CN201389523Y - High-efficiency rotor-type carbon forming powder grader - Google Patents
High-efficiency rotor-type carbon forming powder grader Download PDFInfo
- Publication number
- CN201389523Y CN201389523Y CN200920037474U CN200920037474U CN201389523Y CN 201389523 Y CN201389523 Y CN 201389523Y CN 200920037474 U CN200920037474 U CN 200920037474U CN 200920037474 U CN200920037474 U CN 200920037474U CN 201389523 Y CN201389523 Y CN 201389523Y
- Authority
- CN
- China
- Prior art keywords
- separator
- rotor
- carbon element
- element shaping
- main
- 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.)
- Expired - Fee Related
Links
- 239000000843 powder Substances 0.000 title claims abstract description 45
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 22
- 235000012054 meals Nutrition 0.000 claims description 25
- 238000007493 shaping process Methods 0.000 claims description 20
- 230000003068 static effect Effects 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 239000003245 coal Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 7
- 239000008187 granular material Substances 0.000 description 5
- 239000011324 bead Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Images
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The utility model aims at providing a high-efficiency rotor-type carbon forming powder grader, which comprises an outer cone (9), wherein the lower end of the outer cone (9) is provided with an air inlet pipe (11) and a rough powder outlet (12). The grader is characterized in that a powder channel is formed between the outer cone (9) and a main grading chamber (5); a primary separator (10), a second-stage separator (8) and a third-stage separator (4) are fixedly connected in the powder channel from bottom to top; the upper end of the main grading chamber (5) is provided with an electric motor (1); and the electric motor (1) can drive the third-stage separator (4) by a main shaft. The grader replaces the traditional rough powder separator, namely, the multi-stage separation technology is adopted to improve the grading property of the equipment, thereby increasing the system throughput, improving the percent of pass of the product, lowering the energy consumption in production and reducing the investment.
Description
Technical field
The utility model belongs to a kind of grader, especially is applied to the carbon element shaping powder grader in the carbon powder preparation field.
Background technology
In the carbon element green anode shaping powder preparation of aluminum electrolysis industry, its main production equipments has ball mill, mill separator, pulverized-coal collector, dust-precipitator etc., production technology adopts " circle stream " grinding process mostly, and wherein the performance of mill separator is to influence that system exerts oneself and the key equipment of unit product power consumption.
Mill separator is as early stage thick, the fine powder classifying equipoment that uses, because the restriction of its structure and classification principle exists grinding efficiency low, fineness is regulated shortcomings such as inconvenience.The structural representation of existing pulverized coal preparation system mill separator as shown in Figure 1, comprise upper shell 2, Outer Taper 5, inner cone 4, the passage top deep bead 3 that aperture can be regulated that is being uniformly distributed along the circumference between inner cone 4, Outer Taper 5 and the upper shell 2, Outer Taper 5 lower ends are provided with blast pipe 6 and meal outlet 7, Outer Taper 5 upper ends are provided with discharge pipe 1, and its operation principle is as follows:
Dusty gas enters mill separator by blast pipe 6 in the grinding machine discharge pipe, because of the overflow section area increases, the air-flow rate of climb reduces the collision that reaches with inner cone 4 lower ends, and the sedimentation under the gravity effect of some bulky grains is glided along Outer Taper 5 inwalls, and meal is got back to again in the grinding machine and ground once more.Air-flow continues to rise, form swirling eddy by deep bead 3, its strength rate of climb also further reduces, at this moment, in the gas phase than coarse granule under the effect of centrifugal force and gravity, the meal that is separated is drawn off by meal outlet 7 along upper shell 2 inwall sedimentations, gets back to again in the grinding machine and grinds once more.Fine grained is then derived by discharge pipe 1 under the air-flow rolling action, is collected as finished product to pulverized-coal collector.
By said structure and operation principle, as can be seen: regulate the angle of deep bead 3, the rotary speed of air-flow changes, and changes the size of particle suffered centrifugal force in rotational flow field, realizes adjusting and control to product fineness.
