CN205599522U - Submicron metallic powder does not have oxygen partial pressure level equipment - Google Patents
Submicron metallic powder does not have oxygen partial pressure level equipment Download PDFInfo
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- CN205599522U CN205599522U CN201620308276.0U CN201620308276U CN205599522U CN 205599522 U CN205599522 U CN 205599522U CN 201620308276 U CN201620308276 U CN 201620308276U CN 205599522 U CN205599522 U CN 205599522U
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- separation chamber
- air
- anaerobic
- powder body
- filter
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- 239000000843 powder Substances 0.000 title claims abstract description 71
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract description 11
- 239000001301 oxygen Substances 0.000 title abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 title abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 54
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 22
- 239000006185 dispersion Substances 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims description 26
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 8
- 230000008676 import Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 239000012071 phase Substances 0.000 description 7
- 239000008187 granular material Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model provides a submicron metallic powder does not have oxygen partial pressure level equipment, includes feeder, anaerobism case, feeder hopper, dispersion awl, separation chamber, the porous ring that admits air, positioning disk, exhaust pipe, middlings room, material collecting barrel, blowback jar, collection tank, draught fan, heat exchanger, filter, induced air cover, nitrogen valve. The anaerobism incasement is arranged in to the feeder, and the feeder hopper is connected with the anaerobism case, and the feeder hopper is connected with the separation chamber, and dispersion awl is connected with the separation chamber, and the porous ring that admits air is connected with the separation chamber, and material collecting barrel is connected with the middlings room, and the positioning disk is connected with the exhaust pipe, and the blowback jar is connected with the draught fan, and the draught fan is connected with the heat exchanger, and the heat exchanger is connected with the filter, and the filter covers with induced air to be connected, and the nitrogen valve covers with induced air to be connected. Has the advantage that to avoid traditional cyclone to have the vortex and short circuit phenomenon between cyclone body import department and against current pipe.
Description
Technical field:
This utility model belongs to sub-micron-sized metal powder body anaerobic classifying equipoment technical field, is that one relates to activity relatively
Height, the most oxidizable submicron-grade superfine particle classifying equipment, belong to submicron-grade superfine particle classifying field.
Background technology:
In traditional particle classifying equipment, conventional stage division has liquid phase classification and gas phase classification, in liquid phase classification
Conventional medium has ethanol and two kinds of water.
In liquid phase alcohol fraction, feed liquid under the effect of high-pressure pump, feed liquid and impeller and the high-speed friction of tube wall, make ethanol
Temperature drastically raises, and accelerates evaporation rate, and in production environment, air alcohol concentration increases, and ethanol belongs to inflammable thing, potential safety hazard
Increase.Alcohol consumption accelerates simultaneously, and usage amount increases, and adds production cost.
Liquid phase water classification process, metal-powder and water oxygen generation electrochemical reaction, powder surface aoxidizes, corrodes now
As, make the specific surface area of powder body increase, oxygen composition increases, and has a strong impact on characteristic and the quality of powder body.
Gas phase classification process, traditional classifying equipoment has cyclone separator, and the medium used in system is air, but
Containing a certain amount of moisture content and oxygen in air, after air and powder body are fully contacted so that classification material nikel powder, copper powder, glass putty,
There is oxide etch reaction in the superfine powder surfaces such as aluminium powder, makes the specific surface area of powder body increase, and oxygen content increases, and has a strong impact on powder
The characteristic of body and quality.
Additionally, gas phase classification process, air-flow is in the side of cyclone separator tangentially to enter cyclone body, and powder body is at air-flow
After effect lower entrance cyclone body, survey because forming the outside circulation moved downward under the effect of gravity and centrifugal force outside cyclone body, gas
In stream, bulky grain powder body moves downwardly into aggregate bin along whirlwind body wall.The interior circulation moved upward it is centrally formed at cyclone body,
In air-flow, tiny powder body moves upward at cyclone body center.Interior circulation is at uphill process China and foreign countries' sidewind and the outer shroud moved downward
Stream is reverse and go, there is eddy current and short circuit phenomenon at cyclone inlet air-flow with the outlet of overhead stream bank of tubes, partly without
Scattered powder particle enters overhead stream exhaustor in the lump with short circuit air flow, enters in fines collection equipment, has a strong impact on classification effect
Rate.
