CN101164707A - Classifying system for airflow mill - Google Patents
Classifying system for airflow mill Download PDFInfo
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- CN101164707A CN101164707A CNA2007100454288A CN200710045428A CN101164707A CN 101164707 A CN101164707 A CN 101164707A CN A2007100454288 A CNA2007100454288 A CN A2007100454288A CN 200710045428 A CN200710045428 A CN 200710045428A CN 101164707 A CN101164707 A CN 101164707A
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- grading wheel
- drive shaft
- main shaft
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Abstract
The present invention relates to a sorting system of pneumatic mill. It includes sorting wheel, transion chamber and drive main shaft system. The sorting wheel is a plate blade sorting wheel made of wear-resistant metal material, on the plate blade sorting wheel 40-100 slotted eyes are uniformly distributed; the lower end of said transion chamber is connected with plate sorting wheel, its upper end is fixedly connected with drive main shaft, the middle of upper end surface has a projection for preventing material from piling up; the drive main shaft system has a cleaning dust-proofing device, in the cleaning dust-proofing device, between the drive main shaft and mill chamber they are sealed by using screw-seal and gas seal combination, drive main shaft material outlet cleaning is sealed by using labyrinth disk seal and the bearing is sealed by using rotating shaft combination seal. Said invention also provides the working principle of said sorting system and its concrete operation method.
Description
Technical field
The present invention relates to a kind of rotation hierarchy system of gas classification device, especially a kind of operation with closed ring collision type fluidized bed jet mill powder is plate blade formula hierarchy system radially.
Background technology
In the prior art, various grading wheel patents (as: patent No. 89102002 gas flow sizing machines, patent No. CN200420078321.5 micronizer grading wheel assembly, the patent No. 2004201083338 powder nanometer axial flow ends are to vane type grading wheel etc.), all adopt mill chamber interior cleaning disc, the axially staged wheel (Fig. 1,2) structure.
At present, adopting operation with closed ring collision type fluidized bed jet mill (as Fig. 3) both at home and abroad in the powder metallurgy industry is optimal disintegrating apparatus, and it is by source of the gas part 1, former feed bin 2, and host computer system 3, cyclone system 4, dust collecting system 5, air-introduced machine 6, switch board 7 is formed.Adopt air compressor compression high purity inert gas, injecting mill body pulverizing district by nozzle with supersonic speed pulverizes, pass through the adjustable speed turbine type grading wheel (structure as shown in Figure 4) of rotation at a high speed then, it comprises grading wheel 10, bearing purgative gas passage 11, drive shaft 12, discharging opening 13 etc., by the control product granularity, pulverized material is a product by the efficient cyclone separator discharging.In airflow milling, use a grading wheel, carry out classification by the particle diameter of reconciling its rotating speed control comminuting matter, the maximum gauge of restriction particle, by the efficient cyclone separator classification, the restriction minimum diameter distributes thereby obtain controlled powder size.Problems such as but in use, have grading wheel cost of manufacture height, installation accuracy requires high, and maintenance is inconvenient, and wear-out part is many, advances coarse granule easily, and fault is many.
Summary of the invention
The present invention solves the classification of fine powder raw material in metallurgy, mine, medicine, food, the chemical field in order to have overcome the defective of above-mentioned existence, and a kind of hierarchy system of airflow milling is provided, and these system's fabrication and installation are easy, and fault is few.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of hierarchy system of airflow milling comprises grading wheel, transition chamber, drive shaft system, is characterized in: grading wheel is the plate blade grading wheel that wear-resisting metal material is made, uniform 40～100 slotted eyes on the disk on the plate blade grading wheel; The Transition Room lower end connects dull and stereotyped grading wheel, fixedlys connected with drive shaft in the upper end; Be provided with the fine powder discharging opening in the drive shaft.
Has a boss that prevents buildup in the middle of the upper surface of flat grading wheel; The drive shaft system is provided with the cleaning dust guard, uses helixseal and sealing gland assembly seals between drive shaft and the mill chamber in the cleaning dust guard; Use the labyrinth disc hermetic seal between drive shaft and the purgative gas inlet; Bearing seals with the rotating shaft combination seal.
