CN102580924A - Countercurrent classifier - Google Patents
Countercurrent classifier Download PDFInfo
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- CN102580924A CN102580924A CN2012100489625A CN201210048962A CN102580924A CN 102580924 A CN102580924 A CN 102580924A CN 2012100489625 A CN2012100489625 A CN 2012100489625A CN 201210048962 A CN201210048962 A CN 201210048962A CN 102580924 A CN102580924 A CN 102580924A
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- classifier
- countercurrent
- grading wheel
- labyrinth ring
- sizer
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Abstract
The invention discloses a countercurrent classifier, belonging to the technical field of a classifier. The countercurrent classifier comprises a classifier body, wherein a classifying wheel driven by a power device is arranged on the classifier body and is positioned in the classifier body. A whirlwind feeding cover is arranged on the classifier body, a feeding port is arranged on the whirlwind feeding cover, and the feeding port is arranged along the tangential direction of the classifier body and is positioned at the classifying wheel. The countercurrent classifier solves the technical problems of low classifying precision, low fine powder extraction rate and wide particle size distribution of finished products of viscous materials and materials of D97 being at most 2mum. The countercurrent classifier is widely applied to fine classification of solid particles.
Description
Technical field
The present invention relates to a kind of pressed powder grading plant, relate in particular to a kind of countercurrent sizer.
Background technology
Traditional dry type gas flow sizing machine is made up of motor, grading wheel, body etc., and it is through the rotating speed of regulating grading wheel and is equipped with the reasonable secondary air intake and realizes the effective classification to material.But there are shortcomings such as treating capacity is little, effectiveness of classification is low, the fine powder recovery rate is low, bulky grain control is not strict in traditional gas flow sizing machine, causes difficulty thereby make businessman to micro mist.
At present both at home and abroad dry classification is commonly used has two kinds in horizontal grader and vertical split pole machine; Generally all there are defectives such as effectiveness of classification is low, the fine powder recovery rate is low, the finished product size distribution is wide in tradition horizontal grader and vertical classification, and both effects when handling viscous material and D97≤2um material are especially not good.
Summary of the invention
Technical problem to be solved by this invention is: a kind of countercurrent sizer is provided, to solve viscous material and technical problem that D97≤2um stock grading precision is low, the fine powder recovery rate is low, the finished product size distribution is wide.
For solving the problems of the technologies described above; Technical scheme of the present invention is: countercurrent sizer, comprise body, and said body is provided with the grading wheel that is driven by power set; Said grading wheel is positioned at said body; Said body is provided with whirlwind charging cover, and said whirlwind charging cover is provided with charging aperture, and said charging aperture is provided with along the tangential of said body and is positioned at said grading wheel position.
As a kind of improvement; Be provided with first labyrinth ring and second labyrinth ring that cooperatively interact between said grading wheel and the body; Said first labyrinth ring is fixedly installed on the said body and said first labyrinth ring is provided with annular groove, and said second labyrinth ring is fixedly installed on the said grading wheel and said second labyrinth ring is provided with annular ridge; Said body is provided with inlet channel, and said inlet channel is communicated with said annular groove.
As further improvement; Said body is provided with the secondary air device; Said secondary air device comprises the orifice plate that is fixedly installed on the body; The outside of said orifice plate is provided with cover plate, and said cover plate is provided with and the corresponding through hole in the hole site of said orifice plate, and said cover plate is connected through securing member with orifice plate.
As further improvement, said body is provided with inspection door, and the position of said inspection door and charging aperture is relative.
As further improvement, the blade surface of said grading wheel is provided with carburized layer.
Adopted technique scheme, the invention has the beneficial effects as follows: because body is provided with the whirlwind charging cover that has charging aperture, and charging aperture is provided with along the tangential of body and is positioned at the grading wheel position; Material gets into classification inside through tangential direction; At first quicken, break up through the grading wheel of rotation at a high speed again, material is better disperseed through air-flow; Effectiveness of classification and fine powder recovery rate have been improved, especially the material of calculated viscosity material and D97≤2um.
