CN200974043Y - Centrifugal classifier for classifying nanometer-grade grains - Google Patents
Centrifugal classifier for classifying nanometer-grade grains Download PDFInfo
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- CN200974043Y CN200974043Y CN 200620151464 CN200620151464U CN200974043Y CN 200974043 Y CN200974043 Y CN 200974043Y CN 200620151464 CN200620151464 CN 200620151464 CN 200620151464 U CN200620151464 U CN 200620151464U CN 200974043 Y CN200974043 Y CN 200974043Y
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- grading
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- division board
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Abstract
A centrifugal grading machine used for grading of nano-level particles is provided, which consists of a feeding device, a speed adjustment motor, and a grading machine body; the center of grading machine body is a revolving shaft and is connected with the speed adjustment motor through a shaft coupler; the revolving shaft is fixed with an inner sleeve and an outer sleeve, the middle part of the inner and outer sleeves are fixed with an upper isolation baffle and a lower isolation baffle of the circular ring on the revolving shaft; the inner side of the revolving shaft top part is fixed with an insulating sleeve, separating a feeding inlet for original solution and a feeding inlet for mother solution; an outlet for fine particle solution is arranged between the inner sleeve and the lower isolation baffle, and an outlet for coarse particle solution is arranged between the outer sleeve and the lower isolation baffle; the grading machine body is as the support through an end surface bearing positioned in the lower part of the revolving shaft. The utility model has the advantages of: short grading time and high production efficiency comparing with the grading method of free settling; high grading precision degree; in addition, the stay time for particles in the grading field can be adjusted through adjusting the feed flow speed, which is difficult to form sediment on the outer side surface of the grading field, thereby realizing continuous operation of the grading process.
Description
(1) technical field
The utility model relates to a kind of centrifugal grader that is used for the subparticle classification, particularly a kind of centrifugal grader that is used for the nano-scale particle classification.
(2) background technology
Be accompanied by the popularization that nanometer technology is used, the classification problems of nano particle more and more obtains paying attention to.For example, used opacifier titanium dioxide in the fiber industry, needing in concrete use particle diameter is that particle more than 1000 nanometers all separates rejecting, otherwise will influence the intensity of fiber, occurs broken string easily; When hyperfine surface was polished, requiring average grain diameter was the high-precision extra-fine grinding polishing agent of hundreds of nanometer or even tens nanometers, as silica, cerium oxide etc., need carry out strict classification to nano particle equally.When at present size distribution being required extremely strict nano level superfine gradation, most of multistage subsider that adopts carries out the classification of wet type gravitational settling.Use the shortcoming of settling methods to be: because particle is very little, sinking speed is very slow, and be subject to extraneous interference and influence the precision of classification, so production efficiency is low, poor product quality, manufacturing cost height, and will waste great amount of water resources and be used for its dry thermal resource.In addition, foreign patent US20040491474 has provided a kind of equipment of centrifugal classification, but this equipment has limitation in the use, and be embodied in three aspects: 1) removal to big particle is incomplete; 2) the classification rate of recovery of product is low; 3) can not move continuously.
(3) utility model content
The purpose of this utility model is at the problems referred to above, the centrifugal grader that is used for the nano-scale particle classification that provide a kind of effectiveness of classification height, can move continuously.
The technical solution of the utility model:
A kind of centrifugal grader that is used for the nano-scale particle classification is characterized in that: be made up of feed arrangement, buncher and grader body; Feed arrangement comprises stoste solution feed pump and mother liquor solution feed pump; Grader body center is gyroaxis and is connected with buncher by shaft joint; Be fixed with concentric inner sleeve and outer sleeve on the gyroaxis, be provided with division board and following division board on the annular that is fixed on the gyroaxis in the middle of inner sleeve and the outer sleeve; The gyroaxis inside top is fixed with distance sleeve, by being connected of distance sleeve and last division board stoste supply port and mother liquor supply port being separated; Between inner sleeve and following division board, be provided with fine grained liquid outlet, between outer sleeve and following division board, be provided with coarse granule liquid outlet; The end face bearing of grader body by being positioned at the gyroaxis bottom is as support.
