CN100443188C - Super-fine classified mill - Google Patents
Super-fine classified mill Download PDFInfo
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- CN100443188C CN100443188C CNB2005100206823A CN200510020682A CN100443188C CN 100443188 C CN100443188 C CN 100443188C CN B2005100206823 A CNB2005100206823 A CN B2005100206823A CN 200510020682 A CN200510020682 A CN 200510020682A CN 100443188 C CN100443188 C CN 100443188C
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Abstract
The present invention discloses a superfine classifying mill which comprises a stirring shaft, a milling cylinder, a feeding hole and a discharge hole, wherein the feeding hole and the discharge hole are arranged on the milling cylinder; the stirring shaft is arranged in the milling cylinder, and a vane is arranged on the stirring shaft; the milling cylinder comprises two stages or more than two stages of cylinder bodies which are arranged in series, and a feeding hole and a discharge hole are respectively arranged on the cylinder body of each stage. The feeding hole of the cylinder body of the first stage and the discharge hole of the cylinder of the last stage are respectively used as the feeding hole and the discharge hole of the whole milling cylinder, and the feeding hole of each cylinder body of the secondary stage is communicated with the discharge hole of the cylinder body of the next stage of the secondary stage. The present invention has the advantages that the multi-stage cylinder bodies which are orderly connected in series are adopted to cause powder to be continuously milled by a plurality of units and particle diameters to be separated, the milling effect and the classifying function are multiplied step by step to cause processing procedures of multi-stage milling and multi-stage classification to be completed in the same milling cylinder through one-time job, the time and the labor are saved, and the functions for better controlling the particle size distribution of the finally discharged powder and improving the milling efficiency and the milling effect are achieved.
Description
[technical field]
The present invention relates to grind machinery, be specifically related to a kind of super-fine classified mill.
[background technology]
At present, domestic and international widely used powder processing machinery is a ball mill.Traditional ball mill is to utilize the rotation of ball mill staving that thereby the ball milling subband in the staving is arrived the certain height storage power, impacts the effect that material reaches the material pulverizing thereby form impulsive force in the sub-dropping process of ball milling.This powder preparation method equipment is simple, can obtain the satisfactory powder of granularity by the method for lengthening working time, and its another one characteristics are that batch mixing is even.Its remarkable shortcoming is to take up an area of greatly, the energy consumption height, and production efficiency is low, and powder granularity is thick.
In addition, also have traditional ultra-fine equipment, can be classified as two big classes substantially, a class for example stirs mill, vibromill etc. for medium mill is arranged, and is characterized in the product fineness height, and output is big, but process of producing product is discontinuous, and Granularity Distribution is not concentrated.Another kind of is no medium mill, as airflow milling etc., is characterized in that production process is continuous, and Granularity Distribution is more concentrated, but energy consumption is high, and product fineness is low.
In medium mill was arranged, vibromill was made up of cylindrical shell and vibrating grid.Adopt the mode of the continuous discharging of continuous dosing, material is dry powder mostly, vibrating grid drives cylindrical shell and produces eccentric vibration, make material in mill tube, bump and pulverized with medium, after material comes out from discharging opening, through grader, particulate becomes finished product, and coarse grain is got back to grinding once more in the mill tube from charging aperture.Its product fineness is general to stir mill slightly, also is not really ultra-fine equipment truly.The material that enters vibromill can be a slurry also, but can only take a charging on feeding manner, the mode of a discharging after grinding a period of time.Stir mill and form, adopt disposable feeding intake by shaft, cylindrical shell, disposable discharging after grinding is finished, the material fineness is controlled by milling time.Material can be that slurry also can be a dry powder, shaft drives medium and material rotation, material is tapered in the mode of collision friction mutually with medium in cylindrical shell, but because the initial size of material can not be identical, therefore and cylindrical shell mostly is cylindrical, and the suffered applied stress of material is identical with lapping mode in stirring mill, causes the final size distribution of material can not concentrate on a very little scope, be not owe the mill be exactly overground, can not accurately control size distribution.
[summary of the invention]
Purpose of the present invention is intended to overcome above-mentioned the deficiencies in the prior art, proposes a kind of super-fine classified mill that can better control size distribution, grinding effect excellence.