Separately, conventional cyclone separator feeding manner is side charging, and the air inlet of only one of which direction, and powder body is at air-flow
Effect is lower enter cyclone body after, the resistance that air-flow is subject to is big, and powder body rotary speed in rotary fluid is slow, powder particle be subject to from
Mental and physical efforts reduce, and powder dispersity is poor, and the undispersed particle of part enters in fines collection equipment with rising internal ring stream, is directed at classification
Efficiency reduces, and effectiveness of classification is poor.
Further, in gas phase classification, gas is discharged by induced draught system, the most recycled, and system exhaust air rate is big, humidity control
System difficulty, air contains a certain amount of moisture content.After classification powder body and air contact, adsorb a certain amount of water by capillarity
Part so that powder body viscosity strengthens, and occurs that agglomeration, powder body form relatively large crumb, affects powder dispersity, affects classification effect
Really.
Utility model content
This utility model is for the above-mentioned deficiency of prior art, it is provided that one is avoided that conventional cyclone is at cyclone body
The sub-micron-sized metal powder body anaerobic classifying equipoment of eddy current and short circuit phenomenon is there is between import department and overhead stream pipe.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is: a kind of sub-micron-sized metal powder body anaerobic
Classifying equipoment, this equipment includes charger, anaerobic box, feed hopper, dispersion cone, separation chamber, many gas inlet holes ring, exhaust duct, coarse powder
Room, rewinding bucket, blowback tank, collecting tank, air-introduced machine, heat exchanger, filter, blower cover；
Described charger is placed in anaerobic box, and the feed end of feed hopper is placed in anaerobic box, the discharge end of feed hopper with
Separation chamber connects；Dispersion cone is placed in below the discharge end of feed hopper；The lower end of described separation chamber connects coarse powder room, coarse powder room
Lower end connect rewinding bucket；The air intake of the exhaust duct connected with blowback tank, blowback pot sidewall and air-introduced machine it is provided with in separation chamber
Pipe connects, and the discharge pipe of air-introduced machine is connected with heat exchanger one end, and the heat exchanger other end is connected with one end of filter, filter
The other end is connected with blower cover；Described blower cover sealing shroud is arranged together in the junction of separation chamber Yu coarse powder room, blower cover
There is the many gas inlet holes ring being connected with separation chamber；Described separation chamber is inverted cone, and the discharge end of feed hopper is positioned at dispersion cone
On the axis of separation chamber.
Using said structure, use tapered separation chamber, dispersion cone to be placed in center, top, separation chamber, powder body is from charger out
Enter separation chamber by its top feed bucket afterwards, then by dispersion cone dispersion, under the effect of air-flow, do move downward centrifugal
Motion, oversize grain accelerates in separation chamber to separate, and is split into positioning disk edge, is upwards obtained again air-flow and takes top dispersion cone to
Downward centrifugal motion is done at place again, the most repeatedly separates, and part oversize grain enters coarse powder catcher under positioning disk effect
In, fine particle is entered in blowback tank by exhaust duct with central gas stream, it is to avoid air flow shortcircuit phenomenon, solves tradition whirlwind
Eddy current and short circuit phenomenon is there is in separator between cyclone body import department and overhead stream pipe；Additionally, the present invention is arranged in blower cover
Having many gas inlet holes ring, it is ensured that air-flow passes through the multi-direction separation chamber that uniformly enters of many gas inlet holes ring, air-flow divides in rotation separation chamber
Cloth is uniform, reduces the resistance that air-flow is subject to, increases flow rotation speed, improves the dispersibility of powder body, improve classification
Efficiency.
As preferably, between described filter and blower cover, it is provided with the nitrogen valve being connected with source nitrogen；Due to this
Bright for efficient anaerobic classifying equipoment, nitrogen is by nitrogen valve access arrangement system, and air-introduced machine expellant gas is by cooling, mistake
It is back to after filter in hierarchy system, the nitrogen body after all backflows of air inlet of separation chamber；It is tightly connected in charging aperture and anaerobic box,
Nitrogen in all anaerobic box of charging aperture air inlet, nitrogen circulation uses.Thus realize classification process and use gas, moisture content is few, oxygen
Content is low, it is to avoid conventional gas-phase classification process is because of moisture content and the oxygen Oxidation to classification material in air.