A kind of above-mentioned centrifugal grader that is used for the nano-scale particle classification, it is characterized in that: the power of buncher is 2～5kw, speed adjustable range is 200～5000 rev/mins.
A kind of above-mentioned centrifugal grader that is used for the nano-scale particle classification is characterized in that: the gyroaxis of grader body, inner sleeve, outer sleeve, last division board, following division board, distance sleeve all adopt the stainless steel manufacturing.
A kind of above-mentioned centrifugal grader that is used for the nano-scale particle classification, it is characterized in that: the fixed form of inner and outer sleeves and upper and lower division board and distance sleeve and gyroaxis is welding.
The utility model has the advantages that: 1) compare with the natural subsidence hierarchical approaches, the speed of gyration of centrifugal grader is far longer than the sinking speed in the natural subsidence, can regulate owing to speed of gyration simultaneously, therefore centrifugal acceleration also can be controlled arbitrarily, the time of classification process is shortened, improved production efficiency; 2) under bigger action of centrifugal force, stoste and mother liquor itself keeps stable, not disorderly, unmixed state easily, improved effectiveness of classification; 3) can adjust the time of staying of particle in the classification territory by adjusting liquid supply speed, make the thickest particle before arriving the overseas side surface of classification, just be rejected to outside the grader, be unlikely on the outer surface in classification territory, to form deposition, realize that classification process moves continuously.
(4) description of drawings
The described centrifugal grader structural representation that is used for the nano-scale particle classification.
Among the figure: 1. mother liquor import 2. stoste imports 3. distance sleeves 4. gyroaxises
5. go up 8. times division boards of division board 6. inner sleeves, 7. outer sleeves
9. coarse granule liquid outlet 10. fine grained liquid outlets
11. stoste supply port 12. mother liquor supply ports 13. mother liquor solution feed pumps
14. stoste solution feed pump 15. end face bearings 16. bunchers
(5) specific embodiment
Embodiment: referring to accompanying drawing
A kind of centrifugal grader that is used for the nano-scale particle classification is made up of feed arrangement, buncher and grader body; Feed arrangement comprises stoste solution feed pump 14 and mother liquor solution feed pump 13; Grader body center is gyroaxis 4 and is connected with buncher 16 by shaft joint; Be fixed with concentric inner sleeve 6 and outer sleeve 7 on the gyroaxis 4, be provided with division board 5 and following division board 8 on the annular that is fixed on the gyroaxis 4 in the middle of inner sleeve 6 and the outer sleeve 7; The gyroaxis inside top is fixed with distance sleeve 3, by being connected of distance sleeve 3 and last division board 5 stoste supply port 11 and mother liquor supply port 12 being separated; Between inner sleeve 6 and following division board 8, be provided with fine grained liquid outlet 10, between outer sleeve and following division board, be provided with coarse granule liquid outlet 9; The grader body supports by end face bearing 15 conducts that are positioned at the gyroaxis bottom; The power of buncher is 3kw, 3000 rev/mins of rotating speeds; The gyroaxis of grader body, inner sleeve, outer sleeve, last division board, following division board, distance sleeve all adopt the stainless steel manufacturing; The fixed form of inner and outer sleeves and upper and lower division board and distance sleeve and gyroaxis is welding.
