CN100563836C - Internal water cooling ball mill and ball grinding method thereof - Google Patents
Internal water cooling ball mill and ball grinding method thereof Download PDFInfo
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- CN100563836C CN100563836C CNB2007101128002A CN200710112800A CN100563836C CN 100563836 C CN100563836 C CN 100563836C CN B2007101128002 A CNB2007101128002 A CN B2007101128002A CN 200710112800 A CN200710112800 A CN 200710112800A CN 100563836 C CN100563836 C CN 100563836C
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Abstract
The present invention relates to the employed ball grinding method of a kind of ferrite magnetic material industry, refer in particular to a kind of internal water cooling ball mill and ball grinding method thereof.Problems such as the present invention mainly is poor at the existing in prior technology cooling effect, and the ball milling time is long, and the slip particle size distribution is wide, provide a kind of rational in infrastructure, good cooling results, the ball milling time is short, rational internal water cooling ball mill of slip particle size distribution and ball grinding method thereof.Main contents of the present invention are: the internal water cooling ball mill, the bearing block that comprises cylindrical shell, the decelerator that connects main shaft, motor, connection motor and the main shaft of cylindrical shell, supports main shaft is formed, tube structure is double-deck, the inboard is a lining, the outside is a shell, there is a hollow interlayer two-layer centre, and main shaft has the axial tube connector of hollow; Cooling water flows into from the centre bore of an end main shaft, flows out through the centre bore of cylindrical shell interlayer from other end main shaft, and cylindrical shell rotates with speed n.
Description
Technical field
The present invention relates to the employed ball grinding method of a kind of ferrite magnetic material industry and refer in particular to a kind of internal water cooling ball mill and ball grinding method thereof.
Background technology
At present, the permanent-magnet ferrite magnetic material in the pre-burning process, pre-imitation frosted glass middle reaches from SrO, BaO react after meeting water, generate Sr (OH)
2And Ba (OH)
2When the temperature in the ball grinding cylinder raises, the Sr of generation (OH)
2And Ba (OH)
2Just many more, the slip particle is reunited, toughness increases.Therefore, the Sr of generation (OH)
2And Ba (OH)
2Coercivity H is reduced; Slip particle agglomeration, toughness are big, have influence on crystal grain the degree of orientation, remanent magnetism Br is descended.The employed ball mill great majority of permanent-magnet ferrite magnetic material are roller ball mills, the powder of permanent-magnet ferrite magnetic material need grind to single domain particle, could obtain good magnetic property like this, because the rubbing action of steel ball and barrel, steel ball and material powder produces a large amount of heats, the temperature rising can make the raising of composition and water generation chemical reaction in the raw material of institute's ball milling, generation harmful substance, obstruction magnetic property in the mechanical milling process.To have taked the method for trickle in order lowering the temperature, promptly to have added spray pipe, given the cooling of cylindrical shell trickle in the cylindrical shell outside of ball mill.The method of this trickle cooling can only local be cooled off, and cooling effect is poor, and poor working environment does not reach desirable requirement.As a kind of patent No. is the two transmission planetary ball mills of water cooling of CN200410022914.4, its invention main points are for being: the two transmission planetary ball mills of water cooling, form by frame, revolution rotor, planet rotary body, water cooling system etc., be applied to industries such as electronic material.Its feature: the revolution rotor is installed on the frame, and the planet rotary body is installed in the peripheral position of revolution drive plate; Drive unit barrel had not only been revolved round the sun but also rotation and rotating speed adjustable; Water cooling system passes in and out cooling water freely when planetary ball mill is worked, reach the purpose that makes the barrel cooling.The present invention be exactly to solve general planetary ball mill and not have that water cooling causes that heating is serious, barrel rotation and revolution rotating speed can not regulate the problem that causes mill efficiency low respectively.
Summary of the invention
Problems such as the present invention mainly is poor at the existing in prior technology cooling effect, and the ball milling time is long, and the slip particle size distribution is wide, provide a kind of rational in infrastructure, good cooling results, the ball milling time is short, rational internal water cooling ball mill of slip particle size distribution and ball grinding method thereof.