The technical scheme that realizes above-mentioned purpose is: a kind of super-fine classified mill, comprise shaft, mill tube and be arranged at charging aperture and discharging opening on the mill tube, described shaft is positioned at mill tube, which is provided with blade, described mill tube comprises that the two-stage of arranged in series or two-stage are with upper shell, be respectively equipped with charging aperture and discharging opening on the cylindrical shells at different levels, as the charging aperture and the discharging opening of whole mill tube, the charging aperture of each secondary cylindrical shell is connected with the discharging opening of its upper level cylindrical shell the discharging opening of the charging aperture of one-level cylindrical shell and final stage cylindrical shell respectively.
Preferably, the charging aperture of described cylindrical shells at different levels is arranged on the bottom of cylindrical shells at different levels, and the discharging opening of cylindrical shells at different levels is arranged near the center of cylindrical shell upper end at different levels.
Preferably, the upper end internal diameter of described cylindrical shells at different levels increases successively gradually.
Preferably, the longitudinal section of described cylindrical shells at different levels is the little down shape that large diameter increases gradually that goes up.
Further preferably, the cross section of described cylindrical shells at different levels is circle or regular polygon.
More preferably, the longitudinal section of described cylindrical shells at different levels is trapezoidal for what stand upside down.
The blade that super-fine classified mill of the present invention adopted preferably has two types, and a kind of have along the axial pod apertures of shaft, and another kind does not have pod apertures; Described blade with pod apertures is arranged on the bottom of cylindrical shells at different levels, and the described blade that does not have pod apertures is arranged on the top of cylindrical shells at different levels.
Super-fine classified mill of the present invention also can comprise the abrasive media of containing in cylindrical shells at different levels, and described abrasive media has rigid body, also is coated with the elastic wear-resisting layer on its rigid body.
Adopt technique scheme, beneficial technical effects of the present invention is: 1) adopt the multistage cylindrical shell of series connection successively, make the powder grinding and the particle size sorting of a plurality of unit of process continuously, grinding effect and grading double step by step, make the processing procedure of in a mill tube, having finished multistage grinding, classification by one-stop operation, save time, laborsaving, reach the size distribution of the last discharging powder of better control, the effect that improves grinding efficiency and effect; 2) charging aperture is arranged on the cylindrical shell bottom, is convenient to control material by the speed that pumps into material and stops the time of grinding in mill tube, the degree of grinding of control material; 3) discharging opening of cylindrical shells at different levels is arranged near the center of cylindrical shell upper end at different levels, because action of centrifugal force, fine grained can be concentrated to the center, overflow from discharging opening near main shaft, therefore each grade discharging all is the reinforcement control that particle size range is carried out, after multistage grinding, this reinforcement control more embodies with the effect of multiplication, can produce the narrow particle diameter distribution powder that has preeminent performance; 4) structure that adopts the upper end internal diameter of cylindrical shells at different levels to increase gradually successively, centrifugal force increases step by step, make more and more obvious by the classification usefulness that is fed to discharging cylindrical shells at different levels, though thereby the granularity of powder attenuate step by step, but still guarantee the particle diameters control effects that can both play very well at different levels; 5) cylindrical shells at different levels adopt the shape that internal diameter increases gradually, after material enters the mill tube bottom, rising along with material, mill tube internal diameter in the vertical increases gradually, thereby linear velocity increases gradually, material is a speed-change process in the vertical, so the suffered stress of material increases, internal tiny crack increases, make shearing, extruding, collision etc. grind machine-processed acting in conjunction, in fact be equivalent to shear extrusion, shear the process of lapping of a plurality of circulations of multiple devices of extruding more again, improved grinding efficiency greatly; 6) cylindrical shells at different levels are as adopting circular cross section, and it is identical making x wire speed, so the result of its grinding will play the finishing effect to material particles; According to centrifugal principle, bulky grain will be in apart from the