So, summarize the subject matter that existing mill separator exists on structure and principle the following aspects arranged:
(1) centrifugal force field intensity is low.Mill separator is by regulating the angle of deep bead, form the rotational flow field of centrifugal classification, the suffered centrifugal force of particle that this rotational flow field produces is less, its acentric factor (ratio of same particle suffered centrifugal force and its gravity in rotational flow field) is very low, be generally less than 20, can not realize that material carries out classification under the high efficiency condition.So centrifugal force field intensity is low to be the main cause that influences its classification efficiency and effectiveness of classification.
(2) the living utmost point powder lack of homogeneity of finished product.Because the centrifugal force field intensity that the rotational flow field of mill separator produces is low, effectiveness of classification is poor, and causing the part coarse granule also to be overflowed under the air-flow rolling action becomes finished product, and reflection has higher R200 value on detecting, and gives birth to utmost point powder lack of homogeneity.
(3) fineness control difficulty, insensitive.The fineness of mill separator mainly is to control by the angle of regulating air quantity (generally not changing in the actual production) and guide vane.Handling air quantity one regularly, the change of guide vane angle, centrifugal force field intensity changes thereupon, but amplitude of variation is less, and therefore, the powder stressing conditions in graded region changes also little.So the angle of regulating guide vane is subjected to certain restriction to the amplitude of accommodation of finish fineness.
(4) no secondary sorting is returned in the meal of ball mill and is contained a large amount of qualified finished products.The stepped zone of mill separator is narrow, does not also have secondary sorting structure.When fine grained being collided and the effect of flow perturbation, after material is adherent, just can not in air-flow, be carried once more, but sedimentation sneaks in the meal, and in meal is got back to grinding machine, grinds once more.So we detect in meal contains a large amount of qualified finished products.
In a word, mill separator backward in technique is cause the classification efficiency of mill separator low (about 40%), finished product lack of homogeneity, not high main reason that the ball mill system effectiveness is low, system exerts oneself.
Summary of the invention
The purpose of this utility model is to provide a kind of novel, practical LMTF efficient rotor formula carbon element shaping powder grader to replace traditional mill separator, promptly improve the classification performance of equipment with the technology of multi-stage separation, realize improving system throughput, improve the qualification rate of product, reduce energy consumption, reduce investment.
The utility model is achieved through the following technical solutions:
A kind of efficient rotor formula carbon element shaping powder grader, comprise Outer Taper 9, Outer Taper 9 lower ends are provided with blast pipe 11 and meal outlet 12, it is characterized in that, form the powder passage between Outer Taper 9 and the main grading room 5, primary separator 10, second-stage separator 8, three grades of separators 4 are installed in the described powder passage from bottom to top, and frequency-conversion and speed-regulation motor 1 is equipped with in main grading room 5 upper ends, and motor 1 is by three grades of separators 4 of main shaft drives.
Described primary separator 10 is reflective separator;
Described second-stage separator 8 is made up of the blade rotor of static state, be wrapped in the horn-like vertebra tube that the diameter of series connection increases progressively around the rotor, adjustable shutter is evenly installed along circumference in the top of each awl tube, and series connection awl tube bottom places in the Outer Taper 9, and series connection awl tube upper end places in the main grading room 5;
Described three grades of separators 4 are made up of dynamic blade rotor, rotor adopts the cage rotor structure of back taper, and rotor is installed on the main shaft, and main shaft is driven by frequency-conversion and speed-regulation motor 1, be covered with cage classification circle around the rotor, classification circle surface forms fixing classification face;
Also be connected to conic tube 6 between described Outer Taper 9 and the described main grading room 5, conic tube 6 lower ends link to each other with the upper end of second-stage separator 8, and conic tube 6 upper ends communicate with main grading room 5;
Be provided with the guide vane of helical form formula in the described blast pipe 11;
Described main grading room 5 upper ends are connected to distributor chamber 3.
