CN101947514B - Coarse fraction powder concentrator - Google Patents

Coarse fraction powder concentrator Download PDF

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Publication number
CN101947514B
CN101947514B CN201010514612A CN201010514612A CN101947514B CN 101947514 B CN101947514 B CN 101947514B CN 201010514612 A CN201010514612 A CN 201010514612A CN 201010514612 A CN201010514612 A CN 201010514612A CN 101947514 B CN101947514 B CN 101947514B
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CN
China
Prior art keywords
shell
housing
coarse fraction
last
bearing block
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Expired - Fee Related
Application number
CN201010514612A
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Chinese (zh)
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CN101947514A (en
Inventor
陈蕾
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Changsha University
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陈蕾
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Priority to CN201010514612A priority Critical patent/CN101947514B/en
Publication of CN101947514A publication Critical patent/CN101947514A/en
Application granted granted Critical
Publication of CN101947514B publication Critical patent/CN101947514B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention relates to a coarse fraction powder concentrator which comprises an engine base, a bearing block, a transmission wheel, a hollow spindle, a spreading disk, a large fan blade, an inner shell and an outer shell, wherein the bearing block is arranged on an engine cover; the hollow spindle is arranged on the bearing block through a bearing, and a material inlet is arranged above the hollow spindle; the transmission wheel, the spreading disk and the large fan blade are assembled on the hollow spindle to form a rotor component capable of rotating; the outer shell consists of an upper outer shell and a lower outer shell; the engine base is arranged outside the outer shell; the lower part of the lower outer shell is provided with a fine powder outlet; the inner shell is arranged in an inner cavity formed by the outer shell and consists of an upper inner shell and a lower inner shell; the lower part of the lower inner shell is provided with a coarse powder outlet; and air return blades are arranged between the upper inner shell and the lower inner shell. The invention has the advantages of simple structure, high efficiency, large treatment capacity, long service life and no need of an external fan.

