CN106694366A - Large micron classifier - Google Patents
Large micron classifier Download PDFInfo
- Publication number
- CN106694366A CN106694366A CN201710018742.0A CN201710018742A CN106694366A CN 106694366 A CN106694366 A CN 106694366A CN 201710018742 A CN201710018742 A CN 201710018742A CN 106694366 A CN106694366 A CN 106694366A
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- Prior art keywords
- housing
- area
- grader
- air inlet
- classification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000000843 powder Substances 0.000 claims abstract description 20
- 230000007704 transition Effects 0.000 claims abstract description 18
- 238000007599 discharging Methods 0.000 claims description 12
- 235000012054 meals Nutrition 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 5
- 230000035807 sensation Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 26
- 239000002245 particle Substances 0.000 abstract description 10
- 230000005484 gravity Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 239000003082 abrasive agent Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- -1 metallurgy Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/02—Arrangement of air or material conditioning accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/06—Feeding or discharging arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
- B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention provides a large micron classifier; the large micron classifier adopts a mode of combining the gravity classification, the free eddy current classification and the forced eddy current classification; particles can be totally dispersed in air currents before classification, so that the air current field is stable; and the whole classifier can classify a lot of materials to achieve high sorting efficiency and low production cost. A shell includes a free eddy current area, a forced eddy current area, a middle transition area and an upper classification area arranged in sequence from bottom to top; the bottom of the free eddy current area is a coarse powder discharge port closed from top to bottom; a first feed port and a natural intake port are respectively formed in a conical surface of the free eddy current area; a discharge shell is arranged in the center position of the upper classification area, and is fixedly mounted in the center position of the lower end surface of a top plate of the shell; and a fine powder discharge pipe is arranged in the center position of the discharge shell from bottom to top.
Description
Technical field
The present invention relates to the technical field of stock grading, specially a kind of large-scale micrometer grader.
Background technology
Gas flow sizing machine is widely used in chemical industry, mineral, metallurgy, abrasive material, ceramics, refractory material, medicine, agricultural chemicals, food
Etc. industry.Material enters its inner chamber under the wind-force effect of air inducing unit by the charging aperture of gas flow sizing machine lower end, and with upper
The supreme portion's graded region of air-flow high-speed motion is risen, under the powerful centrifugal action of the sorting unit generation of high speed rotation, makes thickness
Feed separation, the fine grained for meeting Particle size requirements enters discharge chamber by sorting unit impeller clearance, and is exported by discharging opening, slightly
Speed disappears after particle hits wall, is dropped to along barrel and discharged at discharge port.With the development of society, the granularity requirements of product are more next
It is higher, and energy-conserving and environment-protective also turn into primary requirement of the industry-by-industry to equipment.However, existing gas flow sizing machine airflow field is mixed
Disorderly, distribution of air flow is unreasonable, and so as to cause effectiveness of classification not high, fineness not enough, while the sealing structure of equipment is unreasonable, is sorted
Efficiency is low, and the distinct issues such as energy consumption is high, production cost also accordingly increases.Existing classification motor and classifying turbine are by connection
Axle device carries out direct-connected, due to needing the position of extra arrangement classification motor, causes the housing floor space of whole grader big, enters
And limiting the quantity arrangement of classifying turbine of knowing clearly so that whole grader can not carry out extensive material treatment.
The content of the invention
Regarding to the issue above, the invention provides a kind of large-scale micrometer grader, it uses gravity, free vortex flow and pressure
Swirl classifying is combined mode, and the particle before classification can be completely dispersed in the gas flow, and it causes airflow field stabilization, and whole classification
Function is largely classified material so that the efficiency of separation is high, low production cost.