Technique effect of the present utility model is as follows:
1, centrifugal force field of the present utility model is stable.Adopt centrifugal force field as the main classification field of force, adopt cage classification circle on the structure, classification circle surface forms fixing classification face.Consider the characteristics of interior air motion of grader and distribution, rotor adopts inverted cone-shaped structure, to guarantee the stable of the powder concentrator graded region internal classification field of force.Like this, near diverse location, the random time of same size particles classification face, its stressing conditions is basic identical, and powder concentrator has constant cutting particle diameter d
cThereby, guarantee that it has higher effectiveness of classification.
2, it is convenient that classification force intensity of the present utility model is adjustable, fineness is regulated control.The rotating speed of cage classification circle is consistent with main shaft, and the power of main shaft is provided by variable-frequency motor, adopts Frequency Converter Control, thereby the big I that has guaranteed the classification field of force realizes by the frequency that changes frequency converter.Easy to adjust, flexible, accurate, so this grader has very high classification efficiency and effectiveness of classification.
3, the finished product good uniformity that goes out of the utility model classification.Because its cage rotor has clear and definite classification interface, the centrifugal force field intensity height that rotational flow field produces, the effectiveness of classification height is at finish fineness R
75=25～30%, do not have coarse granule in the fine powder substantially and exist.
4, the qualified finished product content in the meal that goes out of the utility model classification reduces significantly.Because carbon element shaping powder grader has adopted the separating for several times device, under the repeatedly sorting of air-flow, can make the qualified finished product content in the meal reduce the R of its meal significantly
75More than 80%, and its meal of traditional mill separator R
75Generally about 50～55%, this helps reducing the grinding phenomenon, improves the mill efficiency of system.
5, the utility model can satisfy the production requirement of big air quantity.The ball mill system that is furnished with traditional mill separator, because of its separator is insensitive to the control of finish fineness, adjustable range is little, for guaranteeing that finish fineness is qualified, ball mill system not enough usually with air quantity leaves bigger surplus capacity, and this has limited the raising of systematic air flow to a certain extent.Adopt LMTF efficient rotor formula carbon element shaping powder grader, because of it has clear and definite classification interface, to finish fineness control with regulate obviously, can increase the system handles air quantity and guarantee that finish fineness is qualified.Handle the raising of air quantity, the wind speed in the ball mill increases, and operating mode improves in the mill, and its mill efficiency improves, the increase that helps system to exert oneself.
6, classification efficiency of the present utility model is more than 80%, and the pulverized coal fineness index is used the coal pulverizer system that this technology joins traditional mill separator to existing power plant and transformed between 1.2～1.5, and the system that can increase substantially exerts oneself.
Description of drawings
Fig. 1 is the mill separator structural representation of prior art.
Fig. 2 is the structural representation of the utility model embodiment.
The specific embodiment
The utility model is further described with the specific embodiment in conjunction with the accompanying drawings in bottom.
The structure of the utility model embodiment as shown in Figure 2, comprise Outer Taper 9, Outer Taper 9 lower ends are provided with blast pipe 11 and meal outlet 12, form the powder passage between Outer Taper 9 and the main grading room 5, primary separator 10, second-stage separator 8, three grades of separators 4 are installed in the described powder passage from bottom to top, frequency-conversion and speed-regulation motor 1 is equipped with in main grading room 5 upper ends, and motor 1 is by three grades of separators 4 of main shaft drives.
Operation principle of the present utility model is as follows: be provided with three grades of separators 4 in the main grading room 5 of LMTF efficient rotor formula carbon element shaping powder grader, three grades of separators 4 adopt centrifugal force field as the classification field of force, three grades of separators 4 are made up of dynamic blade rotor, rotor adopts the cage rotor structure of back taper, to guarantee the stable of the main grading room 5 internal classification field of forces, be covered with cage classification circle around the rotor, classification circle surface forms fixing classification face.Cage rotor is installed on the main shaft, main shaft is driven by frequency-conversion and speed-regulation motor 1, thereby the intensity that guarantees the classification field of force can be by changing motor 1 rotating speed flexible modulation, to change the stressing conditions of particle in the classification field of force, the cutting particle diameter of control classification, the fineness and the granularmetric composition of three grades of separator 4 adjusting products are keys that product fineness was regulated and controlled to equipment.