Description

The coarse fraction powder concentrator
Technical field
The present invention relates to a kind of granular material dry separation device, especially relate to a kind of coarse fraction granular material dry separation device that is applied to industries such as nonmetallic ore, new material.
Background technology
Dry method powder concentrator commonly used mainly contains centrifugal, cyclone type, rotator type etc. in the industry; Its common feature is to utilize wind-force that material is blown from bottom to top; When material is blown to classification rotor that plays the fence effect or little fan blade; Thicker material makes downward power fall into the meal district greater than the strength that makes progress owing to effects such as receiving gravity, centrifugal force, and fine powder then continues upwards to get into the fine powder district.These powder concentrators must have bigger classification height could carry out separation thick, fine powder owing to regulate the finished product powder fineness by the rotating speed that changes little fan blade quantity and classifying turbine.
In theory; General powder concentrator leans on wind-force to overcome and sorts after gravity promotes material, classification, and owing to the wind area of material is directly proportional with the quadratic power of particle diameter, weight is directly proportional with the cube of material particular diameter; So large granular materials and heavy material, be difficult for being raised and sort, classification.If the feed separation particle diameter is big; Because increasing along with particle diameter; The increase of gravity is much larger than the increase of wind-force; Air-flow upwards will be difficult to classification rotor or the little fan blade that thick material promotes than big height to grading to realize, so these common powder concentrators only are suitable for carrying out the classification of thin (like-80 orders, promptly particle diameter is less than 0.175mm) material.
CN100522393C discloses a kind of " coarse particle separator ", can realize that coarse granule selects the purpose of powder, but owing to must material be promoted the peripheral hardware blower fan, makes hierarchy system become comparatively complicated.
Summary of the invention
The object of the present invention is to provide a kind of efficient high, disposal ability is strong, and long service life is without the powder concentrator that is suitable for coarse fraction material or big proportion stock grading of peripheral hardware blower fan.
The objective of the invention is to realize through following technical scheme: it comprises support, bearing block, drive, hollow main shaft, spreading disk, big blade, inner housing, shell body for vertical structure, and said bearing block is installed on the cover; Said hollow main shaft is installed on the bearing block through bearing, and charging aperture is located at the top of hollow main shaft; Said drive, spreading disk, big blade are assemblied on the hollow main shaft, constitute rotary rotor part; Said shell body is made up of last shell body, lower casing body two parts, and support is located at the shell body outside, is used for the installation of machine, and lower casing body bottom is provided with the fine powder outlet; The inner chamber that said inner housing places shell body to constitute, inner housing is made up of last inner housing, following inner housing two parts, and following inner housing bottom is provided with the meal outlet, is provided with the return air blade between last inner housing, the following inner housing.
Last inner housing top is provided with the annular collet of the level that is connected with it, is used to prevent that powder and air-flow from passing through from the composition surface.
During work, rotor part rotates through its drive and drive unit connection, and the wind (air-flow) that the big blade rotation produces through the passage between last inner housing and the last shell body from top to bottom; Get into the inside of inner housing again through the return air blade, flow from bottom to top, form circle stream; Material gets into the back from charging aperture and drops on the spreading disk through hollow main shaft; Spread center cavity graded region in the machine that constitutes to spreading disk top, the inside of going up inner housing and top by spreading disk, thick material exports outside the discharge machine from the meal of inner housing bottom down because gravity accounts for and leadingly falls; Fine powder is then driven by air-flow and rises; Get in the fine powder district that constitutes by cavity between inner housing and the shell body through inner housing top,, discharge from the fine powder outlet of lower casing body bottom at last because whirlwind tube effect falls along last shell body inwall.Sorting grade can be through quantity, size, shape, the installation site of adjusting big blade, the structure of spreading disk, size, and rotor speed, or set up the through type annular and select powder blade or screen cloth etc. to adjust.
Compare with existing dry method powder concentrator, the present invention has saved the classification rotor or the little fan blade of rotation, has reduced the distance of material from graded region, makes the material of larger particles can be promoted to graded region, thereby reaches the purpose than coarse grain footpath stock grading.Compare with centrifugal classifier, structure is simpler, and material is more evenly distributed from central feeding, and efficient is higher.
Should be noted that the present invention is not suitable for the classification of fine grain (like cut diameter less than 0.1mm) material, reason is that powder-separating space is less, selects the powder segmentation precision lower to fine fraction, and the classification of fine grain material is fit to the dry method powder concentrator that adopts background technology to describe.
When adopting technical scheme of the present invention to carry out coarse grain footpath stock grading; If the size distribution of fine powder is strict; Can the through type annular be set between the opening part above the inner housing to upper-cover and select powder blade or screen cloth, thereby prevent to get into the fine powder district than coarse grain footpath material.
For improving classification efficiency, also can on the conical surface of following inner housing, screen cloth be set.
The present invention is simple in structure, and efficient is high, and disposal ability is strong, and long service life need not the peripheral hardware blower fan.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the structural representation of the embodiment of the invention 2;
Fig. 3 is the structural representation of the embodiment of the invention 3.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Embodiment 1
With reference to Fig. 1, present embodiment comprises support 803, bearing block 2, drive 1, hollow main shaft 3, spreading disk 5, big blade 6, inner housing, shell body, and said bearing block 2 is installed on the cover 9; Said hollow main shaft 3 is installed on the bearing block 2 through bearing, and charging aperture is located at the top of hollow main shaft; Said drive 1, spreading disk 5, big blade 6 are assemblied on the hollow main shaft 3, constitute rotary rotor part; Said shell body is made up of last shell body 801, lower casing body 802 2 parts, and support 803 is located at the shell body outside, is used for the installation of machine, and lower casing body 802 bottoms are provided with fine powder outlet 804; The inner chamber that said inner housing places shell body to constitute, inner housing are by last inner housing 701, inner housing 702 2 parts are formed down, and following inner housing 702 bottoms are provided with meal outlet 704, are provided with return air blade 703 between last inner housing 701, time inner housing 702; Last inner housing 701 tops are provided with the annular collet 705 of the level that is connected with it.
During work; Drive 1 is linked to each other with external drive unit (not shown); Drive 1 drives the rotor part rotation, and the wind (air-flow) that big blade 6 rotations produce gets into the inside of inner housing through the passage between last inner housing 701 and the last shell body 801 from top to bottom again through return air blade 703; Flow from bottom to top, form circle stream (shown in arrow A among the figure); Material B to be fractionated is got into the back from charging aperture 4 to be dropped on the spreading disk 5 through hollow main shaft 3; Spread center cavity graded region in the machine that constitutes to spreading disk 5 tops, the inside of going up inner housing 701 and top through spreading disk 5; Thick material is dominated owing to gravity accounts for; Export outside the 704 discharge machines from the meal of following inner housing 702 bottoms, fine powder is then driven by air-flow and rises, and gets into through inner housing top in the fine powder district that is made up of cavity between inner housing and the shell body; Because whirlwind tube effect falls along the shell body inwall, discharge from the fine powder outlet 804 of lower casing body 802 bottoms at last.Sorting grade can be through quantity, size, shape, the installation site of adjusting big blade, the structure of spreading disk, size, and rotor speed etc. are adjusted.
Embodiment 2
With reference to Fig. 2, present embodiment is compared with embodiment 1, and difference only is that between opening part to the cover 9 above the last inner housing 701, having set up the through type annular selects powder blade 10.All the other are with embodiment 1.The thin material that only meets granularity requirements could select powder blade 10 through said through type annular, gets into the fine powder district, has realized classification for the second time, thereby helps realizing the strictness control to the fine powder particle diameter.Simple in structure, classification efficiency is high.
Embodiment 3
With reference to Fig. 3, present embodiment is compared with embodiment 1, and difference only is setting up screen cloth 11 between the cover 9 above the last inner housing 701.All the other are with embodiment 1.Have only powder material could get into the fine powder district, realized classification for the second time, thereby help realizing strictness control the fine powder particle diameter through screen cloth 11 sieve apertures.
Said screen cloth 11 and common sieve screening material have 2 different: the one, the material that gets into this screen cloth is through air current classifying, screen cloth only need intercept on a small quantity than coarse fraction entering fine powder district, needn't resemble common sieve and need handle all materials; The 2nd, the material that gets into this screen cloth is to be suspended in the gas, and screening efficiency is high and be difficult for the obstruction sieve aperture, does not resemble common sieve and leans on gravitational field screening material.Utilize existing gas on the structure, powder passage to realize second level classification, structure is simpler, and classification efficiency is higher.

