CN108405142A - Double gas supply airflow millings - Google Patents
Double gas supply airflow millings Download PDFInfo
- Publication number
- CN108405142A CN108405142A CN201810325542.4A CN201810325542A CN108405142A CN 108405142 A CN108405142 A CN 108405142A CN 201810325542 A CN201810325542 A CN 201810325542A CN 108405142 A CN108405142 A CN 108405142A
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- air
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Links
- 238000003801 milling Methods 0.000 title claims abstract description 29
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 abstract description 46
- 239000002245 particle Substances 0.000 abstract description 15
- 239000000696 magnetic material Substances 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 description 37
- 239000007789 gas Substances 0.000 description 34
- 238000000227 grinding Methods 0.000 description 19
- 239000006247 magnetic powder Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/30—Passing gas through crushing or disintegrating zone the applied gas acting to effect material separation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/32—Passing gas through crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/34—Passing gas through crushing or disintegrating zone gas being recirculated to crushing or disintegrating zone
-
- 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
-
- 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
- B22F2009/044—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by jet milling
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
Double gas supply airflow millings, the equipment is used for magnetic material powder, it includes the host for being sequentially arranged connection, separator, filter, compressor, the gas outlet of filter is coupled by return-air duct with the air inlet of compressor, the gas outlet of compressor is coupled by high-pressure air feed pipeline with the air inlet of nozzle in host, it is characterised in that：Further include wind turbine, host is equipped at least one low-pressure admission mouth, and the low-pressure admission mouth of host is coupled by low pressure steam line with the exhaust outlet of wind turbine, and the air inlet of wind turbine couples with return-air duct；Coupling between low pressure steam line and return-air duct has bypass duct, and bypass duct is equipped with regulating valve；The powder particles distribution that this equipment milling quality is high, makes is concentrated.
Description
Technical field
The present invention relates to magnetic material powder manufacturing apparatuses, specifically provide a kind of double gas supply airflow millings.
Background technology
It needs to use airflow milling powder in the production process of magnetic material, raw material is ground into 3~5 microns of metal alloy powder
End, for point of theory, powder size is more concentrated, and the repressed material final performance being sintered out is higher.Airflow milling is in powder processed
It to complete to crush in the process and two tasks of sorting could obtain qualified powder.Magnetic materials production mostly uses greatly general at present
To spraying formula airflow milling powder.The host of airflow milling is made of grinding chamber and separation chamber, grinding chamber under, separation chamber is upper.Grinding
The effect of room is that material is ground, and grinding chamber is equipped with multiple nozzles, and compressed gas is sprayed by nozzle at high speeds, and powder is driven by air-flow to be added
Speed movement, mutually collides in the near intersections of multiple nozzles and is ground, the powder broken up is sprayed gas fluidized with gas by nozzle
The separation chamber's movement of flow direction above；The effect of separation chamber is that particle of different sizes is sorted, and is similar to sieve, can be
The feed powder of larger particles is kept off in separation chamber, and the particle that this part is blocked falls back to the grinding of lower part under gravity
Room is accelerated to collide again until levigate again by nozzle.Smaller particle feed powder passes through the separation wheel of separation chamber under airflow function
Separator is flowed to from discharge port, the centrifugation through separator separation is discharged from separator discharge port, becomes the finished product material of milled.
The gas flow filter of remaining small part superfine powder is carried, gas filtration totally returns to compressor air suction by return-air duct
Mouthful, it is recycled by being sent into host by high-pressure air feed pipeline again after compressor pressurization, cooling driers cooling, forms high pressure gas and follow
Loop wire road.
The high pressure draught that host in airflow milling is sprayed by nozzle grinds powder, these high pressure gas are being ground after spraying
Indoor expansion, which continues to flow to separation chamber, drives powder to flow into separation chamber and sorted；Since this airflow milling is ground into powder
Sorting is the air-flow of same flow, and grinding speed and separation velocity are unable to adjust, and the powder that part is ground can be prevented from timely
It sorts away and is ground repeatedly meticulous, limited by the structure of existing airflow milling, granularity of magnet powder distribution obtained is caused not enough to be concentrated,
Milling quality is relatively low, and it is low to repeat milling efficiency.
Also in airflow milling powder technique, milling and sorting are completed using distinct device, increase production cost, operated
It is cumbersome, while it is difficult to control the oxygen content in magnetic powder in magnetic powder turnover.
Invention content
The object of the present invention is to provide a kind of double gas supply airflow millings, the powder particles which makes are distributed concentration, mill
Silty amount is high.
The technical scheme is that：Double gas supply airflow millings, including be sequentially arranged the host (2) of connection, separator (4),
The gas outlet of filter (6), compressor (12), filter is coupled by return-air duct (7) with the air inlet of compressor, compressor
Gas outlet coupled with the air inlet (19) of nozzle in host by high-pressure air feed pipeline (18), it is characterised in that：Further include wind
Machine (13), host are equipped at least one low-pressure admission mouth (20), and the low-pressure admission mouth of host passes through low pressure steam line (16)
Couple with the exhaust outlet of wind turbine, the air inlet of wind turbine couples with return-air duct.
