CN1204983C - High-efficient powder separator - Google Patents
High-efficient powder separator Download PDFInfo
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- CN1204983C CN1204983C CN 02138680 CN02138680A CN1204983C CN 1204983 C CN1204983 C CN 1204983C CN 02138680 CN02138680 CN 02138680 CN 02138680 A CN02138680 A CN 02138680A CN 1204983 C CN1204983 C CN 1204983C
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- powder concentrator
- cage rotor
- separating chamber
- efficient powder
- spreading disk
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Abstract
The present invention relates to a high-efficiency powder sorting machine with high powder sorting efficiency and lower energy consumption, which is mainly used for grading powdery materials in cement industry. The high-efficiency powder sorting machine are provided with two powder sorting chamber which share one grading cage-shaped rotor; a material scattering disc is arranged above the cage-shaped rotor; an air sucking cover, an air sucking pipe, an air sucking pipe and a fine powder airflow outlet are arranged below the cage-shaped rotor; an upper air inlet is arranged on top of a machine body, and a lower air inlet and a coarse powder outlet are combined into a whole. A material is graded from top to bottom and discharged from the bottom as shown in the drawing 1. The machine can reduce the temperature in a mill when used for a cement system, and the machine can reduce water in a mill when used for a raw material system.
Description
Affiliated technical field
The present invention relates to a kind of granular material be carried out the powder selection device of classification by a certain regulation grade to it, particularly be used for the high-efficient powder concentrator of manufacture of cement granular material classification.
Background technology
Powder concentrator was invented so far from 1885, and from the centrifugal powder concentrator of the first generation, the cyclone type powder sorting machine of the second generation develops into the third generation powder concentrator that better performances is representative with O-Sepa.China's application at present rotator type powder concentrator more widely is the transitional product of second generation powder concentrator to the development of third generation powder concentrator, its performance is also between second generation powder concentrator and third generation powder concentrator, because third generation powder concentrator costs an arm and a leg, and is difficult to apply.At present, the classification principle of known rotator type powder concentrator is: material is fallen on the spreading disk through rotor intermediate feed pipe, under action of centrifugal force, radially spread out and be dispersed in the separating chamber, the air-flow that is risen in separating chamber quickens the back and moves to cage rotor, because cage rotor is done rotation at a high speed, when material passes through cage rotor with air-flow, rotate with rotor high-speed again, produced and stoped its centrifugal force by cage rotor, when having overcome centrifugal force with air-flow, material enters the fines collection device after by cage rotor, when material fails to overcome centrifugal force with air-flow, then be thrown to separating chamber's inwall and enter the meal storehouse by cage rotor.The size of this centrifugal force changes with the cage rotor change in rotational speed, and when air quantity one timing, the cage rotor rotating speed increases, and centrifugal force increases, and the cutting particle diameter of cage rotor reduces, and product attenuates, otherwise rotating speed lowers, the product chap.Because the material that spreads out from spreading disk of this powder concentrator has part also not kick up just to be thrown to the powder concentrator inwall and to enter the meal storehouse, does not participate in classification, causes grinding efficiency not high.In addition, spreading disk and cage rotor run-in synchronism, its rotating speed is decided by product fineness, and this has just caused the actual speed of spreading disk is not the optimum speed of spreading disk spreading, selects the powder potentiality not bring into play.After particularly cement new-standard is implemented, product fineness further reduces, the rotating speed of spreading disk increases substantially, the material of not participating in classification is increased, thereby the powder concentrator grinding efficiency is further reduced, make existing rotator type powder concentrator can not satisfy the needs of present cement classification, and the energy consumption height, cause the operation of cement closed-circuit system uneconomical.