Plate blade formula hierarchy system of the present invention, adopt the grading wheel of rotation, the classification air is flowed from the blade ecto-entad against centrifugal direction, stop medium to pass through by the runner between the blade, by adjusting the rotating speed of motor shaft, reach the order number of desirable sorting powder micro mist.Have that performance is good, precision is high, grading effect is good, can reach more than the orders up to ten thousand, and is of many uses, can be widely used in the classification of fine powder raw material in metallurgy, mine, medicine, food, the chemical field.
The invention has the beneficial effects as follows:
1. the cost of making grading wheel is low, and the airflow milling that especially is fit to 200 types of current trend is used.Because two kinds of grading wheels adopt different manufacturing process, original relatively grading wheel manufacturing cost will reduce half, and service life is than originally Duoing one times.
2. the requirement of grading wheel installation accuracy is low, and (common this gap requirement reaches 0.15 ~ 0.30mm) with the gap of cleaning flange need not measure grading wheel in the mill chamber interior.
3. be provided with the fine powder discharging opening in the drive shaft, original grading wheel cleaned flange transfer to the outside, thereby reduced maintenance difficulty, reduce quality accident (coarse granule enters) from fluid bed mill chamber interior; There is not the grading wheel cleaning structure; Therefore the utility model can not grind indoor coarse fodder to be ground and enter grading wheel from clean flange and grading wheel gap, reduces quality accident.
Description of drawings
Fig. 1 is that existing turbine type grading wheel master cuts open figure;
Fig. 2 is along the A-A cutaway view among Fig. 1;
Fig. 3 is the fluidized bed counter jet mill system flow chart;
Fig. 4 is existing grading wheel hierarchy system commonly used;
Fig. 5 is a structural system cutaway view of the present invention;
Fig. 6 is a transmission shaft system enlarged drawing among Fig. 5;
Fig. 7 is a flat grading wheel master cutaway view of the present invention;
Fig. 8 is the vertical view of Fig. 7.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
As Fig. 5, shown in 6, the hierarchy system of a kind of airflow milling of the present invention comprises grading wheel 20, transition chamber 21, drive shaft system.
Plate blade grading wheel 20 (as Fig. 7,8) adopts wear-resisting metal material to make, uniform 40～100 slotted eyes 28 on the 360 degree directions of its disk; Wear boss 29 in the upper end to prevent buildup.
The fixedly connected dull and stereotyped grading wheel 20 in Transition Room 21 lower ends, fixedly connected with drive shaft 22 in the upper end.Be provided with fine powder discharging opening 23 in the drive shaft 22, original grading wheel cleaned flange transfer to the outside, thereby reduced maintenance difficulty, reduce quality accident (coarse granule enters) from fluid bed mill chamber interior; Can save the grading wheel cleaning structure.
Claims (3)
1. the hierarchy system of an airflow milling, comprise grading wheel, transition chamber (21), drive shaft system, it is characterized in that described grading wheel is the plate blade grading wheel (20) that wear-resisting metal material is made, uniform 40～100 slotted eyes (28) on the disk of plate blade grading wheel (20); Transition Room (21) lower end connects dull and stereotyped grading wheel (20), fixedlys connected with drive shaft (22) in the upper end; Be provided with fine powder discharging opening (23) in the drive shaft (22).
2. the hierarchy system of airflow milling according to claim 1 is characterized in that, has a boss (29) that prevents buildup in the middle of the upper surface of described flat grading wheel (20).
