CN1803318B - Super fine powder classifier - Google Patents
Super fine powder classifier Download PDFInfo
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- CN1803318B CN1803318B CN 200610010649 CN200610010649A CN1803318B CN 1803318 B CN1803318 B CN 1803318B CN 200610010649 CN200610010649 CN 200610010649 CN 200610010649 A CN200610010649 A CN 200610010649A CN 1803318 B CN1803318 B CN 1803318B
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- impeller
- cage
- classification
- draught fan
- fan impeller
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Abstract
The invention discloses an ultrafine powder grading machine, which is characterized by the following: setting the volute cyclone lid on the top of case with fan impeller in the lid; fixing the grading cage under the impeller with the same axle; connecting the material-spreading wave wheel under the cage to rotate together; introducing the feed pipe on the material-spreading wave wheel in the case; connecting the outlet of volute cyclone lid with the dust collector; making the shape of material-spreading wave wheel similar to washing machine wave wheel with inclined angle between the blade and level face; connecting the triplet negative pressure closed-circuit between lid and case; entering the standard particle into the inlet of fan impeller through grading cage gate or gap; conveying from outlet of lid to next grading equipment; grading the large particle through grinding from the outlet of cone bottom.
Description
Technical field the invention belongs to a kind of super fine powder classifier.
" ultra-fine grinding equipment and application thereof " book that background technology metallurgical industry publishing house publishes in January, 2005, the 153-157 page or leaf has been introduced the super-fine classified technology and equipment of blade swinging.Such grader is to produce blast (malleation blowing or negative pressure air draught) with blower fan or rotary blade to disperse powder material to be fractionated, and powder particle flows to collecting chamber and obtains graded product with the impeller blade gap that certain flow velocity passes through rotation under the drive of air-flow.The linear velocity and the quilt of rotary blade keep off the particle that granularity that is flowing simultaneously or density are big, bullet because flow velocity is lower than, and return the grading room regrinding and reconcentration.This class classifier rotor blade is little and even at interval, the wheel speed height, and the classification of material particle is thinner, makes partition size higher.Problem is because rotary blade adopts blade to make rotor, all can produce original year powder air-flow acceleration (speedup or deceleration) during rotation with the difference of angular dimension, blade dimensions, rotating speed, make that the powder particle at stream nearly impeller edge should lag behind be accelerated to surmount penetrates the fine powder district, cause the broadening of powder group size distribution, reduced the classification quality, make on the contrary to have met the requirements of particle and blown again and keep off back grading room, cause tired the branch, efficient reduces.
Summary of the invention the purpose of this invention is to provide a kind of super fine powder classifier, and it has higher effectiveness of classification and super-fine classified characteristics, efficient height, low in energy consumption, and noise is little, and powder granularity is evenly distributed.
This super fine powder classifier that the present invention proposes, it has casing, the awl end, spiral case whirlwind cover, it is characterized in that the spiral case whirlwind covers on the upper end of casing, in the whirlwind cover draught fan impeller is housed, there is the classification cage of concentric shafts the impeller below, the cage below is connected to the spreading impeller and rotates therewith, and feed pipe is introduced spreading impeller top in the casing, and spiral case whirlwind cover air outlet receives dirt equipment.
The spreading impeller is similar to agitation wheel for washing machine, between its blade and horizontal plane the inclination angle is arranged.
It is closed circuit to connect a threeway formation negative pressure between spiral case whirlwind cover and casing, avoids airborne dust.
The draught fan impeller axle is a hollow shaft, the middle part has the concentric shafts of classification cage to pass, be enclosed within on the classification cage main shaft, the diaxon axial line overlaps, and classification cage main shaft two ends are stretched out and are exposed at draught fan impeller axle outside, and the upper end is directly driven by vertical machine, the lower end extends below the draught fan impeller air inlet and classification is housed, rotation under vertical machine drives has belt pulley on the draught fan impeller axle, by the blower motor driven rotary.
The blower fan axle is fixed on upper and lower two and controls on the bearing and rotate.
The blade of draught fan impeller has two groups of linear leaf and short blades, alternate configuration, linear leaf rises from impeller sleeve for approximate S shape, terminates in periphery, short blade is approximate half S shape, arise from the imaginary circle place between axle sleeve and the periphery, terminate in periphery, long and short blade all is fixed on the last side board and following side board of impeller, linear leaf also is fixed on the axle sleeve simultaneously, and last side board and axle sleeve link fixing.
The classification cage is the cage of an inversed taper platform shape, and the cage wall is surrounded by reinforcing bar, " V " type bar or net grid, and there is rib the inside and outside both sides of net grid, the most advanced and sophisticated direction of pointing to rotation of " V " type bar.The rotating speed of classification cage is regulated by the upright stepless speed-regulating motor that drives it.