As shown in drawings, the mother liquor that contains the stoste of subparticle and do not contain subparticle enters grader respectively from stoste supply port 2 and mother liquor supply port 1; Stoste flows into through supply port 11, and mother liquor flows into through supply port 12, enters after speed governing in the classification territory between the inner and outer sleeves; The interface of stoste and mother liquor can not get muddled because of the different of speed separately, promptly this interface will keep stable along the centerline direction in classification territory in whole classification territory, like this since the disorder mixing of the entrained particle that the liquid mixing causes will effectively be suppressed; When subparticle carries the motion of longshore current line direction by stoste, owing to be subjected to powerful action of centrifugal force, particles with different sizes will be with the radially generation centrifugal motion of different speed along revolving body, wherein thicker particle has bigger centrifugal motion speed, leaving stoste easily enters in the mother liquor, when arriving the outlet in classification territory, subparticle can form the distribution of a rule in mother liquor and stoste, and wherein thicker distribution of particles is in the side away from gyroaxis; And thinner particle will be distributed in the side near gyroaxis; Outlet in the classification territory, by following division board 8 the classification territory is divided into fine grained liquid branch basin and coarse granule liquid branch basin, contain fine grain liquid and contain coarse grained liquid edge outlet 10,9 outflow graders separately respectively, reach purpose coarse granule and fine grained classification.
Claims (4)
1. a centrifugal grader that is used for the nano-scale particle classification is characterized in that: be made up of feed arrangement, buncher and grader body; Feed arrangement comprises stoste solution feed pump and mother liquor solution feed pump; Grader body center is gyroaxis and is connected with buncher by shaft joint; Be fixed with concentric inner sleeve and outer sleeve on the gyroaxis, be provided with division board and following division board on the annular that is fixed on the gyroaxis in the middle of inner sleeve and the outer sleeve; The gyroaxis inside top is fixed with distance sleeve, by being connected of distance sleeve and last division board stoste supply port and mother liquor supply port being separated; Between inner sleeve and following division board, be provided with fine grained liquid outlet, between outer sleeve and following division board, be provided with coarse granule liquid outlet; The end face bearing of grader body by being positioned at the gyroaxis bottom is as support.
2. the centrifugal grader that is used for the nano-scale particle classification according to claim 1 is characterized in that: the power of buncher is 2～5kw, and speed adjustable range is 200～5000 rev/mins.
3. the centrifugal grader that is used for the nano-scale particle classification according to claim 1 is characterized in that: the gyroaxis of grader body, inner sleeve, outer sleeve, last division board, following division board, distance sleeve all adopt the stainless steel manufacturing.
4. the centrifugal grader that is used for the nano-scale particle classification according to claim 1 is characterized in that: the fixed form of inner and outer sleeves and upper and lower division board and distance sleeve and gyroaxis is welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620151464 CN200974043Y (en) | 2006-11-23 | 2006-11-23 | Centrifugal classifier for classifying nanometer-grade grains |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620151464 CN200974043Y (en) | 2006-11-23 | 2006-11-23 | Centrifugal classifier for classifying nanometer-grade grains |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200974043Y true CN200974043Y (en) | 2007-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620151464 Expired - Fee Related CN200974043Y (en) | 2006-11-23 | 2006-11-23 | Centrifugal classifier for classifying nanometer-grade grains |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212488A (en) * | 2013-03-29 | 2013-07-24 | 东南大学 | Centrifugal device for preparing nanofluids and method for preparing nanofluids |
| CN103335444A (en) * | 2013-06-25 | 2013-10-02 | 东南大学 | Nanometer fluid self-dispersion device and lithium bromide absorption refrigeration circulating system |
| CN110624700A (en) * | 2019-09-26 | 2019-12-31 | 湘潭大学 | Centrifugal classifier for gas-solid mixed ultrafine powder |
-
2006
- 2006-11-23 CN CN 200620151464 patent/CN200974043Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212488A (en) * | 2013-03-29 | 2013-07-24 | 东南大学 | Centrifugal device for preparing nanofluids and method for preparing nanofluids |
| CN103335444A (en) * | 2013-06-25 | 2013-10-02 | 东南大学 | Nanometer fluid self-dispersion device and lithium bromide absorption refrigeration circulating system |
| CN103335444B (en) * | 2013-06-25 | 2015-03-18 | 东南大学 | Nanometer fluid self-dispersion device and lithium bromide absorption refrigeration circulating system |
| CN110624700A (en) * | 2019-09-26 | 2019-12-31 | 湘潭大学 | Centrifugal classifier for gas-solid mixed ultrafine powder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071114 Termination date: 20151123 |