farthest, center, stressed maximum, and grinding efficiency is the highest; Otherwise fine grained is in apart from the center the most nearby, and grinding efficiency is minimum, makes the energy reasonable distribution, and is very beneficial for the concentrated distribution of grain diameter; As adopt the regular polygon cross section, when material enters this section of mill tube, because the radius apart from the axle center does not wait in the horizontal direction, thereby linear velocity difference, and have a plurality of linear velocities, make that material rotation in the horizontal direction is a speed-change process, so the suffered STRESS VARIATION of material is bigger, can further improve grinding efficiency; 7) adopt trapezoidal cylindrical shell longitudinal section, make material that the vertical line speed of even increase be arranged, grinding effect is preferably highly all arranged at each of whole cylindrical shell, and easy to manufacture on the engineering; 8) different parts at cylindrical shells at different levels adopts two kinds of dissimilar blades respectively, the grinding blade that has pod apertures is adopted in cylindrical shells at different levels bottom, can be so that the abrasive media of inner barrel and material produce powerful in the vertical eddy current shearing force and impact force, and the grinding blade with pod apertures is adopted not on cylindrical shells at different levels top, can can further improve grinding efficiency so that the abrasive media of inner barrel and material produce powerful centrifugal shearing force and impact force; 9) adopt the abrasive media that is coated with the elastic wear-resisting layer on the rigid body surface, make the rigidity mill be situated between and become elastic fluid, thereby with the material contact process in increased contact area, its mechanism is equivalent to continual in process of lapping material particles be applied an external pressure, increase the internal stress of granule interior, help the ultra micro refinement of material more, can improve grinding efficiency greatly; And the coating of elastic layer has reduced the hard damage of particle surface, avoids hard collision and friction between the rigid media to produce micro mist and contaminated material.
Below by embodiment also in conjunction with the accompanying drawings, the present invention is described in further detail:
[description of drawings]
Fig. 1 is a kind of super-fine classified mill structural representation.
Fig. 2 is the blade schematic diagram with pod apertures.
Fig. 3 is the blade schematic diagram with pod apertures.
[specific embodiment]
A kind of super-fine classified mill in conjunction with Fig. 1～Fig. 3, comprises shaft 4, by a mill tube of forming to level Four cylindrical shell 6,7,8,9 arranged in series.Be respectively equipped with charging aperture and discharging opening (except that the discharging opening 10 of the charging aperture 12 of one-level cylindrical shell 6 and level Four cylindrical shell 9, all not illustrating in the drawings) on the cylindrical shells at different levels, the charging aperture of described cylindrical shells at different levels is arranged on the bottom of cylindrical shells at different levels, the discharging opening of cylindrical shells at different levels is arranged near the center of cylindrical shell upper end at different levels, the charging aperture 12 of one-level cylindrical shell 6 and the discharging opening 10 of level Four cylindrical shell 9 are respectively as the charging aperture and the discharging opening of whole mill tube, and the charging aperture of each secondary cylindrical shell is connected with the discharging opening of its upper level cylindrical shell.The cross section of cylindrical shells at different levels is circular, and the longitudinal section is trapezoidal for what stand upside down, and the upper end internal diameter of cylindrical shells at different levels increases successively gradually.Shaft 4 is in cylindrical shells at different levels, and the equally spaced vertically blade 5 that is provided with on the shaft 4, shaft 4 are driven through reductor 2 by motor 1 and rotate, and can be rotated stirring in mill tube, and motor 1 and reductor 2 are arranged on the motor cabinet 3.Blade 5 has two types, and a kind of have along the axial pod apertures 11 of shaft, and another kind does not have pod apertures; Described blade with pod apertures is arranged on the bottom of cylindrical shells at different levels, and the described blade that does not have pod apertures is arranged on the top of cylindrical shells at different levels.
This super-fine classified mill employing mixes stirring method with abrasive media and material and carries out grinding of material in mill tube, (the present patent application people proposes the Chinese invention patent application to this abrasive media to the such abrasive media of preferred use among the present invention, application number is 200410010534.9): have rigid body, also be coated with the elastic wear-resisting layer on its rigid body, the material of this elastic wear-resisting layer is preferably the high abrasion resin.