Coupling between low pressure steam line and return-air duct has bypass duct (17), and bypass duct is equipped with regulating valve
(15)。
Its operation principle is：Gas in return-air duct is sent into host by low pressure steam line and assists magnetic powder point by wind turbine
Choosing forms low-pressure gas recycle circuit, passed through the low-pressure admission of host after the water cooled device cooling of low-pressure gas sent by wind turbine drum
Mouthful enter host, which, which is superimposed the powder that grinds of drive with the high pressure gas that nozzle sprays and flows to separation wheel, is divided
Choosing.Because the high-pressure gas flow that nozzle sprays is constant, the powder quantity that airflow milling host is ground in the unit interval is constant.
The low-pressure gas blown by low-pressure admission mouth does not have milling action to powder, it is superimposed with the gas that nozzle sprays makes sorting gas
Flow increase, the powder that the unit interval sub-elects also increases as.Advantage is：It realizes under the premise of grinding rate is constant
Separation velocity is improved, makes levigate particle there are more chances to sort away and was ground again without being blocked in grinding chamber
Carefully, improve size distribution, the powder particles distribution ground is concentrated, milling quality is high, since the powder ground is sorted quickly
It goes, will not repeat to be milled, so milling is efficient.The bypass duct with regulating valve can change sorting air-flow total amount, can
Average particle size is sorted to adjust, the flow proportional that can also change low-pressure gas and high pressure gas meets different grain size distribution and wants
It asks.The increased low-pressure gas recycle circuit of the present invention ensure that the completeness of sorting, improves size distribution concentration degree, grinds simultaneously
Mill is completed in the same device with thorough sorting, easy to operate, does not have to turnover, easily controllable oxygen content.
Description of the drawings
Fig. 1 is the structural schematic diagram of double gas supply airflow millings of the invention.
Fig. 2 is the structural schematic diagram of host in double gas supply airflow millings of the invention.
1 magnetic material, 2 hosts, 3 primary mixture delivery pipes, 4 separators, 5 air shooters containing superfine powder, 6 mistakes in figure
Filter, 7 return-air ducts, 8 thin magnetic powder outlets, 9 thin magnetic powder collecting tanks, 10 superfine powder outlets, 11 superfine powder collecting tanks, 12 pressures
Contracting machine, 13 wind turbines, 14 cooling driers, 15 regulating valves, 16 low pressure steam lines, 17 bypass ducts, 18 high-pressure air feed pipelines, 19 nozzles
Air inlet, 20 low-pressure admission mouths, 21 feed inlets, 22 hoppers, 23 motors, 24 separation wheels, 25 discharge ports, 26 separation chamber, 27 grind
Grind room, 28 grinding locular walls.
Specific implementation mode
Double gas supply airflow millings, including it is sequentially arranged host 2, separator 4, filter 6, the compressor 12 of connection, filter
Gas outlet coupled with the air inlet of compressor by return-air duct 7, the gas outlet of compressor by high-pressure air feed pipeline 18 with
The air inlet 19 of nozzle couples in host, it is characterised in that：Further include wind turbine 13, host is equipped at least one low-pressure admission mouth
20, the low-pressure admission mouth of host is coupled by low pressure steam line 16 with the exhaust outlet of wind turbine, the air inlet and muffler of wind turbine
Road couples.Coupling between low pressure steam line and return-air duct has bypass duct 17, and bypass duct is equipped with regulating valve 15.
The host is equipped with feed inlet 21, and magnetic material 1 is added inside host by the feed inlet for hopper 22, main
By the import unicom of primary mixture delivery pipe 3 and separator, the lower part of separator is equipped with thin magnetic powder outlet for the outlet of machine
8, thin magnetic powder outlet is opposite with the tank mouth of thin magnetic powder collecting tank 9, and the gas outlet of separator is by containing superfine powder air shooter 5
It is discharged equipped with superfine powder with the lower part of the import unicom of filter, gas outlet and the return-air duct unicom of filter, filter
Mouth 10, superfine powder outlet is opposite with the tank mouth of superfine powder collecting tank 11,
The host is made of grinding chamber 27 and separation chamber 26 from bottom to up, and the feed inlet is located at grinding locular wall 28
On, the air inlet of the nozzle is located on grinding locular wall, and the air inlet of each nozzle is equipped with nozzle, the injection direction phase of each nozzle
It hands over, separation chamber is equipped with discharge port 25, separation wheel 24, and the outlet of separation wheel is opposite with discharge port, and motor 23, electricity are housed in separation chamber
Machine and separation wheel be connected by power, grind locular wall and/or sorting locular wall is equipped with several low-pressure admission mouths, and grinding chamber bottom is cone
Shape.
It is respectively provided with cooling driers 14 on the high-pressure air feed pipe and low pressure air supply pipe.