Owing to be provided with first labyrinth ring and second labyrinth ring that cooperatively interacts between grading wheel and the body; Adopt the labyrinth seal mode between first labyrinth ring and second labyrinth ring; And designed inlet channel and be communicated with the annular groove on first labyrinth ring, made under the grading room suction function, just can produce the natural wind that flows by in the export-oriented grading room of body in the inlet channel; Both stop bulky grain and got into grading room; Control bulky grain effectively, realized self-priming hermetic seal again, solved the movable sealing problem of grading wheel and body.
Because body is provided with the secondary air device, through rotating the angle between adjustment cover plate and the orifice plate, the hole that can cover or open varying number; Obtain different intakes; And this air intake adopts natural wind fully, is different from traditional power air intake, has reduced energy resource consumption.
Because the blade surface of grading wheel is provided with carburized layer, has improved the hardness and the rigidity of blade, blade is indeformable when having guaranteed the high rotating speed of grading wheel, has prolonged the service life of grading wheel.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the enlarged drawing of A-A among Fig. 1;
Fig. 3 is the partial enlarged drawing of B portion among Fig. 1;
Fig. 4 is the partial enlarged drawing of C portion among Fig. 1;
Among the figure: 1, variable-frequency motor, 2, body, 3, grading wheel, 4, discharging opening, 5, whirlwind charging cover; 6, charging aperture, 7, the secondary air device, 8, star-like discharge valve, 9, first labyrinth ring, 10, second labyrinth ring; 11, inlet channel, 12, holding screw, 13, orifice plate, 14, cover plate.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Shown in Fig. 1 and Fig. 2 were common, a kind of countercurrent sizer comprised body 2; Said body 2 is provided with the grading wheel 3 that is driven by power set, and said power set are preferably variable-frequency motor 1, and said grading wheel 3 is positioned at said body 2; The blade surface of said grading wheel 3 is provided with carburized layer, has improved the hardness and the rigidity of blade, and blade is indeformable when having guaranteed the high rotating speed of grading wheel 3; Prolonged the service life of grading wheel 3, said body 2 is provided with whirlwind charging cover 5, and said whirlwind charging cover 5 is provided with charging aperture 6; The tangential of the said body 2 in said charging aperture 6 edges is provided with and is positioned at said grading wheel 3 positions, and said body 2 is provided with inspection door, and the position of said inspection door and charging aperture 6 is relative; Can open inspection door fast and observe the abrasion condition of grading wheel 3, perhaps change other accessory.
Shown in Fig. 1 and Fig. 3 are common; Be provided with first labyrinth ring 9 and second labyrinth ring 10 that cooperatively interact between said grading wheel 3 and the body 2; Said first labyrinth ring 9 is fixedly installed on the said body 2 and said first labyrinth ring 9 is provided with annular groove, and said second labyrinth ring 10 is fixedly installed on the said grading wheel 3 and said second labyrinth ring 10 is provided with annular ridge; Said body 2 is provided with inlet channel 11; Said inlet channel 11 is communicated with said annular groove, under the grading room suction function, just can produce the natural wind that flows by in the body 2 export-oriented grading rooms in the inlet channel 11; Both stop bulky grain and got into grading room; Controlled bulky grain effectively, realized self-priming hermetic seal again, solved the movable sealing problem of grading wheel 3 with body 2.Shown in Fig. 1 and Fig. 4 were common, said body 2 was provided with secondary air device 7, and said secondary air device 7 comprises the orifice plate 13 that is fixedly installed on the body 2; The outside of said orifice plate 13 is provided with cover plate 14; Said cover plate 14 is provided with and the corresponding through hole in the hole site of said orifice plate 13, and said cover plate 14 and orifice plate 13 are connected through securing member, usually; Securing member is preferably holding screw 12; Through rotating the angle between adjustment cover plate 14 and the orifice plate 13, the hole that can cover or open varying number obtains different intakes.
Its course of work is following:
As shown in Figure 1, material gets into classification inside by charging aperture 6 through tangential direction, at first quickens through air-flow; Break up through the grading wheel 3 of rotation at a high speed again, fall then, under the effect of secondary air device 7 ascending airs; In graded region, form clear and definite material diversion layer, variable-frequency motor 1 drives grading wheel 3 and rotates, and the powder of the qualified fineness that meets the classification requirement is discharged through discharging opening 4; Fine powder gets into cyclone collector, and a small amount of micro mist gets into sack cleaner and captures, and purified gas is discharged by air-introduced machine; Meal is fallen the bottom along the inwall of body 2 and is collected because gravity sends back to grading room once more with other impact energy effects, is discharged by star-like discharge valve 8.