A kind of large-scale micrometer grader, it is characterised in that：It is free vortex flow area that housing includes sequentially arranging from bottom to top, strong
Vortex processed, middle part transition region, top graded region, the bottom in the free vortex flow area are the meal blanking from up to down closed up
Mouthful, first charging aperture, natural air inlet mouth, the center of the top graded region are respectively arranged with the conical surface in the free vortex flow area
Position is provided with discharging housing, and the discharging housing is installed in the center of the lower surface of the top board of the housing, it is described go out
The center of material shell body is provided with the fine powder discharge nozzle arranged from bottom to top, and the bottom outer ring surface of the fine powder discharge nozzle is uniform
The radial outer end for having many pan feeding passages for extending radially outwardly, the pan feeding passage is provided with outer shroud installing plate, the fine powder
The convex top board in housing of discharge nozzle, the fine powder discharge nozzle is located at the center of the top board of the housing, the top board
Upper end face ring is furnished with six motors, and the output end of each motor is connected to positioned at the housing sidewall position by belt respectively
The input of bearing block, the output end of the bearing block is located at the inside of the top graded region of the housing, each described bearing
The output end of seat is respectively installed with grading wheel, and the inner end plate of the grading wheel is installed in the outer shroud installing plate of correspondence position respectively,
The motor, pan feeding passage, bearing block, respectively each six of the quantity of grading wheel, one-to-one corresponding and each correspondence arrangement installation.
It is further characterized by：
The forced vortex area is the circular cone structure for closing up from bottom to top, and the outer ring surface in the forced vortex area is provided with
Circular air inlet pipe, the exit of the circular air inlet pipe is connected to the outer shroud air inlet in the forced vortex area by oblique blade,
The air intake sets and causes that the wind speed for entering forced vortex area becomes big, and because the pipeline of the circular cone structure for closing up from bottom to top sets
Put so that material forced vortex area by fully diffusion, then diffuse up；
The transition region is the rounding frustum structure of enlarging from bottom to top, and it is easy to material uniformly to spread upwards；
The top graded region is cylindrical structural, and the lower section of the top graded region sets near the position of the transition region
It is equipped with and is respectively provided with observation window construction, second charging aperture, the observation window is for observing material mixing situation, to adjust annular
The blast of blast pipe and the charging situation of charging aperture；
The second charging aperture is circumscribed with charging transition conduit obliquely, and the upper part of the charging transition conduit is vertical
End, it ensures that material can be then equal in the presence of the air-flow of lower end by the smooth cavity for entering into top graded region of gravity
Even diffusion；
The top board is provided with the first air inlet, and first air inlet is communicated to the discharging housing, fine powder discharge nozzle
The transitional cavity that is constituted of outer wall in；
Mounting flange on the shell of each bearing block, the mounting flange is fastenedly connected the corresponding position of housing sidewall
Put, the inner chamber of the bearing block is provided with air-tight structure, prevent from being mixed into particle or oily pollution material in bearing, it is ensured that the bearing longevity
Life and safe handling.
After the present invention, material enters grader, and first in forced vortex area, external wind is acted on material pneumatic jig, is made
Particle is fully dissipated, and rises to graded region, and material is classified in graded region by grading wheel, does not reach the coarse grain of requirement along container
Wall is screwed off to free turbine area, and extraneous natural wind is rectified into homogeneous eddy flow, will mix or stick to the particulate point in meal
From the coarse grain after separation is discharged from bottom coarse grain mouthful, and the particulate for reaching requirement is received with trap is finally entered in air current classifying wheel
Collection, packaging, gas is discharged from air-introduced machine after purification；It uses the classification of gravity, free vortex flow and forced vortex to be combined mode, point
Particle before level can be completely dispersed in the gas flow, and it causes airflow field stabilization, and whole classification function is largely classified material so that
The efficiency of separation is high, low production cost；And due to being transmitted by belt, bearing block between motor and grading wheel so that classification
The quantity of wheel can be arranged according to the actual requirements so that whole grader can carry out extensive material treatment.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is partial enlargement structural representation at the A of Fig. 1；
Reference name in figure corresponding to each sequence number is as follows：
Free vortex flow area 1, forced vortex area 2, middle part transition region 3, top graded region 4, meal feed opening 5, first feed
Mouthfuls 6, natural air inlet mouth 7, discharging housing 8, top board 9, fine powder discharge nozzle 10, pan feeding passage 11, outer shroud installing plate 12, motor 13,
Belt 14, bearing block 15, grading wheel 16, circular air inlet pipe 17, oblique blade 18, second charging aperture 19, charging transition conduit 20, first
Air inlet 21, transitional cavity 22, mounting flange 24, observation window construction 25.
