CN208960034U - A kind of elliposoidal ball mill barrel - Google Patents
A kind of elliposoidal ball mill barrel Download PDFInfo
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- CN208960034U CN208960034U CN201821477895.8U CN201821477895U CN208960034U CN 208960034 U CN208960034 U CN 208960034U CN 201821477895 U CN201821477895 U CN 201821477895U CN 208960034 U CN208960034 U CN 208960034U
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Abstract
The utility model relates to finely divided technical fields, disclose a kind of elliposoidal ball mill barrel.It is provided with several along the equally distributed reinforcing rib of its inner wall on the inner wall of the elliposoidal cylinder of the utility model, the reinforcing rib extends to the other end from one end of elliposoidal cylinder polar axis, and the reinforcing rib has arc-shaped recess close to the surface of inner barrel.The cylinder is without welding liner plate, and the liner plate loss for avoiding two sides in traditional cylindrical pellet grinding mill barrel is larger, and two side cover plate liners wear very fast problem.It can be very good dispersion steel ball, raw material, disperse means using elliposoidal cylinder to impact to two end motion bring of cylinder, make entire cylinder uniform stressed, increase the uniformity of ball milling, improve grinding efficiency.Ball-milling Time can be shortened using the cylinder of the utility model, under identical operating condition, ball milling barrel wear reduces by 60%, and the slurry centralized particle diameter after ball milling.
Description
Technical field
The utility model relates to finely divided technical field more particularly to a kind of elliposoidal ball mill barrels.
Background technique
Broken ferrite fines are a highly important links in ferrite production technique, are the ferrites for obtaining pre-burning
Coarse powder is obtained after coarse crushing obtains the thinner molding slurry of granularity using further finely divided.Raw material is a kind of close
Small, the substance with ferrite crystal structure loosely is spent, and refines raw material by fine crushing process to obtain slurry, makes it
With preferable size distribution, good double sintering chemical reactivity, preferable blank mouldability is to finally obtaining performance
The magnet of good high yield rate has a very important role.
Slurry Granularity distribution after finely divided is an important factor for influencing slurry processability, and the ratio of large or fine granule will take
With reasonable, if thick particles are excessive, fine grain particle is few, and grading curve moves to right, and blank porosity is big after molding, burns
Magnet stomata is more after knot, and crystal growth is also discontinuous, big crystal grain " annexation " little crystal grain, and big crystal grain ratio is excessive in magnet, magnet
Degradation.If fine grain particle is excessive, thick particles are very few, will lead to molding time lengthening, influence shaping efficiency, at
Blind crack increases inside type blank, and magnet cracking increases after sintering, influences yield rate.Therefore comparatively ideal particle diameter distribution should be in
An existing normal distribution curve, large or fine granule are reasonably distributed, and normal distribution curve " sharp " is got over in ferrite production a bit
Favorably.