Be provided with second-stage separator 8 between the outer centrum 9 of LMTF efficient rotor formula carbon element shaping powder grader and the conic tube 6, second-stage separator 8 is made up of a blade rotor and a slide device of static state, be wrapped in the horn-like vertebra tube that the diameter of series connection increases progressively around the rotor, adjustable shutter is evenly installed along circumference in the top of each awl tube, second-stage separator 8 makes the finished product that is blended in the underproof meal under the effect of secondary grading plant, separates once more.Second separator strengthens the grading effect of powder concentrator, has reduced the fine powder content in the meal that returns ball mill significantly, and helps stablizing the gas flowfield in the main grading room.
Be provided with primary separator 10 in the outer centrum 9 of LMTF efficient rotor formula carbon element shaping powder grader, primary separator 10 is reflective separator, and it makes material collision that high velocity air carries lose kinetic energy and separator goes out thicker granule materials.
Establish spiral helicine guide vane in the blast pipe of LMTF efficient rotor formula carbon element shaping powder grader, make the high velocity air that enters grader produce the rotation field of force.
Process of the present utility model is as follows: the mixed coal powder after the grinding enters LMTF efficient rotor formula carbon element shaping powder grader by blast pipe 11 under strength is carried, because of the overflow section area increases, under the effect of reduction of the air-flow rate of climb and primary separator 10, some larger particles materials are separated, the large granular materials sedimentation is glided along Outer Taper 9 inwalls, promptly underproof meal.Air-flow continue to rise, and is carrying the series connection awl tube bottom of material by second-stage separator 8 and is entering second-stage separator 8, under the effect in the rotation field of force, once more the meal in the mixed material is separated from shutter.Fine powder and a spot of meal continue to rise under the carrying of air-flow, enter main grading room 5; Air-flow in the main grading room produces the strong rotation field of force under the drive of the cage classification circle that rotates at a high speed, the meal that will be in critical value is separated.Meal sinks along the barrel of main grading room 5, during through conic tube 6 and second-stage separator 8, under the air-flow effect of rising, will be mixed in a small amount of fine powder in the meal once more and bring main grading room 5 into and separate.Meal is discharged by meal outlet 12 after the sorting, gets back to ball mill and grinds once more.Qualified fine powder then under the carrying of air-flow, overcomes action of centrifugal force, by cage classification circle interface, enters distributor chamber 3, is discharged by discharge pipe 2 again, after pulverized-coal collector or bag filter are collected, enters finished bin and stores.
Claims (8)
1, a kind of efficient rotor formula carbon element shaping powder grader, comprise Outer Taper (9), Outer Taper (9) lower end is provided with blast pipe (11) and meal outlet (12), it is characterized in that, form the powder passage between Outer Taper (9) and the main grading room (5), be fixedly connected from bottom to top in the described powder passage primary separator (10), second-stage separator (8), three grades of separators (4), motor (1) is equipped with in main grading room (5) upper end, and motor (1) is by three grades of separators of main shaft drives (4).
2, efficient rotor formula carbon element shaping powder grader according to claim 1 is characterized in that described primary separator (10) is reflective separator.
3, efficient rotor formula carbon element shaping powder grader according to claim 2 is characterized in that, confinement tube (7) is equipped with in described primary separator (10) upper end.
4, efficient rotor formula carbon element shaping powder grader according to claim 2, it is characterized in that, described second-stage separator (8) is made up of the blade rotor of static state, be wrapped in horn-like awl that the diameter of series connection increases progressively tin around the blade rotor, shutter is evenly installed along circumference in the top of each awl tube, series connection awl tube lower end places in the Outer Taper (9), and series connection awl tube upper end places in the main grading room (5).
5, according to claim 2 or 4 described efficient rotor formula carbon element shaping powder graders, it is characterized in that, described three grades of separators (4) are made up of dynamic blade rotor, rotor adopts the back taper cage construction, rotor is installed on the main shaft, and main shaft is driven by motor (1), and motor (1) is a variable-frequency motor, be covered with cage classification circle around the back taper rotor, classification circle surface forms fixing classification face.