The concrete course of work: material is added the slurry that water is made solid content 40%-75%, with pump with the charging aperture 12 of material by grinding machine bottom axis direction feeder main frame one-level mill tube bottom.In main frame mill tubes at different levels 6～9 inside, shaft 4 drives blade 5 rotation at a high speed, and its range of speeds is 600～1400 rev/mins, blade 5 equidistant arrangements.Slip is risen by the mill tube bottom under certain pressure, the grinding blade that has pod apertures near the cylindrical shell bottom, make abrasive media and material in the mill tube produce powerful in the vertical eddy current shearing force and impact force, and near grinding unit mill tube top not with the grinding blade of pod apertures, make that abrasive media and the material in the mill tube produces powerful centrifugal shearing force and impact force.Because the radius on cylindrical shells at different levels top is greater than the bottom, so under action of centrifugal force, help the classification of thickness material more, make fine near the axle center, enter the next stage cylindrical shell, because the radius difference strengthens step by step at the bottom of the top of next stage cylindrical shell, thereby centrifugal force increases step by step, classification usefulness is more and more obvious, raw meal particle size distributes and further concentrates, final slurry is overflowed by main frame top exit 10, in the mode of working continuously, will pulverize, ultra-fine, classification multistage combination in same operation is finished, the traditional batch process and the technology of single classification have been changed, so both simplified production process, cut down the consumption of energy greatly again, guaranteed fully that Granularity Distribution was narrow.
Experimental example:
1) with ceramic pigment (vanadium zirconium Huang is produced in Guangdong, and granularity is D90＜30 μ (D90 represents in the sample diameter of 90% particle), 1 kilogram), adds the mixed slurry that water is made solid content 65%;
2) above-mentioned slurry is carried out ultra-fine processing contrast experiment in order to following equipment respectively, represent the ultra micro thinning effect of powder with the size distribution of powder after laser particle size analyzer (JL1001 type, instrument research institute in Dandong produces) the measurement refinement;
A, ball mill (QMA-300-500 type, Liuzhou City's prestige woods superhard material instrument factory is produced): disposable feeding intake, start was ground 4 hours continuously, shut down, and took out material, and sampling is surveyed granularity, D90＜20 μ m.
B, stirring mill (AXM-8 type, Wuxi City hypo drying machinery instrument factory): disposable feeding intake, start was ground 4 hours continuously, and material is taken out in shutdown, and sampling is surveyed granularity, D90＜5 μ m, Dmax=10 μ m (Dmax represents the diameter of the largest particles in the sample).
C, super-fine classified mill of the present invention: continuous feed, discharging continuously in the discharging opening sampling, is surveyed granularity, D90＜0.4 μ m, Dmax=1.5 μ m.
By The above results as can be seen, the present invention has medium classification grinding tool that excellent grinding effect is arranged.
Claims (6)
1, a kind of super-fine classified mill, comprise shaft, mill tube and be arranged at charging aperture and discharging opening on the mill tube, described shaft is positioned at mill tube, which is provided with blade, it is characterized in that: described mill tube comprises that the two-stage of arranged in series or two-stage are with upper shell, the upper end internal diameter of cylindrical shells at different levels increases successively gradually, be respectively equipped with charging aperture and discharging opening on the cylindrical shells at different levels, the charging aperture of cylindrical shells at different levels is arranged on the bottom of cylindrical shells at different levels, the discharging opening of cylindrical shells at different levels is arranged near the center of cylindrical shell upper end at different levels, as the charging aperture and the discharging opening of whole mill tube, the charging aperture of each secondary cylindrical shell is connected with the discharging opening of its upper level cylindrical shell the discharging opening of the charging aperture of one-level cylindrical shell and final stage cylindrical shell respectively.
2, super-fine classified mill according to claim 1 is characterized in that: the longitudinal section of described cylindrical shells at different levels is the little down shape that large diameter increases gradually that goes up.
3, super-fine classified mill according to claim 2 is characterized in that: the cross section of described cylindrical shells at different levels is circle or regular polygon.
4, super-fine classified mill according to claim 3 is characterized in that: the longitudinal section of described cylindrical shells at different levels is trapezoidal for what stand upside down.
5, super-fine classified mill according to claim 1 and 2 is characterized in that: described blade comprises two types, and a kind of have along the axial pod apertures of shaft, and another kind does not have pod apertures; Described blade with pod apertures is arranged on the bottom of cylindrical shells at different levels, and the described blade that does not have pod apertures is arranged on the top of cylindrical shells at different levels.
