bottom nozzle (9) sprays power manual modulation valve (7) bottom of with by L pipe and bottom spray pressure gauge (8) is connected, and bottom sprays
Power manual modulation valve (7) and above bottom spray pressure gauge (8) be it is integrated, manually adjust valve size, be attached to pressure above
Power table just shows current outlet pressure value.
Further, material is acutely mutually hit in pulverized fluidized bed becomes fine powder, and passes through high-speed rotating sorting
It takes turns (2) and goes out powder from powder channel (3).
The utility model has the following beneficial effects: the utility model is a kind of no bottom material airflow milling powder device, in grinding chamber
Crushing fluidisation is collectively formed in the material that mill is indoor and is added in the high pressure draught projected by three side nozzles and a bottom nozzle
Bed, effectively head-on collision becomes fine powder to powder in a fluidized bed, when powder particle size is sufficiently small, by high-speed rotating separation wheel from out
Powder channel goes out powder, adds bottom spray pressure gauge and bottom to spray power manual modulation valve, at the nozzle of airflow milling bottom so as to accurately adjust
Grinding chamber bottom orifice gas pressure reduces bottom nozzle exit pressure when grinding room and expecting less and is guaranteeing grinding chamber high pressure gas fluidisation bed just
Normal form, while having found the best right of grinding chamber bottom nozzle exit pressure with grinding chamber weight of material and out powder sorting wheel speed three
Should be related to, control the corresponding relationship between three can prevent grind room powder when abrasive material is less be mixed into coarse granule.This reality
Material Cost can be saved with novel, improve production efficiency, at the same also solve in airflow milling powder generate it is coarse grained heavy
Big security risk.
Detailed description of the invention
Fig. 1 is the sectional view of the utility model structure airflow milling；
Fig. 2 is utility model works schematic diagram；
As shown in Figure 1,1 feeding-passage, 2 separation wheels, 3 powder channels, 4 grinding chambers, 5 bottom spirt gas, 6 side nozzles, 7 bottoms
Power manual pressure regulating valve is sprayed, pressure gauge, 9 bottom nozzles are sprayed in 8 bottoms.
As shown in Fig. 2, a is fed, and b automatic feeder, c cyclone separator, d powder outlet, e filter, f compressor, g benefit
The nitrogen filled.
Specific embodiment
As shown, the utility model is a kind of no bottom material airflow milling powder device, central area is in airflow milling chamber
Grinding chamber 4, airflow milling chamber internal upper part install separation wheel 2, and separation wheel 2 is connected with powder channel 3, and the outlet of powder channel 3 is set
It sets outside airflow milling, airflow milling lower horizontal is equidistant to be set there are three side nozzle 6, and side nozzle 6 leads to airflow milling bottom chamber,
The high pressure gas exported by compressor is connected to the side nozzle 6 and bottom nozzle 9 of airflow milling by sealing pipeline simultaneously, ejection
Supersonic airstream is a pulverized fluidized bed in grinding chamber 4 and the material collective effect being added, and reaches the mutual hard hit of material
To broken purpose, the setting of feeding-passage 1 communicates on 6 top of side side nozzle, and with airflow milling lower chambers, the airflow milling bottom
Portion is equipped with airflow milling bottom nozzle 9, and bottom spirt gas 5 is equipped at airflow milling bottom nozzle 9, and airflow milling bottom nozzle 9 is sprayed by L pipe the bottom of with
Pressure manual modulation valve 7 and bottom spray pressure gauge 8 are connected, and it is one that bottom, which sprays power manual modulation valve 7 and bottom spray pressure gauge 8 above,
Body, valve size is manually adjusted, pressure gauge above is attached to and just shows current outlet pressure value.
Further, the high pressure draught and feeding-passage 1 that described two side nozzles 6 and a bottom spirt gas 5 eject add
Pulverized fluidized bed is collectively formed in grinding chamber 4 in the material entered.
Further, material is acutely mutually hit in pulverized fluidized bed becomes fine powder, and passes through high-speed rotating sorting
Wheel 2 goes out powder from powder channel.In order to have found grinding chamber bottom nozzle exit pressure and grinding chamber weight of material and out powder sorting wheel speed
The best correspondence of three should be gradually the pressure reduction of bottom nozzle when the indoor material of grinding is added lower than 10 kilograms
To the 90%-70% of only normal pressure, while the revolving speed for stepping up separation wheel is the 103%-110% of rated speed, is controlled
Corresponding relationship between three can prevent mill room powder when abrasive material is less and be mixed into coarse granule.