As preferably, described exhaustor is positioned at one end of separation chamber and is circumferentially provided with positioning disk, described positioning disk
For inverted cone；Use this structure, coarse granule powder body can be guided to move to the periphery of separation chamber, little granule fines body then along
Exhaust duct enters in blowback tank, improves separating effect.
As preferably, multiple circumference is set between described many gas inlet holes ring and separation chamber and is uniformly distributed and and separation chamber
Periphery wall is the air inlet of tangential direction air inlet；Use this structure to can ensure that uniform air inlet, reduce the resistance that air-flow is subject to,
Increase flow rotation speed, improve the dispersibility of powder body, improve classification efficiency.
As further preferably, the cross section of described air inlet is rectangle, aperture width 1mm～20mm of rectangular opening, hole
Footpath high 5～30mm；This structure can ensure that inlet amount is uniform, does not haves charging aperture uneven the showing of short transverse inlet amount
As.
As further preferably, described air inlet is 8～60 holes；Charging is from separation chamber to use this structure can ensure that
Each face be uniformly distributed charging, prevent the appearance of short circuit phenomenon.
The equipment of the present invention is particularly well-suited to the precision of particle diameter submicron-grade superfine powder body below 3.0um micron and divides
Level；This equipment is applicable to the classification that shape is ball-type powder body；It is higher that this equipment is applicable to activity, the most oxidizable sub-micro
Meter level metal-powder and non-metallic powder classification.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the sectional view structural representation of separation chamber of the present utility model and junction, coarse powder room.
Fig. 3 is the exhaust pipe structure schematic diagram that this utility model arranges positioning disk.
Detailed description of the invention:
With instantiation, the present invention is described in further details below in conjunction with the accompanying drawings.
As shown in Figure 1-2, sub-micron-sized metal powder body anaerobic classifying equipoment of the present utility model, this equipment includes charger
1, anaerobic box 2, feed hopper 3, dispersion cone 4, separation chamber 5, many gas inlet holes ring 6, exhaust duct 8, coarse powder room 9, rewinding bucket 10, blowback tank
11, collecting tank 11.1, air-introduced machine 12, heat exchanger 13, filter 14, blower cover 15；
Described charger 1 is placed in anaerobic box 2, and the feed end of feed hopper 3 is placed in anaerobic box 2, the discharging of feed hopper 3
End is connected with separation chamber 5；Dispersion cone 4 is placed in below the discharge end of feed hopper；The lower end of described separation chamber 5 connects coarse powder room
9, the lower end of coarse powder room 9 connects rewinding bucket 10；The exhaust duct 8 connected with blowback tank 11, blowback tank 11 times it is provided with in separation chamber
End connects collecting tank 11.1, and the sidewall of blowback tank is connected with the blast pipe of air-introduced machine 12；The discharge pipe of air-introduced machine 12 and heat exchanger
13 one end connect, and heat exchanger 13 other end is connected with one end of filter 14, and the other end of filter 14 is connected with blower cover 15；
Described blower cover 15 sealing shroud together in the junction of separation chamber Yu coarse powder room, is provided with in blower cover 15 and is connected with separation chamber
Many gas inlet holes ring 6；Described separation chamber 5 is in inverted cone, and the discharge end of feed hopper 3 is respectively positioned on the axis of separation chamber with dispersion cone
On line.
Using said structure, use tapered separation chamber, dispersion cone to be placed in center, top, separation chamber, powder body is from charger out
Enter separation chamber by its top feed bucket afterwards, then by dispersion cone dispersion, under the effect of air-flow, do move downward centrifugal
Motion, oversize grain accelerates in separation chamber to separate, and is split into positioning disk edge, is upwards obtained again air-flow and takes top dispersion cone to
Downward centrifugal motion is done at place again, the most repeatedly separates, and part oversize grain enters coarse powder catcher under positioning disk effect
In, fine particle is entered in blowback tank by exhaust duct with central gas stream, it is to avoid air flow shortcircuit phenomenon, solves tradition whirlwind
Eddy current and short circuit phenomenon is there is in separator between cyclone body import department and overhead stream pipe；Additionally, the present invention is arranged in blower cover
Having many gas inlet holes ring, it is ensured that air-flow passes through the multi-direction separation chamber that uniformly enters of many gas inlet holes ring, air-flow divides in rotation separation chamber
Cloth is uniform, reduces the resistance that air-flow is subject to, increases flow rotation speed, improves the dispersibility of powder body, improve classification
Efficiency.