With O-sepa is the third generation powder concentrator of representative, its classification principle is: material is fallen on the spreading disk from feed pipe, radially spread out and bump against on the striker plate, material free-falling after stall on striker plate formation material curtain, enter the annulus of cage rotor outward flange and wind blade inward flange, and then finish and disperse and classification.Though it can be high than the mealiness of selecting of existing rotator type powder concentrator, but also existing problems, existing will 1998 the 2nd phase 16-19 pages or leaves of " cement " magazine " experimental study of spreading plate of swirling classifier " and the relevant data extracts in " turbo air classifier annulus width is to the influence of its graded index " two literary compositions of 2002 the 6th phase 32-35 pages or leaves of " cement " magazine be organized into table 1 and table 2.Spreading disk spreading performance quality is bigger to the influence of meal productive rate as can be seen from Table 1, be up to 9.32 percentage points, and the annulus width is less to the influence of meal productive rate, 5.75 percentage points of great talents, this just discloses O-sepa powder concentrator classification field and has deficiency, and it can't be separated material by the particle diameter of a certain regulation well.Trace it to its cause: because coarse grained volume is bigger in the air-flow, it is fine grain several times, ten thousand times, even more than 1,000,000 times, be specially the cube of the ratio of both particle diameters, and coarse granule is in passing the process of annulus, fall with the air-flow rotation on one side, ceaselessly advanced the classification circle to be thrown away again and again by rotating cage again by air-flow on one side, pushing away in the process of getting rid of that this does not stop, coarse granule constantly collides other particle, because of thick, it is very big that the fine grained volume differs, make a lot of fine graineds be attached to its surface and eddy current can't be broken up it, cause meal carrying fine powder secretly and pass annulus that secondary lifting effect is limited in addition, most of fine powder can not be kicked up, make cut diameter d
50Reduce, finally cause having in the meal the qualified fine powder of considerable part.With cement is example, well-known, and active maximum particle diameter only is equivalent to unreactive aggregate greater than the particle of 65 μ m in the cement below 30 μ m, is preferably zero in cement.Table 2 has been listed 63 μ m and the percentage composition of the following particle diameter of 30 μ m in meal, and the classification performance of visible O-sepa third generation powder concentrator is still waiting to improve.
Table 1
| Subjects | Rotating cage rotating speed (r/min) | Import wind speed (m/s) | The highest meal productive rate (%) | Minimum meal productive rate (%) | The difference percentage point |
| Spreading disk | 550 | 20 | 49.71 | 42.17 | 7.54 |
| 700 | 20 | 60.72 | 51.4 | 9.32 | |
| Annulus | 550 | 18 | 77.82 | 74.41 | 3.41 |
| 550 | 20 | 75.46 | 69.71 | 5.75 | |
| 700 | 18 | 82.71 | 80.48 | 2.23 | |
| 700 | 20 | 80.35 | 78.52 | 1.83 |
Table 2
| Subjects | Mixed powder (%) | Meal (%) | ||
| Below the 63 μ m | Below the 30 μ m | Below the 63 μ m | Below the 30 μ m | |
| Spreading disk L-1 | 69.2 | 40.6 | 37.01 | 12.01 |
| Annulus L-1 | 61.04 | 28.76 | 50.36 | 11 |
Summary of the invention
In order to overcome existing rotator type powder concentrator and O-sepa powder concentrator above shortcomings, the invention provides a kind of high-efficient powder concentrator, this high-efficient powder concentrator not only grinding efficiency height, energy consumption is low, and is particularly suitable for the classification of cement.
The technical solution adopted for the present invention to solve the technical problems is: be provided with separating chamber and following separating chamber, and the shared cage rotor in two Room, spreading disk is arranged on the top of cage rotor, both are coaxial, suspended hood, aspiration channel are arranged on the below of cage rotor, one material blocking ring is set between spreading disk and the housing, a plurality of pressure balance pipes are set around housing, the fine powder air stream outlet is arranged on the downside of awl bucket.Stock grading from top to bottom, air-flow is that upper and lower both direction enters, discharge the bottom.
Separating chamber of the present invention is arranged to separating chamber, following separating chamber, is provided with the rounding platform circle that gathers materials between two Room, its effect: gather materials and slow down the material falling speed, prolong material in the grading time of descending separating chamber, make material realize double classification, the grinding efficiency height.
The present invention is provided with at the middle part of Rotary-table cage rotor and breaks up device, makes rotor and breaks up apparatus integration, and the scattering unit of breaing up device can be circular bar shape, square bar shape or sheet.
The present invention is provided with on spreading disk and breaks up device, and its scattering unit can be a circular bar shape, square bar shape or sheet.Its effect is: with spreading disk radially upthrow further break up with the downward material of air-flow, strengthen spreading and break up effect.
The present invention is provided with a plurality of cross sections and is circular or rectangular pressure balance pipe around housing, its effect is: make the blast equilibrium on every side of separating chamber and following separating chamber cage rotor, keep the unanimity of two separating chamber's cut diameters.
The present invention is provided with rounding platform conflux awl in awl bucket, its effect is: the air-flow that balanced air inlet down enters, lead and all press it.
The present invention exports air inlet under the double as with meal, and its effect is: reduce meal temperature and water content.
Fine powder air stream outlet of the present invention is arranged on underpart, and its effect is: reduce working resistance, shorten main axis length, improve the equipment operation stationarity, reduce manufacture difficulty and cost.