The present invention is the material of calculated viscosity material and D97≤2um especially.
The present invention is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done all drop within protection scope of the present invention.
Claims (5)
1. countercurrent sizer; Comprise body, said body is provided with the grading wheel that is driven by power set, and said grading wheel is positioned at said body; It is characterized in that; Said body is provided with whirlwind charging cover, and said whirlwind charging cover is provided with charging aperture, and said charging aperture is provided with along the tangential of said body and is positioned at said grading wheel position.
2. countercurrent sizer as claimed in claim 1; It is characterized in that; Be provided with first labyrinth ring and second labyrinth ring that cooperatively interact between said grading wheel and the body; Said first labyrinth ring is fixedly installed on the said body and said first labyrinth ring is provided with annular groove, and said second labyrinth ring is fixedly installed on the said grading wheel and said second labyrinth ring is provided with annular ridge; Said body is provided with inlet channel, and said inlet channel is communicated with said annular groove.
3. countercurrent sizer as claimed in claim 2; It is characterized in that; Said body is provided with the secondary air device, and said secondary air device comprises the orifice plate that is fixedly installed on the body, and the outside of said orifice plate is provided with cover plate; Said cover plate is provided with and the corresponding through hole in the hole site of said orifice plate, and said cover plate is connected through securing member with orifice plate.
4. countercurrent sizer as claimed in claim 3 is characterized in that said body is provided with inspection door, and the position of said inspection door and charging aperture is relative.
5. countercurrent sizer as claimed in claim 4 is characterized in that the blade surface of said grading wheel is provided with carburized layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100489625A CN102580924A (en) | 2012-02-28 | 2012-02-28 | Countercurrent classifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100489625A CN102580924A (en) | 2012-02-28 | 2012-02-28 | Countercurrent classifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102580924A true CN102580924A (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100489625A Pending CN102580924A (en) | 2012-02-28 | 2012-02-28 | Countercurrent classifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226591A (en) * | 2013-11-29 | 2014-12-24 | 上海益非亚粉体技术设备有限公司 | Dynamic grader |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2246545Y (en) * | 1995-11-06 | 1997-02-05 | 曹志国 | Horizontal gas-flow fluidizing grinding grading machine |
| CN101053868A (en) * | 2007-04-06 | 2007-10-17 | 江苏智思机械集团有限公司 | Tobacco material wind selection method and device |
| CN201175699Y (en) * | 2008-04-02 | 2009-01-07 | 山东华特磁电科技股份有限公司 | Material sorting device |
| CN201225403Y (en) * | 2008-07-25 | 2009-04-22 | 江苏科行环境工程技术有限公司 | Radial labyrinth seal device of large-scale powder concentrator |
| CN101428278A (en) * | 2007-11-07 | 2009-05-13 | 首钢总公司 | Method for separating zinc-containing substance of blast furnace dry method dust separation ash |
| CN202438466U (en) * | 2012-02-28 | 2012-09-19 | 山东惟远新材料装备有限公司 | Counter-current classifier |
-
2012
- 2012-02-28 CN CN2012100489625A patent/CN102580924A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2246545Y (en) * | 1995-11-06 | 1997-02-05 | 曹志国 | Horizontal gas-flow fluidizing grinding grading machine |
| CN101053868A (en) * | 2007-04-06 | 2007-10-17 | 江苏智思机械集团有限公司 | Tobacco material wind selection method and device |
| CN101428278A (en) * | 2007-11-07 | 2009-05-13 | 首钢总公司 | Method for separating zinc-containing substance of blast furnace dry method dust separation ash |
| CN201175699Y (en) * | 2008-04-02 | 2009-01-07 | 山东华特磁电科技股份有限公司 | Material sorting device |
| CN201225403Y (en) * | 2008-07-25 | 2009-04-22 | 江苏科行环境工程技术有限公司 | Radial labyrinth seal device of large-scale powder concentrator |
| CN202438466U (en) * | 2012-02-28 | 2012-09-19 | 山东惟远新材料装备有限公司 | Counter-current classifier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226591A (en) * | 2013-11-29 | 2014-12-24 | 上海益非亚粉体技术设备有限公司 | Dynamic grader |
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Application publication date: 20120718 |