Filter 14 described in this practicality and be provided with the nitrogen valve 16 being connected with source nitrogen between blower cover 15；Due to this
Invention for efficient anaerobic classifying equipoment, nitrogen by nitrogen valve access arrangement system, air-introduced machine expellant gas by cooling,
It is back to after filtration in hierarchy system, the nitrogen after all backflows of air inlet of separation chamber；Charging aperture and the company of sealing in anaerobic box
Connecing, nitrogen in all anaerobic box of charging aperture air inlet, nitrogen circulation uses.Thus realize classification process and use gas, moisture content is few,
Oxygen content is low, it is to avoid conventional gas-phase classification process is because of moisture content and the oxygen Oxidation to classification material in air.
As it is shown on figure 3, one end that the exhaustor 8 described in this practicality is positioned at separation chamber 5 is circumferentially provided with positioning disk 7, institute
The positioning disk 7 stated is inverted cone；Use this structure, coarse granule powder body can be guided to move to the periphery of separation chamber, and little granule
Fine powder body then enters in blowback tank along exhaust duct, improves separating effect.
As in figure 2 it is shown, arrange between many gas inlet holes ring 6 and separation chamber 5 described in this practicality multiple circumference be uniformly distributed and
It is the air inlet 6.1 of tangential direction air inlet with separation chamber's periphery wall；Use this structure to can ensure that uniform air inlet, reduce air-flow
The resistance being subject to, increases flow rotation speed, improves the dispersibility of powder body, improves classification efficiency.As the most excellent
Choosing, the cross section of described air inlet is rectangle, aperture width 1mm～20mm of rectangular opening, aperture high 5～30mm；This structure can
To ensure that inlet amount is uniform, do not have the phenomenon that charging aperture short transverse inlet amount is uneven.
Air inlet described in this practicality is 8～60 holes, and this embodiment is as in figure 2 it is shown, be 8；Use this structure permissible
Ensure that charging is uniformly distributed charging from each face of separation chamber, prevent the appearance of short circuit phenomenon.
The equipment of the present invention is particularly well-suited to the precision of particle diameter submicron-grade superfine powder body below 3.0um micron and divides
Level；This equipment is applicable to the classification that shape is ball-type powder body；It is higher that this equipment is applicable to activity, the most oxidizable sub-micro
Meter level metal-powder and non-metallic powder classification.
The charger of the present invention is placed in anaerobic box, is tightly connected in feed hopper feeding mouth and anaerobic box, and nitrogen passes through nitrogen
In air valve entrance system；Nitrogen in all anaerobic box of feed hopper feeding mouth air inlet, has been completely cut off surrounding air and has been entered by feeding mouth
Enter system, it is to avoid conventional gas-phase classification process, moisture content and the oxygen Oxidation to classification material in air, can be used for nikel powder,
The oxidizable submicron-grade superfine metal-powder anaerobic classifications such as copper powder, glass putty, aluminium powder.
Anaerobic box of the present invention is an airtight casing not connected with outside air, and this casing leads to
Cross support to be connected on blower cover, constitute whole system with miscellaneous equipment；Certainly, anaerobism casing arranges gas feed, change
Hot device is connected end with air-introduced machine and is provided with gas outlet, and when needing anaerobic condition, two mouths are in sealing state, it is also possible to open and make
With.
In the sub-micron-sized metal powder body anaerobic classifying equipoment that the present invention is above-mentioned, all parts is connected by pipeline, is formed close
The system of the full nitrogen closed, material can use the materials such as rustless steel, by welding or the mode such as threaded according to attached
Figure is linked in sequence.
Claims (6)
1. a sub-micron-sized metal powder body anaerobic classifying equipoment, it is characterised in that: this equipment includes charger, anaerobic box, enters
Hopper, dispersion cone, separation chamber, many gas inlet holes ring, exhaust duct, coarse powder room, rewinding bucket, blowback tank, collecting tank, air-introduced machine, heat exchange
Device, filter, blower cover；
Described charger is placed in anaerobic box, and the feed end of feed hopper is placed in anaerobic box, the discharge end of feed hopper with separate
Room connects；Dispersion cone is placed in below the discharge end of feed hopper；The lower end of described separation chamber connects has coarse powder room, under coarse powder room
End connects rewinding bucket；Being provided with the exhaust duct connected with blowback tank in separation chamber, blowback pot sidewall connects with the blast pipe of air-introduced machine
Connecing, the discharge pipe of air-introduced machine is connected with heat exchanger one end, and the heat exchanger other end is connected with one end of filter, another of filter
End is connected with blower cover；Described blower cover sealing shroud together in the junction of separation chamber Yu coarse powder room, be provided with in blower cover with
Many gas inlet holes ring that separation chamber connects；Described separation chamber is inverted cone, and the discharge end of feed hopper is positioned at dispersion cone and separates
On the axis of room.