Specific embodiment
A kind of large-scale micrometer grader, is shown in Fig. 1：Housing includes the free vortex flow area 1, forced vortex for sequentially arranging from bottom to top
Stream area 2, middle part transition region 3, top graded region 4, the bottom in free vortex flow area 1 is the meal feed opening 5 for from up to down closing up, from
First charging aperture 6, natural air inlet mouth 7 are respectively arranged with the conical surface by vortex 1, the center of top graded region 4 is set
There is discharging housing 8, discharging housing 8 is installed in the center of the lower surface of the top board 9 of housing, the center of the housing 8 that discharges
The fine powder discharge nozzle 10 arranged from bottom to top is provided with, the bottom outer ring surface of fine powder discharge nozzle 10 is evenly equipped with many and radially outward prolongs
The pan feeding passage 11 stretched, the radial outer end of pan feeding passage 11 is provided with outer shroud installing plate 12, and fine powder discharge nozzle 10 is convex in housing
Top board 9, fine powder discharge nozzle 10 is located at the center of the top board 9 of housing, and the upper end face ring of top board 9 is furnished with several motors
13, the output end of each motor 13 is connected to the input of the bearing block 15 positioned at housing sidewall position by belt 14 respectively,
The output end of bearing block 15 is located at the inside of the top graded region 4 of housing, and the output end of each bearing block 15 is respectively installed with point
Step cone 16, the inner end plate of grading wheel 16 is installed in the outer shroud installing plate 12 of correspondence position, motor 13, pan feeding passage 11, axle respectively
Bearing 15, the quantity of grading wheel 16 are corresponded and each correspondence arrangement is installed.
Forced vortex area 2 is the circular cone structure for closing up from bottom to top, and the outer ring surface in forced vortex area 2 is provided with annular and enters
Airduct 17, the exit of circular air inlet pipe 17 is connected to the outer shroud air inlet in forced vortex area 2 by oblique blade 18, and the air intake sets
Put and cause that the wind speed for entering forced vortex area 2 becomes big, and because the pipeline of the circular cone structure for closing up from bottom to top is set so that
Material forced vortex area 2 by fully diffusion, then diffuse up；
Transition region 3 is the rounding frustum structure of enlarging from bottom to top, and it is easy to material uniformly to spread upwards；
Top graded region 4 is cylindrical structural, and the lower section of top graded region 4 is provided with difference near the position of transition region 3
Observation window construction 25, second charging aperture 19 are set, and observation window construction 25 is used to observe material mixing situation, enters to adjust annular
The blast and first charging aperture 6 of airduct 17, the charging situation of second charging aperture 19；
Second charging aperture 19 is circumscribed with charging transition conduit 20 obliquely, and it is vertical to feed the upper part of transition conduit 20
End, it ensures that material can be then equal in the presence of the air-flow of lower end by the smooth cavity for entering into top graded region 4 of gravity
Even diffusion；
Top board 9 is provided with the first air inlet 21, the first air inlet 21 be communicated to discharging housing 8, fine powder discharge nozzle 10 it is outer
In the transitional cavity 22 that wall is constituted；
Mounting flange 24 on the shell of each bearing block 15, mounting flange 24 is fastenedly connected the correspondence position of housing sidewall,
The inner chamber of bearing block 15 is provided with air-tight structure, prevents from being mixed into particle or oily pollution material in bearing, it is ensured that bearing life and
Safe handling；
In specific embodiment, motor 13, pan feeding passage 11, bearing block 15, the quantity of grading wheel 16 are six.