The finely divided method of ferrite production of existing mainstream mainly has ball milling and sand milling, and ferrite production is cylinder with ball mill
Shape structure, both ends are welded with two pieces of circular metal plates, form a closed cylindrical body.Inside is equipped with ball-milling medium steel ball, crushed material
Material, disperse means water are driven by a motor ball mill barrel rotation, and barrel body rotation drives the intracorporal steel ball of cylinder to move together with material,
Centrifugal force and ball mill barrel inner wall frictional force effect under, steel ball promoted to certain altitude, then under gravity under
It falls, material crushes under the impact of steel ball, is reached by the shock friction between ball and ball, between ball and barrel wall, ball and material
To the effect that raw material is levigate.Sand mill is to produce the steel ball in cylinder with rotating circular disk or stirring rod in a vertical cylinder
Raw random high-speed motion, plays abrasive action to material in cylinder.At present mass production ferrite fines it is broken with ball mill compared with
It is more, it is internal equipped with several " muscle " for being used to reinforce steel ball Yu the mutual collision effect of material, generally rectangular in shape or circular arc
Shape, by the levigate material of the uniform rotation of ball mill, permanent-magnet ferrite is Magnetoplumbate-type crystal structure, brilliant intracorporal structure cell it is each
A ion is mainly to be mutually bonded by the effect of ionic bond, and bonding force is only second to atom key, therefore permanent-magnet ferrite macro manifestations
It is hard and crisp, therefore is milled to the granularity of submicron order not only Ball-milling Time is longer, but also the loss of the equipment such as ball mill, steel ball
Also larger.Find that the liner plate loss of two sides in this conventional ball mill barrel is larger by disassembling a ball mill scrapped,
And the slurry ground is through the generally existing particle diameter distribution of analysis is wide, molding time is longer, the magnet crystal after compacting sintering is abnormal
The problems such as growth ratio is big, magnet performance is unstable.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of elliposoidal ball mill barrel.The utility model
Using the cylinder of elliposoidal, without welding liner plate, avoid the liner plate losses of two sides in traditional cylindrical pellet grinding mill barrel compared with
Greatly, two side cover plate liners wear very fast problem.Using elliposoidal cylinder can be very good dispersion steel ball, raw material, disperse means to
The impact of two end motion bring of cylinder, makes entire cylinder uniform stressed, increases the uniformity of ball milling, improves grinding efficiency.And
There are several equally distributed reinforcing ribs in inner barrel, there is arc-shaped recess on the surface of reinforcing rib, helps to improve ball milling Jie
The mechanical energy of matter, more quickly and effectively the raw material of ball milling will be needed levigate.
The utility model the specific technical proposal is: a kind of elliposoidal ball mill barrel, be arranged on the inner wall of the cylinder
Have several along the equally distributed reinforcing rib of its inner wall, the reinforcing rib extends to the other end from one end of elliposoidal cylinder polar axis,
The reinforcing rib has arc-shaped recess close to the surface of inner barrel.
The liner plate loss of two sides is larger in traditional cylindrical pellet grinding mill barrel, in ball mill rotation process, mainly
The movement of steel ball and raw material to both ends, therefore the cover board in mechanical milling process middle cylinder body two sides are prevented by the cover board of cylinder two sides
It is constantly being impacted, is causing the abrasion of two side cover plate liners very fast.For the finely divided efficiency of ferrite raw material in current production
The technical problems such as not high, ball milling bucket wear liner is big, and Ball-milling Time is long, and particle diameter distribution is wide, the utility model people devise ellipsoid
The ball mill barrel of shape, the cylinder is without welding liner plate.Elliposoidal cylinder is connected by the bearing of the prior art with reduction gearing
One variable-frequency motor, variable-frequency motor is able to achieve the rotation of the both direction clockwise and anticlockwise of cylinder, and then controls cylinder
Both direction rotation, electrical power control cabinet control the operating of motor.
For traditional cylindrical pellet grinding machine in mechanical milling process, energy loss is higher.The loss of energy mainly has three bulks, the
One piece is that electric energy generates loss when being converted into mechanical energy by motor, is calculated according to higher electric efficiency 93% or so, this part
Energy loss is 7% or so, and for this partial loss directly with motor performance correlation, room for promotion is limited.Second piece is that motor exports
Mechanical energy is converted into the mechanical energy of ball-milling medium by transmission system, and the energy loss of this block typically constitutes from 10 ~ 15% left sides of total energy consumption
The right side depends primarily on the efficiency of transmission system, and the effect that this part is promoted is also limited.Third block is the machinery of ball-milling medium
It can be converted into the surface energy of raw material, according to pertinent literature, the function for really acting on raising raw material surface energy only accounts for input work
0.3 ~ 1.3% or so, most of function becomes ball milling lost work, these ball milling lost works are mainly shown as raw material, disperse means and ball milling
Medium, between ball-milling medium, the heat generated is hit in the phase mutual friction of ball-milling medium and liner plate etc., so we can be intuitive
Observe that the slurry temperature after ball milling can reach 70 degrees Celsius or more sometimes.Therefore ball mill during rotation, improves
The mechanical energy of ball-milling medium just has biggish space.