It is big that the present invention has also solved the prior art environmental pollution simultaneously, and the shortcoming that noise is big has reduced the noise pollution to environment.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: the internal water cooling ball mill, the bearing block that comprises cylindrical shell, the decelerator that connects main shaft, motor, connection motor and the main shaft of cylindrical shell, supports main shaft is formed, tube structure is double-deck, the inboard is a lining, the outside is a shell, there is a hollow interlayer two-layer centre, and main shaft has the axial tube connector of hollow.
As preferably, described main shaft tube connector one end and cylindrical shell are connected with hollow interlayer between the shell, and its axle tube connector other end connects outside water inlet or outside delivery port, and main shaft seals with the shell connection.
As preferably, described main shaft is fixed on the bearing, and bearing fixing is on bearing block, and water inlet pipe is connected with the tube connector of a side main shaft, and outlet pipe is connected with the tube connector of opposite side main shaft.
As preferably, be connected with gear wheel on the main shaft of described cylindrical shell one side, reducer input shaft is connected with the line shaft of motor by driving belt, and reducer output shaft is equipped with pinion, the gear wheel engagement on pinion and the main shaft; Gear wheel adopts bolt to be connected with main shaft, and decelerator reduces rotating speed with the bigger moment of torsion of output.
The interlayer of cylindrical shell is to cool off for water flowing, and tube connector plays water flowing, and main shaft plays the effect of ventilating water pipe simultaneously.Cooling water is entered the axial tube connector of main shaft hollow by water inlet pipe, the cooling water that enters the main shaft tube connector then enters the hollow interlayer between cylindrical shell and the shell, axial tube connector by the main shaft hollow of the other end flows out again, be a circulation like this, cooling water constantly circulates, the heat that produces when taking away ball mill work.
The ball grinding method of internal water cooling ball mill is, cooling water flows into from the centre bore of an end main shaft, flows out through the centre bore of cylindrical shell interlayer from other end main shaft, and cylindrical shell rotates with speed n.
As preferably, the computing formula of described rotation speed n is: n=C/D
1/2Rev/min, C is a constant in the formula, and D is a cylinder internal diameter, and the unit of D is a rice, and constant C is 32 to 38.
As preferably, ball mill adapted hardness is the bearing steel ball or the alloy steel ball of HRC62～65, and steel ball size is Φ 4～10mm.
As preferably, the proportioning of material, steel ball, water is: material: steel ball: water=1: 3～8: 1～1.3.
As preferably, volume of material adds the ratio that volume summation that the steel ball volume adds water accounts for the ball grinding cylinder body bulk and is: 0.6～0.8.
When ball mill turned round, material and steel ball moved along with the motion of ball grinding cylinder, and material leans on the collision effect of whereabouts steel ball and pulverizes, and leaned on the friction that reaches between the steel ball between steel ball and the barrel and levigate, and the motion of material in ball grinding cylinder plays immixture; Along with the variation of drum's speed of rotation, steel ball has motion state in three: Fig. 2 to represent that rotating speed is lower in ball grinding cylinder, because the effect of gravity, steel ball only can move in lower position, and the impulsive force of steel ball is less, and main frictionally acts on material; Fig. 3 represents that rotating speed is too high, and the suffered centrifugal force of steel ball equals or exceeds the weight of steel ball, and steel ball does not fall with the cylindrical shell rotation, and this moment, the ball milling effect was the poorest; Fig. 4 represents the situation that rotating speed is suitable, and steel ball rises to suitable height and falls.
As shown in Figure 5, solid line distributes for the particle diameter of material finished product of the present invention, and dotted line is that the particle diameter of old process stream finished product distributes.Owing to adopted ball mill of the present invention and ball grinding method, the distribution of particle sizes scope of slip narrowed down.
Therefore, it is reasonable that the present invention has method, makes the heat of the generation in the abrasive process obtain effective control, reduced the generation of harmful components, improved the degree of orientation of formability, drainage and the magnet of slip, the ball milling time ratio shortened originally, had not only saved the consumption of the energy, the distribution of particle sizes scope of slip is narrowed down, improve grinding efficiency, reduced production cost, particularly improved the stability of product and the uniformity of performance, improve production environment simultaneously, reduced noise.
Description of drawings
Accompanying drawing 1 is the elevation cross-sectional view of a kind of equipment structure chart of the present invention;
Accompanying drawing 2 is a kind of rotating speed of the present invention technology comparison diagrams when low;
Accompanying drawing 3 is a kind of rotating speed of the present invention technology comparison diagrams when too high;
Accompanying drawing 4 is a kind of rotating speed of the present invention technology comparison diagrams when suitable;
Accompanying drawing 5 is technological effect comparison diagrams of the present invention and old technology.