Its operation principle is as follows：First in forced vortex area 2, external wind is acted on material pneumatic jig, particle is fully dissipated,
And graded region 4 is risen to, material is classified in graded region, and the coarse grain for not reaching requirement is screwed off to free turbine area 1 along container wall,
Extraneous natural wind is rectified into homogeneous eddy flow, will mix or stick to the fines segregation in meal, and the coarse grain after separation is from bottom
Coarse grain mouthful 5 is discharged, and the particulate for reaching requirement enters in grading wheel 16 with air-flow, and final grain of inhaling is discharged from fine powder discharge nozzle 10, is entered
Enter trap to collect, pack, gas is discharged from air-introduced machine after purification；It uses gravity, free vortex flow and forced vortex classification phase
Combination, the particle before classification can be completely dispersed in the gas flow, and it causes that airflow field stabilization, and whole classification function are largely divided
Level material so that the efficiency of separation is high, low production cost.
Wherein the first charging aperture 6 of grader, second charging aperture 19 can respectively with the powder such as various large-size ball mills, roller mill
Mill equipment is used in series, and composition loop circuit is crushed, wherein can select to access connection second from the meal of the outflow of meal feed opening 5
The entrance of the milling equipment of charging aperture 19, such coarse fodder improves material by flowing into second charging aperture 19 after grinding again
Utilization rate；The specific material for how arranging first charging aperture 6, second charging aperture 19 is according to actual conditions setting.When classification is worn and torn
Property strong material when, housing can add the wear-resistant liner, grading wheel 16 can to use high-abrasive material, prevent abrasion.
Specific embodiment of the invention has been described in detail above, but content is only the preferable implementation of the invention
Example, it is impossible to be considered as the practical range for limiting the invention.All impartial changes made according to the invention application range
Change and improve etc., all should still belong within this patent covering scope.
Claims (7)
1. a kind of large-scale micrometer grader, it is characterised in that：Housing includes the free vortex flow area for sequentially arranging from bottom to top, forces
Vortex, middle part transition region, top graded region, the bottom in the free vortex flow area are the meal feed opening for from up to down closing up,
First charging aperture, natural air inlet mouth, the centre bit of the top graded region are respectively arranged with the conical surface in the free vortex flow area
Install and be equipped with discharging housing, the discharging housing is installed in the center of the lower surface of the top board of the housing, the discharging
The center of housing is provided with the fine powder discharge nozzle arranged from bottom to top, and the bottom outer ring surface of the fine powder discharge nozzle is evenly equipped with
The pan feeding passage that the six roots of sensation extends radially outwardly, the radial outer end of the pan feeding passage is provided with outer shroud installing plate, and the fine powder goes out
The convex top board in housing of expects pipe, the fine powder discharge nozzle be located at the housing top board center, the top board it is upper
End face ring is furnished with six motors, and the output end of each motor is connected to the axle positioned at the housing sidewall position by belt respectively
The input of bearing, the output end of the bearing block is located at the inside of the top graded region of the housing, each described bearing block
Output end be respectively installed with grading wheel, the inner end plate of the grading wheel is installed in the outer shroud installing plate of correspondence position, institute respectively
Each six of the quantity of motor, pan feeding passage, bearing block, grading wheel is stated, is corresponded respectively and each correspondence arrangement is installed.
2. a kind of large-scale micrometer grader as claimed in claim 1, it is characterised in that：The forced vortex area is for from bottom to top
The circular cone structure of closing in, the outer ring surface in the forced vortex area is provided with circular air inlet pipe, the outlet of the circular air inlet pipe
Place is connected to the outer shroud air inlet in the forced vortex area by oblique blade.
3. a kind of large-scale micrometer grader as claimed in claim 1, it is characterised in that：The transition region is enlarging from bottom to top
Rounding frustum structure.
4. a kind of large-scale micrometer grader as claimed in claim 1, it is characterised in that：The top graded region is tied for cylinder
Structure, the lower section of the top graded region is provided near the position of the transition region and is respectively provided with observation window construction, the second charging
Mouthful.
5. a kind of large-scale micrometer grader as claimed in claim 1, it is characterised in that：The second charging aperture is circumscribed with oblique
On charging transition conduit, the upper part of the charging transition conduit is vertical end.