6, efficient rotor formula carbon element shaping powder grader according to claim 5, it is characterized in that, also be connected to conic tube (6) between described Outer Taper (9) and the described main grading room (5), conic tube (6) lower end links to each other with the upper end of second-stage separator (8), and conic tube (6) upper end communicates with main grading room (5).
7, efficient rotor formula carbon element shaping powder grader according to claim 6 is characterized in that, is provided with the guide vane of helical form formula in the described blast pipe (11).
8, efficient rotor formula carbon element shaping powder grader according to claim 6 is characterized in that, described main grading room (5) upper end is connected to distributor chamber (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920037474U CN201389523Y (en) | 2009-02-13 | 2009-02-13 | High-efficiency rotor-type carbon forming powder grader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920037474U CN201389523Y (en) | 2009-02-13 | 2009-02-13 | High-efficiency rotor-type carbon forming powder grader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201389523Y true CN201389523Y (en) | 2010-01-27 |
Family
ID=41596342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920037474U Expired - Fee Related CN201389523Y (en) | 2009-02-13 | 2009-02-13 | High-efficiency rotor-type carbon forming powder grader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201389523Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909178A (en) * | 2012-11-14 | 2013-02-06 | 张家港市兰航机械有限公司 | Dust separator |
| CN104438087A (en) * | 2014-12-25 | 2015-03-25 | 中国华电集团科学技术研究总院有限公司 | Axially and radially combined type tailing separator |
| CN106670107A (en) * | 2016-12-16 | 2017-05-17 | 陆高尚 | Impurity removal box for feed raw materials |
-
2009
- 2009-02-13 CN CN200920037474U patent/CN201389523Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909178A (en) * | 2012-11-14 | 2013-02-06 | 张家港市兰航机械有限公司 | Dust separator |
| CN104438087A (en) * | 2014-12-25 | 2015-03-25 | 中国华电集团科学技术研究总院有限公司 | Axially and radially combined type tailing separator |
| CN106670107A (en) * | 2016-12-16 | 2017-05-17 | 陆高尚 | Impurity removal box for feed raw materials |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202052701U (en) | Powder concentrator capable of sorting out component materials having particles of rough, medium, and fine particle sizes | |
| CN103537355B (en) | System and method for preparing ultrafine pulverized coal | |
| CN201357145Y (en) | Efficient rotor type metal mineral powder choosing machine | |
| CN104984911B (en) | A kind of rotor type powder sorter | |
| CN209109277U (en) | A kind of pre-separation bypass wind roller type vertical mill | |
| CN202387599U (en) | Vortex combined powder separator | |
| CN203842821U (en) | Particle-grading powder separator | |
| WO2020048279A1 (en) | Multi-rotor dynamic powder sorting machine, powder sorting method and roller press final powder grinding system | |
| CN101972687A (en) | Preparation process of carbon molding powder | |
| CN203778347U (en) | Pneumatic sand screening and powder removing equipment in manual mechanical sand-making | |
| CN209501889U (en) | A kind of fluidized bed air flow crusher of controllable granularity | |
| CN204933651U (en) | Novel vertical mill device | |
| CN202270652U (en) | Powder concentrator for powdery material classification | |
| CN201389523Y (en) | High-efficiency rotor-type carbon forming powder grader | |
| CN203917150U (en) | Novel pair of transmission environment protection energy-saving efficient separator | |
| CN201357144Y (en) | Combined type efficient rotor power-choosing machine for desulfurizing and pulverizing | |
| CN201684726U (en) | Compelling airflow turbo classifier | |
| CN202238670U (en) | Dynamic combined type coarse powder separator | |
| CN205164910U (en) | Material collecting device in system of smashing | |
| CN106466653B (en) | Novel vertical mill device | |
| CN208928578U (en) | A kind of multistage is broken up in electrostatic and powder selection device | |
| CN203235574U (en) | Rotational flow device | |
| CN206881950U (en) | A kind of energy-saving air flow classifying equipoment | |
| CN106064150A (en) | A rotary fly ash special classifier | |
| CN209663421U (en) | A kind of negative pressure grinding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100127 Termination date: 20130213 |