Claims (5)

1. a coarse fraction powder concentrator comprises support, bearing block, drive, hollow main shaft, spreading disk, big blade, inner housing, shell body, it is characterized in that, said bearing block is installed on the cover; Said hollow main shaft is installed on the bearing block through bearing, and charging aperture is located at the top of hollow main shaft; Said drive, spreading disk, big blade are assemblied on the hollow main shaft, constitute rotary rotor part; Said shell body is made up of last shell body, lower casing body two parts, and support is located at the shell body outside, and lower casing body bottom is provided with the fine powder outlet; The inner chamber that said inner housing places shell body to constitute, inner housing is made up of last inner housing, following inner housing two parts, and following inner housing bottom is provided with the meal outlet, is provided with the return air blade between last inner housing, the following inner housing.
2. coarse fraction powder concentrator according to claim 1 is characterized in that, last inner housing top is provided with the annular collet of the level that is connected with it.
3. coarse fraction powder concentrator according to claim 1 and 2 is characterized in that, between opening part to the upper-cover of inner housing top the through type annular is set and selects the powder blade.
4. coarse fraction powder concentrator according to claim 1 and 2 is characterized in that, between opening part to the upper-cover of inner housing top screen cloth is set.
5. coarse fraction powder concentrator according to claim 1 and 2 is characterized in that, on the conical surface of following inner housing screen cloth is set.
CN201010514612A 2010-10-21 2010-10-21 Coarse fraction powder concentrator Expired - Fee Related CN101947514B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010514612A CN101947514B (en) 2010-10-21 2010-10-21 Coarse fraction powder concentrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010514612A CN101947514B (en) 2010-10-21 2010-10-21 Coarse fraction powder concentrator

Publications (2)

Publication Number Publication Date
CN101947514A CN101947514A (en) 2011-01-19
CN101947514B true CN101947514B (en) 2012-10-03

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102671859B (en) * 2011-03-07 2014-04-30 中国科学院过程工程研究所 Fluidized sorting device for tiny solid particles and method thereof
CN103964513B (en) * 2014-05-05 2015-07-08 南通宝聚颜料有限公司 Continuous ferrous sulfate free acid separation device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5366095A (en) * 1993-11-15 1994-11-22 Christopher Martin Air classification system
CN2183829Y (en) * 1993-11-27 1994-11-30 国家建材局合肥水泥研究设计院 Material grading apparatus
CN2210722Y (en) * 1994-04-05 1995-10-25 南京化工学院 High-efficiency centrifugal powder-sieving machine
JP3477437B2 (en) * 2000-10-13 2003-12-10 川崎重工業株式会社 Airflow classifier
CN2822803Y (en) * 2005-09-19 2006-10-04 夏纪勇 Powder selecting machine for coarse grain
CN100522393C (en) * 2005-09-19 2009-08-05 夏纪勇 Coarse particle separator

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Granted publication date: 20121003

Termination date: 20171021