6. a kind of large-scale micrometer grader as claimed in claim 3, it is characterised in that：The top board is provided with the first air inlet
Mouthful, first air inlet is communicated in the discharging housing, the transitional cavity that the outer wall of fine powder discharge nozzle is constituted.
7. a kind of large-scale micrometer grader as claimed in claim 1, it is characterised in that：Pacify on the shell of each bearing block
Dress flange, the mounting flange is fastenedly connected the correspondence position of housing sidewall, and the inner chamber of the bearing block is provided with airtight sealed knot
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018742.0A CN106694366A (en) | 2017-01-11 | 2017-01-11 | Large micron classifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018742.0A CN106694366A (en) | 2017-01-11 | 2017-01-11 | Large micron classifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106694366A true CN106694366A (en) | 2017-05-24 |
Family
ID=58908246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710018742.0A Pending CN106694366A (en) | 2017-01-11 | 2017-01-11 | Large micron classifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106694366A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107755270A (en) * | 2017-11-13 | 2018-03-06 | 盐城吉达环保设备有限公司 | A kind of multichannel feeds grader |
| CN112108365A (en) * | 2020-08-07 | 2020-12-22 | 中北大学 | Environment-friendly bauxite desilication device and use method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5366095A (en) * | 1993-11-15 | 1994-11-22 | Christopher Martin | Air classification system |
| CN2263554Y (en) * | 1996-05-21 | 1997-10-01 | 中国石油化工总公司 | Turbine powdery particle classificator |
| CN201216997Y (en) * | 2008-05-05 | 2009-04-08 | 张晓东 | Ultramicro airflow classifier |
| CN202290573U (en) * | 2011-09-23 | 2012-07-04 | 东莞市五全塑胶制品有限公司 | Ultra-fine grader |
| CN202316310U (en) * | 2011-11-15 | 2012-07-11 | 山东华特磁电科技股份有限公司 | Horizontal airflow classifier |
| CN103567089A (en) * | 2012-07-31 | 2014-02-12 | 昆山市密友粉体设备工程有限公司 | High-accuracy grading machine |
| CN103639119A (en) * | 2013-12-11 | 2014-03-19 | 青岛世纳机械设备有限公司 | Micron-grade energy-saving type double-impeller superfine classifier |
| CN206701724U (en) * | 2017-01-11 | 2017-12-05 | 江苏密友粉体新装备制造有限公司 | A kind of large-scale micrometer grader |
-
2017
- 2017-01-11 CN CN201710018742.0A patent/CN106694366A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5366095A (en) * | 1993-11-15 | 1994-11-22 | Christopher Martin | Air classification system |
| CN2263554Y (en) * | 1996-05-21 | 1997-10-01 | 中国石油化工总公司 | Turbine powdery particle classificator |
| CN201216997Y (en) * | 2008-05-05 | 2009-04-08 | 张晓东 | Ultramicro airflow classifier |
| CN202290573U (en) * | 2011-09-23 | 2012-07-04 | 东莞市五全塑胶制品有限公司 | Ultra-fine grader |
| CN202316310U (en) * | 2011-11-15 | 2012-07-11 | 山东华特磁电科技股份有限公司 | Horizontal airflow classifier |
| CN103567089A (en) * | 2012-07-31 | 2014-02-12 | 昆山市密友粉体设备工程有限公司 | High-accuracy grading machine |
| CN103639119A (en) * | 2013-12-11 | 2014-03-19 | 青岛世纳机械设备有限公司 | Micron-grade energy-saving type double-impeller superfine classifier |
| CN206701724U (en) * | 2017-01-11 | 2017-12-05 | 江苏密友粉体新装备制造有限公司 | A kind of large-scale micrometer grader |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107755270A (en) * | 2017-11-13 | 2018-03-06 | 盐城吉达环保设备有限公司 | A kind of multichannel feeds grader |
| CN112108365A (en) * | 2020-08-07 | 2020-12-22 | 中北大学 | Environment-friendly bauxite desilication device and use method thereof |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
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| RJ01 | Rejection of invention patent application after publication |