As shown in Fig. 2, the high pressure gas exported by compressor f, side nozzle and the bottom of grinding chamber 4 are connected by sealing pipeline
After nozzle, form supersonic airstream, be ejected into the center abrasive areas of grinding chamber 4, material from charging a to automatic feeder b to
The feeding-passage of grinding chamber 4, supersonic airstream drive the material for quantitatively entering grinding chamber by feed inlet and automatic feeder high
Speed flight, is mutually collided in milling zone, to achieve the purpose that crushing.After flow expansion drive collision after material rise into
Enter graded region, sub-elect the powder for reaching granularity by separation wheel in graded region, the granule size of powder is fast by sorting wheel speed
Slow to adjust, the powder isolated is taken out of with air-flow, realizes and separates into cyclone separator c, remaining coarse powder return milling zone after
Continuous grinding, until being separated out after reaching granularity.Qualified powder is discharged from powder outlet d, cannot be separated using centrifugal process
Superfine powder out enters superfine powder filter e with air-flow and is filtered off, and the pure nitrogen flowed out from superfine powder filter e returns
Compressor f is recycled with the nitrogen g newly supplemented, and whole process is controlled by computer, carries out automatically continuously work.
The utility model is a kind of no bottom material airflow milling powder device, passes through three side spray air inlets and a bottom in grinding chamber
Pulverized fluidized bed is collectively formed in the material that mill is indoor and is added in the high pressure draught that spirt gas projects, and powder is effective in a fluidized bed
Head-on collision becomes fine powder and goes out powder from powder channel by high-speed rotating separation wheel, at airflow milling bottom when powder particle size is sufficiently small
Bottom spray pressure gauge and bottom is added to spray power manual modulation valve at nozzle, so as to accurately adjust grinding chamber bottom orifice gas pressure,
Bottom nozzle exit pressure is reduced when grinding room and expecting less and guarantees the normal morphology of grinding chamber high pressure gas fluidisation bed, while having found grinding
Room bottom nozzle exit pressure and grinding chamber weight of material and the out best correspondence of powder sorting wheel speed three, are controlled between three
Corresponding relationship can prevent grind room powder when abrasive material is less be mixed into coarse granule.It is dropped when grinding room material less than some set amount
Low bottom nozzle exit pressure improves out powder sorting wheel speed simultaneously, controls the corresponding relationship between three and just normally produces qualified powder
Material thoroughly avoids mill room powder when abrasive material is less from being mixed into coarse grained problem.The utility model can save Material Cost, mention
High production efficiency, while also solving in airflow milling powder and generating coarse grained major safety risks.
The above is to preferred embodiments of the present invention, it should be noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvement and increase can also be made, these improve and
Increase the protection being also considered as to the utility model.
Claims (2)
1. a kind of no bottom material airflow milling powder device, which is characterized in that central area is grinding chamber (4), gas in airflow milling chamber
It flows top installation separation wheel (2), separation wheel (2) in mill chamber room to be connected with powder channel (3), the outlet setting of powder channel (3)
Outside airflow milling, airflow milling lower horizontal is equidistant to be set there are three side nozzle (6), the high pressure gas exported by compressor, warp
It crosses sealing pipeline while being connected to the side nozzle (6) and bottom nozzle (9) of airflow milling, the supersonic airstream of ejection is in grinding chamber (4)
Material collective effect with addition is a pulverized fluidized bed, achievees the purpose that the mutual hard hit of material broken, and charging is logical
Road (1) is arranged on side side nozzle (6) top, and communicates with airflow milling lower chambers, and the airflow milling bottom is equipped with airflow milling bottom
Nozzle (9), is equipped with bottom spirt gas (5) at bottom nozzle (9), and airflow milling bottom nozzle (9) sprays power the bottom of with by L pipe and manually adjusts
Valve (7) and bottom spray pressure gauge (8) are connected, and it is integrated that bottom, which sprays power manual modulation valve (7) and bottom spray pressure gauge (8) above,
, valve size is manually adjusted, pressure gauge above is attached to and just shows current outlet pressure value.