The course of work of the present invention: material is fallen on the spreading disk from feed pipe, spreading disk is with material radially behind the upthrow, together downward with the air-flow that enters from the top, after spreading disk is broken up device and is further broken up, enter and select the classification of thick chamber, classification principle is identical with existing rotator type powder concentrator classification principle, fine powder enters cage rotor with air-flow, the material that is thrown away by cage rotor, under the effect of the last separating chamber inwall and the circle that gathers materials, slow down after the gathering, freely fall and enter down separating chamber's classification, its classification principle is similar to the O-sepa powder concentrator, difference is that the O-sepa powder concentrator mainly relies on air-flow that material is further disperseed, and the present invention mainly relies on and breaks up device and break up, and it is big to break up the space, so the material dispersive property is good, the air-flow that air inlet entered under fine powder was accompanyed or follow enters cage rotor, converge with fine powder that enters from last separating chamber and air-flow, discharge from the fine powder air stream outlet through aspiration channel, meal is discharged from the meal outlet after the air intake screening down.Because the separating chamber inner space is big down, the material that is thrown away by rotor is dispersed in the bigger space, and concentration significantly reduces in the unit volume, and the fine particle of dispersion is very easily brought into the classification that the classification circle is participated in a new round again by air-flow.
The invention has the beneficial effects as follows: 1, because the present invention takes spreading disk to place the cage rotor top, discharging opening places the cage rotor below, make material in classification process, gravity is power, system's wind-force is used for the classification of classification circle and uses, so airflow pressure is less relatively, and the rotator type powder concentrator except that classification with the wind, also to rely on wind-force to make the material circulation of rising, the required airflow blast is big, the O-sepa powder concentrator, except that the classification circle with the wind, also utilize the further dispersed material of wind-force, so that raising classification performance, also to utilize wind-force that material is risen, also need big airflow pressure, so energy consumption of the present invention is minimum.2, owing to being provided with two-stage, the present invention breaks up device, make the material of wanting classification all through breaing up device, the first order is broken up its effect of device and is, spreading disk is thrown the material that looses break up, strengthen dispersion effect, guaranteed the performance of last separating chamber classifying capability.The effect that device is broken up in the second level is, to be attached to fine grained on the coarse granule in the classification first time breaks up as much as possible and comes, guarantee the performance of separating chamber's classifying capability down, thereby solved sepa powder concentrator classification field to being attached to the problem of the fine grained dispersibility difference on the coarse granule, improved the classification performance of complete machine.Thereby improved the grinding efficiency under the same circulating load, and then improved the mill efficiency of system, the volume increase consumption reduction.In sum, the technology of the present invention obvious economic.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Accompanying drawing 1 is the embodiments of the invention structural representations.
Accompanying drawing 2 is cage rotor schematic diagrames.
Accompanying drawing 3 is spreading disk schematic diagrames
Among the figure: 1, motor, 2, belt pulley, 3, bearing housing, 4, feed pipe, 5, spreading disk, 6, the pressure balance device, 7, housing, 8, collet, 9, main shaft, 10, velocity hooster, 11, cage rotor, 12, the circle that gathers materials, 13, break up device, 14, large cylinder, 15, aspiration channel, 16, the conflux awl, 17, the awl bucket, 18, the fine powder air stream outlet, 19, the meal outlet is air inlet down, 20, choking coil, 21, suspended hood, 22, following separating chamber, 23, last separating chamber, 24, rod is broken up device, and 25, disc plate, 26, width of cloth bar, 27, retainer ring, 28, annulus, 29, break up bar one, 30, break up bar two, 31, sub-material is broken up bar.
The specific embodiment
In Fig. 1, last separating chamber (23), shared cage rotor (11) of following separating chamber (22), spreading disk (5) is arranged on the top of cage rotor (11), both are coaxial, have between spreading disk (5) and the cage rotor (11) one with the velocity hooster (10) of housing (7) one, suspended hood (21), aspiration channel (15) is arranged on the below of cage rotor (11), between spreading disk (5) and housing (7), a material blocking ring (8) is set, at housing (7) two pressure balance pipes (6) are set on every side, fine powder air stream outlet (18) is arranged on the lower side of awl bucket (17), in suspended hood (21), aspiration channel (15) arranged outside conflux awl (16), meal outlet air inlet (19) down is arranged on the below of boring bucket (17), two last air inlets (not drawing among the figure) are arranged on the body top portion and list in belt pulley (2), bearing housing (3) both sides, motor (1), the import of feed pipe (4) is all at the body top, this embodiment partial data: maximum quantity of wind 20000M
3/ h, 0.08 μ m square hole screen tail over and selected the powder ability less than 2% o'clock is 25t/h, main shaft buncher power 11KW, and body maximum gauge φ 1.8m highly is 5m.