Double gas supply airflow millings of the present invention, accelerate separation velocity under the premise of not increasing grinding rate, make levigate material
As early as possible by separation wheel leave host avoid it is overground.The original constant appropriate increasing efficiency of separation of grinding rate is kept, conjunction is made
Lattice powder by separation chamber fly out grinding machine chance increase, reduce little particle be ground phenomenon repeatedly, to make powder obtained
Grain graininess is concentrated, and high-quality magnetic powder is obtained.
Powder particles are simultaneously by the power of two adverse effects in separation chamber：1, the effect of airflow function, i.e. wind-force size,
This power makes powder fly away from separation chamber, and 2, the effect of centrifugal force that is rotated with separation wheel of powder, this power makes powder particles stay in
Grinding chamber is returned in separation chamber in turn to be grated again.Smaller particle is due to the larger wind-engaging force effect of the surface area of Unit Weight
Big to be easy to go out by separation wheel, the powder of bulky grain throws away separation wheel by centrifugal force since surface area ratio is small and stays in abrasive material
It is interior, so adjustment sorting air quantity and sorting wheel speed can change the average particle size of the powder sorted out.
The particle for having reached granularity requirements can not be very the separation chamber that flies out, improve the efficiency of separation be improve granularity
It is distributed the key of collection, increases fine grained under the premise of grinding speed is constant and flies out the chance of separation chamber, reduce fine powder and returned mill just
The magnetic powder of size distribution concentration can be obtained.
The present invention increases low-pressure admission mouth on the host of airflow milling, improves sorting capability, the air inflow of low-pressure gas can
Fly out separation chamber chance of levigate powder can be made to increase to adjust, increase the efficiency of separation, and the air-flow of high pressure gas is constant, grinding
Speed remains unchanged, and such fine powder flies away from out separation chamber's chance and doubles, and is reduced by levigate chance repeatedly, obtains dynamics distribution and more collects
In powder.
Claims (2)
1. pair gas supply airflow milling, including it is sequentially arranged host (2), separator (4), filter (6), the compressor (12) of connection,
The gas outlet of filter is coupled by return-air duct (7) with the air inlet of compressor, and the gas outlet of compressor passes through high-pressure air feed
Pipeline (18) couples with the air inlet (19) of nozzle in host, it is characterised in that：Further include wind turbine (13), host is equipped at least
The low-pressure admission mouth of one low-pressure admission mouth (20), host is coupled by low pressure steam line (16) with the exhaust outlet of wind turbine, wind
The air inlet of machine couples with return-air duct.
2. double gas supply airflow millings according to claim 1, it is characterised in that：Join between low pressure steam line and return-air duct
It is connected to bypass duct (17), bypass duct is equipped with regulating valve (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810325542.4A CN108405142A (en) | 2018-04-12 | 2018-04-12 | Double gas supply airflow millings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810325542.4A CN108405142A (en) | 2018-04-12 | 2018-04-12 | Double gas supply airflow millings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108405142A true CN108405142A (en) | 2018-08-17 |
Family
ID=63135161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810325542.4A Pending CN108405142A (en) | 2018-04-12 | 2018-04-12 | Double gas supply airflow millings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108405142A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115921059A (en) * | 2022-12-27 | 2023-04-07 | 湖南泰通能源管理股份有限公司 | Intelligent compressed air system for anode material and automatic control system of jet mill |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005095838A (en) * | 2003-09-26 | 2005-04-14 | Kurimoto Ltd | Dry grinding apparatus |
| CN201988430U (en) * | 2011-01-12 | 2011-09-28 | 成都坤森微纳科技有限公司 | Fluidized bed jet mill grader |
| CN205361575U (en) * | 2015-12-31 | 2016-07-06 | 连云港东渡碳化硅有限公司 | A supersonic airflow grinding system that is used for fineization carborundum material |
| CN207086068U (en) * | 2017-05-15 | 2018-03-13 | 四川中科贝特纳米科技有限公司 | A kind of high-accuracy fine powder air-flow pulverizing grading machine of multistage |
| CN208340882U (en) * | 2018-04-12 | 2019-01-08 | 吉林市凯尔维特机电设备有限责任公司 | Double gas supply airflow millings |
-
2018
- 2018-04-12 CN CN201810325542.4A patent/CN108405142A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005095838A (en) * | 2003-09-26 | 2005-04-14 | Kurimoto Ltd | Dry grinding apparatus |
| CN201988430U (en) * | 2011-01-12 | 2011-09-28 | 成都坤森微纳科技有限公司 | Fluidized bed jet mill grader |
| CN205361575U (en) * | 2015-12-31 | 2016-07-06 | 连云港东渡碳化硅有限公司 | A supersonic airflow grinding system that is used for fineization carborundum material |
| CN207086068U (en) * | 2017-05-15 | 2018-03-13 | 四川中科贝特纳米科技有限公司 | A kind of high-accuracy fine powder air-flow pulverizing grading machine of multistage |
| CN208340882U (en) * | 2018-04-12 | 2019-01-08 | 吉林市凯尔维特机电设备有限责任公司 | Double gas supply airflow millings |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115921059A (en) * | 2022-12-27 | 2023-04-07 | 湖南泰通能源管理股份有限公司 | Intelligent compressed air system for anode material and automatic control system of jet mill |
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