3. the hierarchy system of airflow milling according to claim 1 is characterized in that, described drive shaft system is provided with the cleaning dust guard, in the described cleaning dust guard between drive shaft (22) and the mill chamber with helixseal and sealing gland assembly seals; Use labyrinth disc hermetic seal (26) between drive shaft (22) and the purgative gas inlet (27); Bearing seals with rotating shaft sub-assembly (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100454288A CN101164707B (en) | 2007-08-30 | 2007-08-30 | Classifying system for airflow mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100454288A CN101164707B (en) | 2007-08-30 | 2007-08-30 | Classifying system for airflow mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101164707A true CN101164707A (en) | 2008-04-23 |
| CN101164707B CN101164707B (en) | 2012-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100454288A Active CN101164707B (en) | 2007-08-30 | 2007-08-30 | Classifying system for airflow mill |
Country Status (1)
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| CN (1) | CN101164707B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080728A (en) * | 2009-11-27 | 2011-06-01 | 宁波科宁达工业有限公司 | Pressurized seal device of transmission shaft |
| CN101712009B (en) * | 2009-12-29 | 2012-09-19 | 佛山市南海高达建筑机械有限公司 | Top-drive vertical worm impact crusher |
| CN103191813A (en) * | 2013-04-10 | 2013-07-10 | 太仓金溪粉碎设备有限公司 | Improved jet mill for fluidized bed |
| CN103203271A (en) * | 2013-04-19 | 2013-07-17 | 昆山聚贝机械设计有限公司 | Dust-proof structure of bearing for classification wheel of jet mill |
| CN102059171B (en) * | 2009-11-17 | 2014-09-24 | 宁波科宁达工业有限公司 | Transmission device of air flow mill grading wheel |
| CN114007722A (en) * | 2019-04-08 | 2022-02-01 | 热科控股有限公司 | Fluidized bed reactor arrangement and method for treating organic material using a fluidized bed reactor arrangement |
| CN116020633A (en) * | 2023-03-30 | 2023-04-28 | 兮然科技(江苏)股份有限公司 | High-temperature air flow mill |
| CN117019358A (en) * | 2023-08-02 | 2023-11-10 | 中国科学院力学研究所 | Material crushing and physical sorting device and method capable of realizing continuous production |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102044B (en) * | 1985-04-01 | 1988-10-26 | F·L·史密斯公司 | Classifying device |
| CN1231945A (en) * | 1999-01-21 | 1999-10-20 | 宁波经济技术开发区中科三环粉体高技术公司 | Energy-saving environment protection type collision fluid bed jet mill and process thereof |
| CN2370958Y (en) * | 1999-03-02 | 2000-03-29 | 宁波经济技术开发区中科三环粉体高技术公司 | Double-grading wheel-type loop running colliding fluidized bed airflow mill |
| CN201088961Y (en) * | 2007-08-30 | 2008-07-23 | 宁波科宁达工业有限公司 | Classifying system for airflow mill |
-
2007
- 2007-08-30 CN CN2007100454288A patent/CN101164707B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059171B (en) * | 2009-11-17 | 2014-09-24 | 宁波科宁达工业有限公司 | Transmission device of air flow mill grading wheel |
| CN102080728A (en) * | 2009-11-27 | 2011-06-01 | 宁波科宁达工业有限公司 | Pressurized seal device of transmission shaft |
| CN102080728B (en) * | 2009-11-27 | 2015-09-30 | 宁波科宁达工业有限公司 | A kind of pressurized seal device of transmission shaft |
| CN101712009B (en) * | 2009-12-29 | 2012-09-19 | 佛山市南海高达建筑机械有限公司 | Top-drive vertical worm impact crusher |
| CN103191813A (en) * | 2013-04-10 | 2013-07-10 | 太仓金溪粉碎设备有限公司 | Improved jet mill for fluidized bed |
| CN103203271A (en) * | 2013-04-19 | 2013-07-17 | 昆山聚贝机械设计有限公司 | Dust-proof structure of bearing for classification wheel of jet mill |
| CN103203271B (en) * | 2013-04-19 | 2014-10-01 | 昆山聚贝机械设计有限公司 | Dust-proof structure of bearing for classification wheel of jet mill |
| CN114007722A (en) * | 2019-04-08 | 2022-02-01 | 热科控股有限公司 | Fluidized bed reactor arrangement and method for treating organic material using a fluidized bed reactor arrangement |
| CN116020633A (en) * | 2023-03-30 | 2023-04-28 | 兮然科技(江苏)股份有限公司 | High-temperature air flow mill |
| CN117019358A (en) * | 2023-08-02 | 2023-11-10 | 中国科学院力学研究所 | Material crushing and physical sorting device and method capable of realizing continuous production |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101164707B (en) | 2012-03-07 |
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