In Fig. 2, break up device (13) and be arranged on cage rotor (11) middle part, by retainer ring (27) with break up bar (29) and form, the quantity of breaing up bar (29) is corresponding with the quantity of the width of cloth bar (26) of cage rotor (11), its ratio is 1: 1,1: 2 or 1: 3, is 1: 2 among the figure
In Fig. 3, sub-material is broken up the upper surface that bar (31) is arranged on spreading disk (5), breaks up the lower surface that bar two (30) is arranged on spreading disk (5), and it is identical with the quantity of breaing up bar two (30) that sub-material is broken up bar (31).
Claims (7)
1, a kind of high-efficient powder concentrator, spreading disk in separating chamber, the cage rotor coaxial arrangement, utilize the cage rotor rotation to produce centrifugal force and carry out the classification of granular material, its feature: separating chamber and following separating chamber are set, the shared cage rotor in two Room, spreading disk is arranged on the cage rotor top, suspended hood, aspiration channel is arranged on the below of cage rotor, one material blocking ring is set between spreading disk and the housing, a plurality of pressure balance pipes are set around the housing, and the fine powder air stream outlet is provided with the downside of awl bucket, stock grading from last and on, on air-flow is, following both direction enters, and discharge the bottom.
2, the high-efficient powder concentrator according to claim 1 is characterized in that: be provided with the rounding platform circle that gathers materials between last separating chamber and following separating chamber.
3, the high-efficient powder concentrator according to claim 1, its feature: cage rotor is a Rotary-table, and its middle part is provided with breaks up device, makes rotor and breaks up apparatus integration, and scattering unit can be made rod or sheet.
4, the high-efficient powder concentrator according to claim 1, it is characterized in that: be provided with on the spreading disk and break up device, its scattering unit can be circular bar shape, square bar shape or sheet.
5, the high-efficient powder concentrator according to claim 1 is characterized in that: be provided with the cross section around the housing and be circular or rectangular pressure balance pipe.
6, the high-efficient powder concentrator according to claim 1 is characterized in that: reverse frustoconic conflux awl is set in cone.
7, the high-efficient powder concentrator according to claim 1 is characterized in that: the meal outlet is united two into one with following air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138680 CN1204983C (en) | 2002-11-24 | 2002-11-24 | High-efficient powder separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138680 CN1204983C (en) | 2002-11-24 | 2002-11-24 | High-efficient powder separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1502419A CN1502419A (en) | 2004-06-09 |
| CN1204983C true CN1204983C (en) | 2005-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02138680 Expired - Fee Related CN1204983C (en) | 2002-11-24 | 2002-11-24 | High-efficient powder separator |
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| Country | Link |
|---|---|
| CN (1) | CN1204983C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100364669C (en) * | 2006-01-24 | 2008-01-30 | 庞德明 | Compound type regrind mill |
| CN102357388A (en) * | 2011-08-04 | 2012-02-22 | 南京工业大学 | Scattering grader |
| CN103341445B (en) * | 2013-06-27 | 2015-07-01 | 山东亿恺仓储工程有限公司 | Rotary type grain separating device |
| CN104043592B (en) * | 2014-06-16 | 2016-07-06 | 绵阳蓝奥重型机械制造有限公司 | Novel pair of transmission environment protection energy-saving efficient separator |
| CN104588320A (en) * | 2015-01-29 | 2015-05-06 | 盐城市富仕环保科技有限公司 | Material scattering device |
| CN105170463B (en) * | 2015-10-27 | 2017-08-01 | 唐山博全实业有限公司 | A kind of mine powder concentrator |
| CN109158316B (en) * | 2018-09-07 | 2024-04-23 | 天津水泥工业设计研究院有限公司 | Compact combined powder concentrator for material bed grinding system |
| CN110090719B (en) * | 2019-06-11 | 2024-06-04 | 宜宾市天顺建材集团股份有限公司 | Particle size grading device and system |
| CN110355101A (en) * | 2019-07-18 | 2019-10-22 | 江苏安达环保科技有限公司 | A kind of modified Combined powder concentrator |
| CN112934094B (en) * | 2021-02-19 | 2021-09-03 | 山东御馨生物科技有限公司 | Full-automatic multichannel measurement powder dispersion hybrid system |
| CN115739628A (en) * | 2022-11-17 | 2023-03-07 | 成都利君实业股份有限公司 | Horizontal vortex three-separation powder separator |
-
2002
- 2002-11-24 CN CN 02138680 patent/CN1204983C/en not_active Expired - Fee Related
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| CN1502419A (en) | 2004-06-09 |
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