Be labeled as among the figure; Cylindrical shell 1, lining 2, gear wheel 3, main shaft 4, bearing block 5, bearing 6, outlet pipe 7, pinion 8, decelerator 9, driving belt 10, motor 11, water inlet pipe 12.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment 1:
As shown in Figure 1, cylindrical shell 1 is supported by main shaft 4, bearing 6 and bearing block 5 forms a revolving body, the moment of torsion of motor 11 output by driving belt 10, be delivered to decelerator 9, pinion 8 is installed on the output shaft of decelerator 9 gives gear wheel 3, gear wheel 3 and cylindrical shell 1 moving cylindrical shell 1 rotation of connector strip mutually transmission of power; Lining 2 is arranged in the cylindrical shell 1, and the outside is a shell, and there is a hollow interlayer two-layer centre, and main shaft has the axial tube connector of hollow, and tube connector is communicated with hollow interlayer.Water inlet pipe 12 is connected with the tube connector of a side main shaft, and outlet pipe 7 is connected with the tube connector of opposite side main shaft.Main shaft 4 and the sealing of shell connection.
When ball mill turned round, material and steel ball moved along with the motion of ball grinding cylinder, and material leans on the collision effect of whereabouts steel ball and pulverizes, and leaned on the friction that reaches between the steel ball between steel ball and the barrel and levigate, and the motion of material in ball grinding cylinder plays immixture; Along with the variation of drum's speed of rotation, steel ball has motion state in three: Fig. 2 to represent that rotating speed is lower in ball grinding cylinder, because the effect of gravity, steel ball only can move in lower position, and the impulsive force of steel ball is less, and main frictionally acts on material; Fig. 3 represents that rotating speed is too high, and the suffered centrifugal force of steel ball equals or exceeds the weight of steel ball, and steel ball does not fall with the cylindrical shell rotation, and this moment, the ball milling effect was the poorest; Fig. 4 represents the situation that rotating speed is suitable, and steel ball rises to suitable height and falls.
Cooling water enters from an end of spindle hole, flows out from the spindle hole of the other end through the cylindrical shell interlayer, and ball mill is with n=C/D
1/2Rev/min speed rotate.D is a cylinder internal diameter, and the unit of D is a rice, and constant C is 32, so the rotation speed n of ball mill is 32
1/2/ D rev/min of rotation.Adopt the ball mill of internal diameter 2m, this moment, velocity of rotation was 2.828 rev/mins.And the steel ball state in the ball mill as shown in Figure 4 at this moment.Ball mill adapted hardness is the bearing steel ball of HRC62～65, and steel ball size is Φ 4～10mm.The proportioning of material, steel ball, water is a material: steel ball: water=1: 3: 1.
As shown in Figure 5, solid line distributes for the particle diameter of material finished product of the present invention, and dotted line is that the particle diameter of old process stream finished product distributes.
Embodiment 2:
The proportioning of material, steel ball, water is a material: steel ball: water=1: 8: 1.3.Ball mill adapted hardness is the evanohm steel ball of HRC62～65.Simultaneously, also add entry in the material in cylindrical shell, be mixed together and mill.Constant C is 38, so the rotation speed n of ball mill is 38
1/2/ D rev/min of rotation.Adopt the ball mill of internal diameter 5m, this moment, velocity of rotation was 1.233 rev/mins.And the steel ball state in the ball mill as shown in Figure 4 at this moment.
All the other are identical with embodiment 1.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technical staff of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (7)
1. internal water cooling ball mill, comprise cylindrical shell (1), the main shaft (4) that connects cylindrical shell (1), motor (11), the decelerator (9) that connects motor (11) and main shaft (4), the bearing block (5) of supports main shaft (4), it is characterized in that, cylindrical shell (1) structure is double-deck, the inboard is lining (2), the outside is a shell, there is a hollow interlayer two-layer centre, main shaft (4) has the axial tube connector of hollow, described main shaft (4) tube connector one end and cylindrical shell (1) are connected with hollow interlayer between the shell, main shaft (4) the tube connector other end connects outside water inlet or outside delivery port, main shaft (4) and the sealing of shell connection.