The helix structure of spiral case whirlwind cover for gradually opening, its outlet is connected with dust-precipitator or other classifying equipoments.
The course of work of the present invention is: when material to be fractionated is guided on the spreading impeller from feed pipe, the impeller blade that is rotated is broken up, disperse is in casing, under the draught fan impeller swabbing action, rise, the particle that meets granularity requirements passes classification cage net grid or the cage interspace enters the draught fan impeller air inlet, radially throw away from impeller, export out from spiral case whirlwind clamshell and enter dust-precipitator or next classifying equipoment, greater than the particle that requires then sedimentation fall, export out from awl end coarse fodder and guide to the grinding machine classification again of regrinding.
Characteristics of the present invention are classification cage design cleverly, conical surface wall is the cage of net grid, the twine that the longitude and latitude both direction is arranged, stopped for dividing in the material particle greater than granularity requirements to play effectively, only allowing to meet the requirements of particle passes and enters fine particle stage material, the analysis rate of gas solid separation and dialysance are apparently higher than traditional grader when rotating at a high speed, and the effectiveness of classification height can obtain special thin superfine powder material.It is zero that the air-flow acceleration that produces during the rotation of steel reinforcement cage bar is made a concerted effort, and has guaranteed that dust-loaded air velocity is constant relatively, and grading effect is good, the precision height, and in the intensity allowed band, the cage bar is thin more good more." V " type cage bar both sides are less to the disturbance of air-flow, also can produce compared to prior art better effect.Concentric draught fan impeller and the design of classification cage of diaxon is another characteristics of the present invention in addition, it makes the structure of classifying equipoment tightly play, high efficiency, noise are little, make up the technique effect of back generation except that efficient with the classification cage, gained graded product even particle size distribution can satisfy the special requirement in many new high-tech materials field.
Appended drawings 1 is front view of the present invention (broken section).
Accompanying drawing 2 is vertical views of the present invention.
Accompanying drawing 3 is draught fan impeller axle and classification cage axle combining structure front view (broken section).
Accompanying drawing 4 is draught fan impeller front view (broken sections).
Accompanying drawing 5 is draught fan impeller A-A profiles.
Accompanying drawing 6 is classification cage and spreading impeller disjunctor front view.
Accompanying drawing 7 is B-B profiles.
Accompanying drawing 8 is classification cages and removes material impeller disjunctor vertical view.
Accompanying drawing 9 is classification cage sidewall sectional drawings (part) when being the net grid.
Accompanying drawing 10 is classification cage sidewall sectional drawings (part) when being circular reinforcing bar.
Accompanying drawing 11 is classification cage sidewall sectional drawings (part) when being the V-type bar.
Among the accompanying drawing 1-11, each parts label is as follows:
The outlet of 1-coarse fodder; 2-bores the end; The 3-casing; 4-removes the material impeller; The 5-blower motor; 6-classification cage; Control the bearing fixing spoke under the 7-blower fan main shaft; 8-blower fan belt; 9-classification cage motor; 10-blower fan belt pulley; The 11-feed pipe; The 12-draught fan impeller; 13-spiral case whirlwind cover; The 14-groove that connects material; 15-classification cage main shaft; Control bearing on the 16-classification cage; 17-classification cage motor cabinet; 18-blower fan Pulley shaft is controlled bearing; 19-blower fan main shaft shaft coupling; 20-blower fan load-bearing bearing; 21-blower fan main shaft bearing block; The 22-blower fan main shaft; Control bearing on the 23-blower fan main shaft; Control bearing under the 24-blower fan main shaft; Control bearing under the 25-classification cage; 26-classification cage hold-down nut; The 27-impeller sleeve; Side board under the 28-impeller; Side board on the 29-impeller; The 30-linear leaf; The 31-short blade.
The specific embodiment is shown in Fig. 1-11. and casing 3 is a cylinder, identical or approximate with the casing of common vertical grinder, the awl end 3 is a back taper bucket, vertex (vertices) has coarse fodder outlet 1, connecing grinding machine or other classifying equipoments. casing is suitable for reading to connect a snail shell coiling cover 13, the outlet of cover is connected with fines dust-precipitator or other classifying equipoments. be installed in draught fan impeller 12 shapes in the whirlwind cover shown in Fig. 4-5. and its linear leaf 30 is to be similar to serpentine, one end is weldingly fixed on the impeller sleeve 27, both sides are fixed on the impeller on side board 29 and the following side board 28. and short blade 31 is that half is similar to serpentine, both sides are separately fixed on the impeller, on the following side board, the two ends freedom, last side board complete closed, following side board has a circular air inlet. and a block length blade is evenly distributed at interval with continuous two short blades for this example. can also determine long according to actual needs, the spread pattern of short blade, join block length blade or the like as the one or a few blocks short blade. during installation, last side board one faces up, following side board one faces down, horizontal positioned, being fixed on the blower fan main shaft 22. blower fan main shaft is again by controlling bearing 23 on the blower fan main shaft that is fixed on the spiral case whirlwind cover and controlling bearing 24 supportings down and rotate. control the fixed form of bearing for to be welded on the whirlwind cover wall down with three to five fixed spoke 7, and on control bearing and be fixed on the whirlwind cover top by blower fan main shaft bearing block 21. blower fan main shaft is driven by blower motor 8 by the blower fan belt pulley 10 of its upper end. classification cage 6 and with the shape of the spreading impeller 4 of its disjunctor and structure as mentioned above, it is directly installed on the classification cage main shaft 15 of draught fan impeller air inlet below, there are a hold-down nut 26. classification cage main shafts directly to drive bottom by the stepless speed-change motor 9 of its upper end. because draught fan impeller all is to be hung on its vertical main shaft with the classification cage, their weight and movement load carry by controlling bearing 16 on the blower fan load-bearing bearing 20 of conical roller and the classification cage respectively, with guarantee motion steadily and reliable.