2. a kind of no bottom material airflow milling powder device as described in claim 1, which is characterized in that material is in pulverized fluidized bed
Acutely mutually hitting becomes fine powder, and goes out powder from powder channel (3) by high-speed rotating separation wheel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820782575.7U CN208526909U (en) | 2018-05-24 | 2018-05-24 | A kind of no bottom material airflow milling powder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820782575.7U CN208526909U (en) | 2018-05-24 | 2018-05-24 | A kind of no bottom material airflow milling powder device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208526909U true CN208526909U (en) | 2019-02-22 |
Family
ID=65394191
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| CN201820782575.7U Active CN208526909U (en) | 2018-05-24 | 2018-05-24 | A kind of no bottom material airflow milling powder device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877329A (en) * | 2019-04-16 | 2019-06-14 | 北京科技大学 | Preparation of titanium and titanium alloy powder for 3D printing based on fluidized bed jet milling technology |
| CN111905661A (en) * | 2020-07-31 | 2020-11-10 | 中国船舶重工集团公司第七一八研究所 | An aerosol generation system suitable for high temperature, high pressure and high humidity environment |
| CN111921463A (en) * | 2020-07-31 | 2020-11-13 | 中国船舶重工集团公司第七一八研究所 | An aerosol generating device suitable for high temperature, high pressure and high humidity environment |
| CN113967522A (en) * | 2021-10-29 | 2022-01-25 | 新疆晶硕新材料有限公司 | Silica flour processingequipment |
| CN114273043A (en) * | 2020-10-01 | 2022-04-05 | 霍索卡瓦阿尔彼股份公司 | Fluidized bed opposed-jet mill and method for operating fluidized bed opposed-jet mill |
| CN114345508A (en) * | 2022-03-18 | 2022-04-15 | 山西金山磁材有限公司 | Jet mill separation device and method capable of improving powder particle size distribution |
| CN116459926A (en) * | 2023-03-31 | 2023-07-21 | 天津巴莫科技有限责任公司 | Gas-solid ratio control method and system and fluidized bed jet mill |
-
2018
- 2018-05-24 CN CN201820782575.7U patent/CN208526909U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877329A (en) * | 2019-04-16 | 2019-06-14 | 北京科技大学 | Preparation of titanium and titanium alloy powder for 3D printing based on fluidized bed jet milling technology |
| US11911826B2 (en) | 2019-04-16 | 2024-02-27 | University Of Science And Technology Beijing | Preparation of titanium and titanium alloy powder for 3D printing based on fluidized bed jet milling technique |
| CN111905661A (en) * | 2020-07-31 | 2020-11-10 | 中国船舶重工集团公司第七一八研究所 | An aerosol generation system suitable for high temperature, high pressure and high humidity environment |
| CN111921463A (en) * | 2020-07-31 | 2020-11-13 | 中国船舶重工集团公司第七一八研究所 | An aerosol generating device suitable for high temperature, high pressure and high humidity environment |
| CN114273043A (en) * | 2020-10-01 | 2022-04-05 | 霍索卡瓦阿尔彼股份公司 | Fluidized bed opposed-jet mill and method for operating fluidized bed opposed-jet mill |
| US11833523B2 (en) | 2020-10-01 | 2023-12-05 | Hosokawa Alpine Aktiengesellschaft | Fluidized bed opposed jet mill for producing ultrafine particles from feed material of a low bulk density and a process for use thereof |
| CN113967522A (en) * | 2021-10-29 | 2022-01-25 | 新疆晶硕新材料有限公司 | Silica flour processingequipment |
| CN113967522B (en) * | 2021-10-29 | 2022-10-25 | 新疆晶硕新材料有限公司 | Silica flour processingequipment |
| CN114345508A (en) * | 2022-03-18 | 2022-04-15 | 山西金山磁材有限公司 | Jet mill separation device and method capable of improving powder particle size distribution |
| CN114345508B (en) * | 2022-03-18 | 2022-06-07 | 山西金山磁材有限公司 | Jet mill separation device and method capable of improving powder particle size distribution |
| CN116459926A (en) * | 2023-03-31 | 2023-07-21 | 天津巴莫科技有限责任公司 | Gas-solid ratio control method and system and fluidized bed jet mill |
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Address after: 271600 No. three industrial road, hi tech Development Zone, Tai'an, Shandong, Feicheng 311 Patentee after: Sinochem (Shandong) magnetic materials Co., Ltd Address before: 271600 Shandong city of Tai'an province Feicheng city high tech Development Zone Industrial three northbound West Aoshi group Patentee before: CHINALCO SHANDONG INOVE STRONG MAGNET MARTERIAL Co.,Ltd. |