It can be very good dispersion steel ball, raw material, disperse means using elliposoidal cylinder to impact to two end motion bring of cylinder,
Make entire cylinder uniform stressed, increase the uniformity of ball milling, improves grinding efficiency.And several are provided on cylinder inboard wall
There is arc-shaped recess on equally distributed reinforcing rib, reinforcing rib surface.Raw material grind thinner surface can increase it is bigger, required turn
The function changed onto raw material is also more.Reinforcing rib is arranged in cylinder inboard wall in the utility model, during ball mill one circle of rotation,
Maximize the surface energy for converting the kinetic energy of motor to raw material crushing.Several reinforcements that the utility model is arranged in cylinder inboard wall
Muscle can ball mill rotate one circle during improve ball-milling medium mechanical energy, can " pocket " more better than conventional bead mill live ball
Grinding media steel ball improves its potential energy, and kinetic energy striking impact raw material is converted into when turning to certain position to it, reaches levigate
The purpose of raw material.One face of reinforcing rib is made into arcwall face and is conducive to the potential energy for further promoting steel ball, a part of steel ball is poly-
Collection is on arcwall face, and when ball mill rotates, under the effect of the frictional force of centrifugal force and reinforcing rib surface arc, steel ball is promoted
To higher height, many a waterfall types are formed under gravity and let out the effect fallen.In such a mode, steel ball is to material
Impact it is stronger, steel ball and raw material phase mutual friction, steel ball, reinforcing rib, the friction frequency of raw material between barrel are higher, have
Conducive to efficient levigate raw material, increase its surface energy.
Preferably, two polar radius of the cylinder and the ratio of equatorial radius are 1.2 ~ 3:1.2 ~ 3:1.
Preferably, two polar radius of the cylinder and the ratio of equatorial radius are 1.5 ~ 2:1.5 ~ 2:1.
Preferably, the reinforcing rib is rectangular-shape, the ratio of the width of reinforcing rib and longer polar radius for 1:30 ~
80, the ratio of the height of reinforcing rib and longer polar radius is 1:20 ~ 60.Preferably, the width of reinforcing rib and longer pole
The ratio of radius is 1:40 ~ 60, and the ratio of the height of reinforcing rib and longer polar radius is 1:30 ~ 50.
Preferably, the quantity of the reinforcing rib is 8 ~ 13.
Preferably, the central angle of the arc-shaped surface of the recess is 60 ~ 180 °.The central angle of arcwall face is at 60 ~ 180 °
Between when the effect that generates it is preferable.
The reinforcing rib of cylinder inboard wall setting can improve the mechanical energy of ball-milling medium, energy during ball mill rotates a circle
Preferably " pocket " lives ball-milling medium steel ball, increases impact of the steel ball to raw material, achievees the purpose that levigate raw material.By the one of reinforcing rib
A face is made into arcwall face and is conducive to the potential energy for further promoting steel ball, and a part of steel ball is gathered on arcwall face, ball mill rotation
When, under the effect of the frictional force of centrifugal force and reinforcing rib surface arc, steel ball is promoted to higher height, in the work of gravity
The effect fallen is let out with the lower many a waterfall types of formation.In such a mode, steel ball is stronger to the impact of material, steel ball and original
Expect phase mutual friction, steel ball, reinforcing rib, the friction frequency of raw material between barrel are higher, are conducive to efficient levigate raw material, increase
Its surface energy.Ball milling dead angle can be greatly avoided when cylinder alternate rotation clockwise and anticlockwise, improve different batches ball milling
Stability and consistency.The ball mill barrel of the elliposoidal of the utility model design, can greatly shorten Ball-milling Time, mention
The efficiency of high ball milling, the slurry centralized particle diameter after grinding, can be improved the quality of finished product.