2. internal water cooling ball mill according to claim 1, it is characterized in that described main shaft (4) is fixed on the bearing (6), bearing (6) is fixed on the bearing block (5), water inlet pipe (12) is connected with the tube connector of a side main shaft (4), and outlet pipe (7) is connected with the tube connector of opposite side main shaft (4).
3. internal water cooling ball mill according to claim 1, it is characterized in that being connected with gear wheel (3) on the main shaft (4) of described cylindrical shell (1) one side, decelerator (9) power shaft is connected by the line shaft of driving belt (10) with motor (11), decelerator (9) output shaft is equipped with pinion (8), gear wheel (3) engagement on pinion (8) and the main shaft (4).
4. the ball grinding method of an internal water cooling ball mill, it is characterized in that adopting any described internal water cooling ball mill of claim 1 to 3, cooling water flows into from the centre bore of an end main shaft, flow out through the centre bore of cylindrical shell interlayer from other end main shaft, cylindrical shell rotates with rotation speed n, and the computing formula of described rotation speed n is: n=C/D
1/2Rev/min, C is a constant in the formula, and D is a cylinder internal diameter, and the unit of D is a rice, and constant C is 32 to 38.
5. the ball grinding method of internal water cooling ball mill according to claim 4 is characterized in that ball mill adapted hardness is the bearing steel ball or the alloy steel ball of HRC62～65, and steel ball size is Ф 4～10mm.
6. the ball grinding method of internal water cooling ball mill according to claim 5 is characterized in that the proportioning of material, steel ball, water is: material: steel ball: water=1: 3～8: 1～1.3.
7. according to the ball grinding method of claim 5 or 6 described internal water cooling ball mills, it is characterized in that: volume of material adds the ratio that volume summation that the steel ball volume adds water accounts for the ball grinding cylinder body bulk and is: 0.6～0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101128002A CN100563836C (en) | 2006-06-19 | 2007-06-18 | Internal water cooling ball mill and ball grinding method thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610052033 | 2006-06-19 | ||
| CN200610052033.6 | 2006-06-19 | ||
| CNB2007101128002A CN100563836C (en) | 2006-06-19 | 2007-06-18 | Internal water cooling ball mill and ball grinding method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101091934A CN101091934A (en) | 2007-12-26 |
| CN100563836C true CN100563836C (en) | 2009-12-02 |
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|---|---|---|---|
| CNB2007101128002A Active CN100563836C (en) | 2006-06-19 | 2007-06-18 | Internal water cooling ball mill and ball grinding method thereof |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553683B (en) * | 2012-01-10 | 2014-06-04 | 宜宾职业技术学院 | Smashing process of permanent ferrite pre-sintering material |
| CN102806121A (en) * | 2012-03-05 | 2012-12-05 | 王娟 | Ball grinding machine |
| CN103657804A (en) * | 2013-11-22 | 2014-03-26 | 中国科技开发院广西分院 | Horizontal type stirring ball-milling reactor for intensifying bentonite modification |
| CN105833951A (en) * | 2016-06-20 | 2016-08-10 | 常州市龙鑫化工机械有限公司 | Ceramic composite cylinder |
| CN110560221B (en) * | 2019-09-25 | 2022-01-11 | 山西医科大学第二医院 | A ball mill for medicine preparation |
| CN114643120B (en) * | 2022-02-23 | 2023-06-16 | 北矿磁材（阜阳）有限公司 | Method for manufacturing dry-pressed anisotropic sintered magnetic powder |
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| CN101091934A (en) | 2007-12-26 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Dongyang Fushite Magnetic Industry Co., Ltd. Assignor: Li Lingfeng Contract record no.: 2011330001008 Denomination of invention: Internal water-cooling ball mill, and ball mill method Granted publication date: 20091202 License type: Exclusive License Open date: 20071226 Record date: 20110722 |
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| ASS | Succession or assignment of patent right |
Owner name: DONGYANG FIRST MAGNETICS CO., LTD. Free format text: FORMER OWNER: LI LINGFENG Effective date: 20121030 |
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Effective date of registration: 20121030 Address after: 322105 Zhejiang city of Dongyang province Zhaizhi Li Jiang Industrial Zone Patentee after: Dongyang Fushite Magnetic Industry Co., Ltd. Address before: 322105 Zhejiang city of Dongyang province Zhaizhi Li Jiang Industrial Zone Patentee before: Li Lingfeng |