6, super-fine classified mill according to claim 1 is characterized in that: also comprise the abrasive media of containing in cylindrical shells at different levels, described abrasive media has rigid body, also is coated with the elastic wear-resisting layer on its rigid body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100206823A CN100443188C (en) | 2005-04-05 | 2005-04-05 | Super-fine classified mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100206823A CN100443188C (en) | 2005-04-05 | 2005-04-05 | Super-fine classified mill |
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| Publication Number | Publication Date |
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| CN1692985A CN1692985A (en) | 2005-11-09 |
| CN100443188C true CN100443188C (en) | 2008-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100206823A Expired - Fee Related CN100443188C (en) | 2005-04-05 | 2005-04-05 | Super-fine classified mill |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446509B (en) * | 2014-10-23 | 2016-08-24 | 江苏金石研磨有限公司 | A kind of submicron alumina superfine powder tandem grinding process for preparing |
| CN113461004B (en) * | 2021-06-10 | 2023-08-04 | 山东鑫海矿业技术装备股份有限公司 | Vertical graphite stripping equipment |
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| US3982699A (en) * | 1973-12-22 | 1976-09-28 | Heinz Jager | Method and plant for producing cement or other material of given fineness and granular structure |
| CN87103890A (en) * | 1986-05-30 | 1988-03-02 | 斯坦科尔公司 | Autogenous attrition grinding |
| CN2056609U (en) * | 1987-11-04 | 1990-05-02 | 秦皇岛黑色冶金矿山设计研究院 | Verticle ball mill |
| CN2341714Y (en) * | 1998-04-30 | 1999-10-06 | 李征宇 | Super fine vertical stirring high energy ball mill |
| CN2414836Y (en) * | 2000-01-24 | 2001-01-17 | 华南理工大学 | Superfine whirl mill |
| CN2541046Y (en) * | 2002-04-26 | 2003-03-26 | 北京柯林斯达能源技术开发有限公司 | Vertical spindle linear accelerating crusher |
| CN1559692A (en) * | 2004-03-05 | 2005-01-05 | 昆山密友实业有限公司 | Dry stirring ball mill with three-filter-board and screenting type |
| CN2784081Y (en) * | 2005-04-05 | 2006-05-31 | 华南理工大学 | Superfine grading mill |
-
2005
- 2005-04-05 CN CNB2005100206823A patent/CN100443188C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3982699A (en) * | 1973-12-22 | 1976-09-28 | Heinz Jager | Method and plant for producing cement or other material of given fineness and granular structure |
| CN87103890A (en) * | 1986-05-30 | 1988-03-02 | 斯坦科尔公司 | Autogenous attrition grinding |
| CN2056609U (en) * | 1987-11-04 | 1990-05-02 | 秦皇岛黑色冶金矿山设计研究院 | Verticle ball mill |
| CN2341714Y (en) * | 1998-04-30 | 1999-10-06 | 李征宇 | Super fine vertical stirring high energy ball mill |
| CN2414836Y (en) * | 2000-01-24 | 2001-01-17 | 华南理工大学 | Superfine whirl mill |
| CN2541046Y (en) * | 2002-04-26 | 2003-03-26 | 北京柯林斯达能源技术开发有限公司 | Vertical spindle linear accelerating crusher |
| CN1559692A (en) * | 2004-03-05 | 2005-01-05 | 昆山密友实业有限公司 | Dry stirring ball mill with three-filter-board and screenting type |
| CN2784081Y (en) * | 2005-04-05 | 2006-05-31 | 华南理工大学 | Superfine grading mill |
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| Publication number | Publication date |
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| CN1692985A (en) | 2005-11-09 |
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Effective date of registration: 20110831 Address after: Wuzhong District Wusong Road in Suzhou city Jiangsu province 215124 building D No. 1 Wuzhong Export Processing Zone Building Patentee after: Suzhou force energy saving Technology Co.,Ltd. Address before: 519000 Guangdong province Zhuhai Nanping Science and Technology Industrial Park Patentee before: Zhuhai Yi Hua composite Mstar Technology Ltd. Effective date of registration: 20110831 Address after: 519000 Guangdong province Zhuhai Nanping Science and Technology Industrial Park Patentee after: Zhuhai Yi Hua composite Mstar Technology Ltd. Address before: 510641 Tianhe District Road, Guangdong, Guangzhou, China, five Patentee before: South China University of Technology |
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