The specification of reinforcing rib and the central angle of recess are conducive to preferably " pocket " live ball in the cylinder of the utility model design
Grinding media steel ball helps to increase impact of the steel ball to material, increases steel ball and raw material phase mutual friction, increase steel ball, reinforcing rib,
The friction frequency of raw material between barrel.
Compared with prior art, the utility model has the following beneficial effects: the elliposoidal cylinder of the utility model has
The advantages that grinding efficiency slurry particle diameter distribution that is high, wear-resistant, grinding is narrow, and slurry shaping efficiency is high, is milled to identical partial size, adopts
Ball-milling Time can be shortened with the utility model, under identical operating condition, ball milling barrel wear reduces 60%.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the cross section of elliposoidal ball milling cylinder of the utility model；
Fig. 2 is a kind of schematic cross-section of the reinforcing rib of elliposoidal ball milling cylinder of the utility model；
Fig. 3 is the particle diameter distribution that gained slurry after ball milling is carried out using a kind of elliposoidal ball milling cylinder of the utility model
Figure.
Accompanying drawing number: 1. cylinders；2. reinforcing rib；3. recess.
Specific embodiment
Below with reference to embodiment, the utility model will be further described.In the present invention related device,
Connection structure and method, if being device well known in the art, connection structure and method without refering in particular to.
Embodiment 1
As illustrated in figs. 1 and 2: a kind of elliposoidal ball milling cylinder is provided on the inner wall of the cylinder 1 several along its inner wall
Equally distributed reinforcing rib 2, the reinforcing rib extend to the other end from one end of elliposoidal cylinder polar axis, and the reinforcing rib is close
The surface of inner barrel has arc-shaped recess 3.The ratio of the polar radius of the cylinder and two equatorial radius is 1.5:2:
1.The reinforcing rib is rectangular-shape, and the ratio of the width of reinforcing rib and longer polar radius is 1:50, the height of reinforcing rib and
The ratio of longer polar radius is 1:40.The quantity of the reinforcing rib is 12.The central angle of the arc-shaped surface of the recess is
80°。
When ball mill barrel rotation, the reinforcing rib of cylinder inboard wall setting can improve during ball mill rotates a circle
The mechanical energy of ball-milling medium preferably " pocket " can live ball-milling medium steel ball, increase impact of the steel ball to raw material, reach levigate raw material
Purpose.One face of reinforcing rib is made into arcwall face and is conducive to the potential energy for further promoting steel ball, a part of steel ball is gathered in
On arcwall face, when ball mill rotates, under the frictional force effect of centrifugal force and reinforcing rib surface arc, steel ball promoted to compared with
High height forms many a waterfall types under gravity and lets out the effect fallen.In such a mode, steel ball rushes material
Hit more strong, steel ball and raw material phase mutual friction, steel ball, reinforcing rib, the friction frequency of raw material between barrel are higher, are conducive to
Efficient levigate raw material, increases its surface energy.Cylinder is rotated clockwise can be greatly with the ball milling method of alternate rotation counterclockwise
Ball milling dead angle is avoided, the stability and consistency of different batches ball milling are improved.The ball mill of the elliposoidal of the utility model design
Cylinder can greatly shorten Ball-milling Time, improve the efficiency of ball milling, and the slurry centralized particle diameter after grinding can be improved
The quality of finished product.And under identical operating condition, ball milling barrel wear reduces 60%
The ball mill barrel of the elliposoidal of the utility model design and the ball mill of the prior art are utilized respectively to same batch
Secondary ferrite carry out it is finely divided, it is finely divided after slurry particle diameter distribution it is as shown in Figure 3.Solid line, which represents, in Fig. 3 utilizes this reality
With the particle diameter distribution of the slurry after novel ball mill barrel ball milling, after dotted line represents the ball mill ball milling using the prior art
The particle diameter distribution of slurry.From grain size distribution as can be seen that utilizing the ball mill barrel of the utility model and the ball of the prior art
The raw material of grinding machine ball milling same batch, is milled to same particle size, the slurry after the ball mill barrel of the utility model carries out ball milling
Material has narrower particle diameter distribution.