Sub-micron-sized metal powder body anaerobic classifying equipoment the most according to claim 1, it is characterised in that: described filter
Be provided with the nitrogen valve being connected with source nitrogen between blower cover.
Sub-micron-sized metal powder body anaerobic classifying equipoment the most according to claim 1, it is characterised in that: described exhaust duct
The one end being positioned at separation chamber is circumferentially provided with positioning disk, and described positioning disk is inverted cone.
Sub-micron-sized metal powder body anaerobic classifying equipoment the most according to claim 1, it is characterised in that: described porous is entered
Arrange multiple circumference between compression ring and separation chamber to be uniformly distributed and be the air inlet of tangential direction air inlet with separation chamber's periphery wall.
Sub-micron-sized metal powder body anaerobic classifying equipoment the most according to claim 4, it is characterised in that: described air inlet
Cross section be rectangle, and wide 1mm～20mm in aperture of rectangular opening, aperture high 5～30 mm.
Sub-micron-sized metal powder body anaerobic classifying equipoment the most according to claim 4, it is characterised in that: described air inlet
It is 8～60 holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620308276.0U CN205599522U (en) | 2016-04-13 | 2016-04-13 | Submicron metallic powder does not have oxygen partial pressure level equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620308276.0U CN205599522U (en) | 2016-04-13 | 2016-04-13 | Submicron metallic powder does not have oxygen partial pressure level equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205599522U true CN205599522U (en) | 2016-09-28 |
Family
ID=56972928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620308276.0U Active CN205599522U (en) | 2016-04-13 | 2016-04-13 | Submicron metallic powder does not have oxygen partial pressure level equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205599522U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647639A (en) * | 2019-02-27 | 2019-04-19 | 江南大学 | A kind of ultrasonic atomization grading plant of sub-micron powder and its application |
| CN112439559A (en) * | 2020-12-03 | 2021-03-05 | 宁波广新纳米材料有限公司 | Superfine powder gas-phase classification equipment and classification method thereof |
| CN112439558A (en) * | 2020-12-03 | 2021-03-05 | 宁波广新纳米材料有限公司 | Superfine powder gas-phase classification equipment |
| CN112974245A (en) * | 2021-01-28 | 2021-06-18 | 南县三缘米业有限公司 | Environment-friendly impurity removing device for rice processing |
| WO2022134687A1 (en) * | 2020-12-23 | 2022-06-30 | 江苏博迁新材料股份有限公司 | Gas-phase powder grading device |
-
2016
- 2016-04-13 CN CN201620308276.0U patent/CN205599522U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647639A (en) * | 2019-02-27 | 2019-04-19 | 江南大学 | A kind of ultrasonic atomization grading plant of sub-micron powder and its application |
| CN109647639B (en) * | 2019-02-27 | 2020-02-07 | 江南大学 | Ultrasonic atomization grading device for submicron powder and application thereof |
| CN112439559A (en) * | 2020-12-03 | 2021-03-05 | 宁波广新纳米材料有限公司 | Superfine powder gas-phase classification equipment and classification method thereof |
| CN112439558A (en) * | 2020-12-03 | 2021-03-05 | 宁波广新纳米材料有限公司 | Superfine powder gas-phase classification equipment |
| WO2022134687A1 (en) * | 2020-12-23 | 2022-06-30 | 江苏博迁新材料股份有限公司 | Gas-phase powder grading device |
| CN112974245A (en) * | 2021-01-28 | 2021-06-18 | 南县三缘米业有限公司 | Environment-friendly impurity removing device for rice processing |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 223801 Suqian province high tech Development Zone, Jiangshan Road, No. 23, No. Patentee after: Jiangsu Bo move new materials Limited by Share Ltd Address before: 223800 Huashan Road, Suyu Economic Development Zone, Jiangsu, No. 109, No. Patentee before: Jiangsu Boqian New Materials Co., Ltd. |