Adorn unillustrated three-way piece among the figure between casing and whirlwind cover, suitable for reading and end opening divides spiral case to connect whirlwind cover and casing, and it is closed circuit that the side mouth is connected to this machine inner chamber formation negative pressure with pipeline and gate valve, to regulate blast, avoids airborne dust.
NM parts label as above in this example.
The version of classification cage is the critical component of this machine, and at problems of the prior art, this example has proposed three kinds of versions shown in Fig. 9-11.First kind, classification cage sidewall is the net grid, and there is the strengthening rib strip that pair sky is arranged both sides inside and outside the net grid.Second kind of classification cage sidewall is single circular steel reinforcement cage bar.The third is the V-type bar for classification cage sidewall.First kind of classification cage is ideal, the superfine powder that getable classification is of high quality, and second kind and the third version also can reach purpose of the present invention.
Claims (7)
1. super fine powder classifier, it has casing, the awl end, spiral case whirlwind cover, it is characterized in that the spiral case whirlwind covers on the upper end of casing, in the whirlwind cover draught fan impeller is housed, there is the classification cage of concentric shafts the impeller below, the cage below is connected to the spreading impeller and rotates therewith, and feed pipe is introduced spreading impeller top in the casing, and spiral case whirlwind cover air outlet receives dirt equipment.
2. powder separator according to claim 1 is characterized in that between spreading impeller blade and horizontal plane the inclination angle being arranged.
3. powder separator according to claim 1, it is closed circuit to it is characterized in that can connecing between spiral case whirlwind cover and casing a threeway formation negative pressure, avoids airborne dust.
4. powder separator according to claim 1, it is characterized in that the draught fan impeller axle is a hollow shaft, be enclosed within on the classification cage main shaft, the diaxon axial line overlaps, and classification cage main shaft two ends are stretched out and are exposed at draught fan impeller axle outside, and the upper end is directly driven by vertical machine, the lower end extends below the draught fan impeller air inlet and classification is housed, rotation under vertical machine drives has belt pulley on the draught fan impeller axle, by the blower motor driven rotary.
5. powder separator according to claim 1, the blade that it is characterized in that draught fan impeller has two groups of linear leaf and short blades, alternate configuration, and linear leaf is approximate S shape, rise from impeller sleeve, terminate in periphery, short blade arises from the imaginary circle place between axle sleeve and the periphery for approximate half S shape, terminate in periphery, long and short blade all is fixed on the last side board and following side board of impeller, and linear leaf also is fixed on the axle sleeve simultaneously, and last side board and axle sleeve link fixing.
6. powder separator according to claim 1 is characterized in that the classification cage is the cage of an inversed taper platform shape, and the cage wall is surrounded by reinforcing bar, " V " type bar or net grid, and there is rib the inside and outside both sides of net grid, the most advanced and sophisticated direction of pointing to rotation of " V " type bar.
7. powder separator according to claim 1 is characterized in that the helix structure of spiral case whirlwind cover for gradually opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610010649 CN1803318B (en) | 2006-01-24 | 2006-01-24 | Super fine powder classifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610010649 CN1803318B (en) | 2006-01-24 | 2006-01-24 | Super fine powder classifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1803318A CN1803318A (en) | 2006-07-19 |
| CN1803318B true CN1803318B (en) | 2010-05-12 |
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ID=36865539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610010649 Expired - Fee Related CN1803318B (en) | 2006-01-24 | 2006-01-24 | Super fine powder classifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1803318B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117840041B (en) * | 2024-03-07 | 2024-05-03 | 福建美宏科技有限公司 | Special grader for carbon powder |
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2006
- 2006-01-24 CN CN 200610010649 patent/CN1803318B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1803318A (en) | 2006-07-19 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20100512 Termination date: 20120124 |