The above is only the preferred embodiment of the utility model, not imposes any restrictions to the utility model, all
According to the utility model technical spirit any simple modification, change and equivalent structure transformation to the above embodiments, still
Belong to the protection scope of technical solutions of the utility model.
Claims (7)
1. a kind of elliposoidal ball mill barrel, it is characterised in that: be provided on the inner wall of the cylinder (1) several equal along its inner wall
The reinforcing rib (2) of even distribution, the reinforcing rib extend to the other end from one end of elliposoidal cylinder polar axis, and the reinforcing rib is close
The surface of inner barrel has arc-shaped recess (3).
2. a kind of elliposoidal ball mill barrel according to claim 1, it is characterised in that: two polar radius of the cylinder
Ratio with equatorial radius is 1.2 ~ 3:1.2 ~ 3:1.
3. a kind of elliposoidal ball mill barrel according to claim 2, it is characterised in that: two polar radius of the cylinder
Ratio with equatorial radius is 1.5 ~ 2:1.5 ~ 2:1.
4. a kind of elliposoidal ball mill barrel according to claim 1 or 2 or 3, it is characterised in that: the reinforcing rib is length
The ratio of cube shape, the width of reinforcing rib and longer polar radius is 1:30 ~ 80, the height of reinforcing rib and longer polar radius
Ratio is 1:20 ~ 60.
5. a kind of elliposoidal ball mill barrel according to claim 4, it is characterised in that: the width of the reinforcing rib with compared with
The ratio of long polar radius is 1:40 ~ 60, and the ratio of the height of reinforcing rib and longer polar radius is 1:30 ~ 50.
6. a kind of elliposoidal ball mill barrel according to claim 5, it is characterised in that: the quantity of the reinforcing rib be 8 ~
13.
7. a kind of elliposoidal ball mill barrel according to claim 1, it is characterised in that: the arc-shaped surface of the recess
Central angle is 60 ~ 180 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821477895.8U CN208960034U (en) | 2018-09-10 | 2018-09-10 | A kind of elliposoidal ball mill barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821477895.8U CN208960034U (en) | 2018-09-10 | 2018-09-10 | A kind of elliposoidal ball mill barrel |
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| Publication Number | Publication Date |
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| CN208960034U true CN208960034U (en) | 2019-06-11 |
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| CN201821477895.8U Active CN208960034U (en) | 2018-09-10 | 2018-09-10 | A kind of elliposoidal ball mill barrel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108906242A (en) * | 2018-09-10 | 2018-11-30 | 横店集团东磁股份有限公司 | A kind of method of elliposoidal ball mill barrel and its finely divided permanent-magnet ferrite |
| CN110465381A (en) * | 2019-07-02 | 2019-11-19 | 苏州市吴中区固体废弃物处理有限公司 | A kind of solid waste Cold pretreatment device and technique |
| CN111389523A (en) * | 2020-04-02 | 2020-07-10 | 湖南农业大学 | Ball-milling tank with inner cavity of ellipsoid-like body |
-
2018
- 2018-09-10 CN CN201821477895.8U patent/CN208960034U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108906242A (en) * | 2018-09-10 | 2018-11-30 | 横店集团东磁股份有限公司 | A kind of method of elliposoidal ball mill barrel and its finely divided permanent-magnet ferrite |
| CN110465381A (en) * | 2019-07-02 | 2019-11-19 | 苏州市吴中区固体废弃物处理有限公司 | A kind of solid waste Cold pretreatment device and technique |
| CN111389523A (en) * | 2020-04-02 | 2020-07-10 | 湖南农业大学 | Ball-milling tank with inner cavity of ellipsoid-like body |
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