CN2923024Y - Covering ball mill - Google Patents
Covering ball mill Download PDFInfo
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- CN2923024Y CN2923024Y CN 200620014066 CN200620014066U CN2923024Y CN 2923024 Y CN2923024 Y CN 2923024Y CN 200620014066 CN200620014066 CN 200620014066 CN 200620014066 U CN200620014066 U CN 200620014066U CN 2923024 Y CN2923024 Y CN 2923024Y
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- millstone
- coating
- grinding machine
- ball grinding
- coated ball
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Abstract
The utility model relates to a coating ball mill, comprising a lower cover, an upper cover which is connected with the lower cover and a rotary mechanism arranged in the lower cover. A millstone which can adjust the clearance is arranged between the upper and lower covers. The millstone comprises an upper grinding disc which is arranged in the upper cover, a lower grinding disc which is arranged in the lower cover and a heating body which is arranged in the lower grinding disc. The design of clearance adjustable millstone between the upper and lower covers and the natural graphite particle and coating agent arranged in the lower grinding disc can achieve automatic coating and ball milling process in heating conditions to coat an even powder coating on the natural graphite particle under the application of the grinding ball and the rotating centrifugal force. In addition, the cross millrace teeth on the lower grinding disc surface can help to avoid improper crushing on the surface of the natural graphite particle during the coating process. The millstone can produce the second particle to improve the recycle performance of the lithium battery. Further more, the utility model can improve the coating rate of the coating graphite particle.
Description
[technical field]
The utility model relates to a kind of preparation facilities of lithium ion battery negative material, relates in particular to a kind of coated ball grinding machine that lithium ion battery negative material is carried out surface coating and ball-milling treatment.
[background technology]
Along with society constantly advances and improves, the green energy resource problem of a newborn generation has become the focus that industrial circle and academia fall over each other to study.Because of lithium ion battery says that than the NI-G Ni-MH battery having many good characteristics is extensively adopted by business circles.Negative material in existing lithium ion battery is mainly based on material with carbon element, for example graphite, coke and RESEARCH OF PYROCARBON etc.Native graphite is lower because of cost, possesses higher embedding lithium ability, and becomes the main flow selection of the negative material of lithium ion battery; But, low because of the tap density of native graphite, surface area is high, make this graphite material be not suitable for directly doing negative material and use.
If the natural graphite negative electrode material through modification does not directly use as the negative material of lithium battery, irreversible capacity loss is higher first to make it, and problems such as the generation solvent embeds altogether easily in circulation, and the while also causes cycle efficieny to descend easily, capacity attenuation is fast occur.Therefore, after the required process of native graphite is manually carried out the modification processing to this graphite surface, just can be used as the negative material of lithium battery.
Coat through being usually used in that graphite surface is implemented modification in the prior art, for example the patent No. is that passing through of being disclosed in the Japanese documentation of the JP10294111 method that heat mixes is with pitch-coating charcoal or graphite powder, the patent No. is the method with the graphite covered by asphalt of middle phase that is disclosed in the Japanese documentation of JP2000348720, the patent No. be disclosed in the Japanese documentation of JP2000203817 with the methods such as surface coating of amorphous charcoal to graphite.Above-mentioned basic process to graphite surface enforcement method for modified cladding is: under the effect of corresponding certain organic solvent, the covering of certain organic matter or polymer is mixed with native graphite, after organic solvent volatilizees under the condition to be heated, make covering stay the native graphite surface cure and form the effect of coating, the material after will coating then obtains final modified product through high-temperature process again through after being broken into powder.In above-mentioned method for modified cladding, relate to coating basically, solidify and broken three technical process, native graphite after the described coating is bonded to piece easily in solidification process, make the grain structure state of clad of this bonding back native graphite in shattering process, be damaged easily, shape becomes irregular granular but not spherical, thereby this granular generation that often is attended by the chip particle of graphite has increased the specific area of material.
In order to address the aforementioned drawbacks, a kind of stirring granulating machine appears subsequently, and the principle of this stirring granulating machine mainly is to mix to object being treated with from the binding agent that loam cake sprays into by two stirring blades up and down to stir, pulverize.But; because described stirring blade is abundant inadequately to the graphite founding; cause native graphite surface coated inhomogeneous; simultaneously; owing to this stirring granulating machine is by the stirring blade that rotates at a high speed the object being treated particle to be shredded the action that realizes separating natural graphite, make the surface state and the structure of the natural graphite particles together that sticks to each other after coating be broken easily.
[utility model content]
In order to solve the above-mentioned technical solution problem of wanting, the utility model provides a kind of not only can avoid when native graphite is carried out coating modification and the coating inequality that causes, broken improper, but also can help improving the coating of coating efficiency and the coated ball grinding machine of ball milling one.
For solving the problems of the technologies described above, technical scheme that the utility model adopts is: a kind of coated ball grinding machine, it comprises lower cover, is connected in the upper cover body on the lower cover and places the interior rotating mechanism of lower cover, between upper and lower cover body, be provided with the mill of adjustable clearance, this mill comprises the upper millstone that places in the upper cover body, places the lower millstone in the lower cover, the calandria that is provided with in lower millstone.
According to above-mentioned major technique feature, described upper millstone is made of the upper millstone main body, center on this upper millstone main body top extends outward the charging cavity, this charging cavity and upper millstone main body are one, be provided with annular upper millstone face in the bottom of upper millstone main body, in the middle of this upper millstone face, form a cavity.
According to above-mentioned major technique feature, between described upper millstone and upper cover body, form a gap cavity, in this gap cavity, be provided with spring, between this spring and charging cavity, be provided with the rotation nut.
According to above-mentioned major technique feature, on upper cover body, offer ventilation and filter mouth.
According to above-mentioned major technique feature, described lower millstone has the holder disk, and the arranged outside on this holder disk top has the lower millstone face of annular, forms the lower millstone connector to upper process in the middle of the lower millstone face, and this lower millstone connector and lower millstone face are one.
According to above-mentioned major technique feature, rotating mechanism is housed in lower cover, described rotating mechanism comprises the connecting rod that is connected with the lower millstone connector, the bearing that is connected in the roller that has motor of this connecting rod other end and places this connecting rod centre.
According to above-mentioned major technique feature, the lower millstone flour milling is provided with arcuate structure, and this arcuate structure comprises two guide tables and the diagonal cross slot grinding between two guide tables at the upper and lower edge that places the lower millstone flour milling.
According to above-mentioned major technique feature, the height of described diagonal cross slot grinding is between 0.05-2mm, and the incline direction of diagonal cross slot grinding and the diametric(al) of mill are 0～miter angle, and the girth of two guide tables is isometric.
According to above-mentioned major technique feature, in the charging cavity, be provided with charging hole, extend two shunting ring gates respectively in this charging hole end, this shunting ring gate and charging hole are interconnected.
According to above-mentioned major technique feature, be provided with size scale in the outer surface vertical direction of feed cavity.
Compare as can be known with stirring granulating machine in the prior art; the beneficial effects of the utility model are: because of last; the mill of one adjustable clearance is set between the lower cover; make that graphite granule can be at the covering that fills of high speed rotation; automatically realize whole coating and ball-milling technology process in the lower millstone of the mixed liquor of organic solvent and required coated powder material continuously; make to coat one deck homogeneous substance under the effect place natural stone abrasive particle surface in the mill and rotary centrifugal force whole, coat and evenly and simultaneously keep the effect of sphericity preferably thereby reach natural stone mill surface at the grinding ball.Intersect the slot grinding tooth because of the surface at lower millstone is provided with again, thereby can avoid the surface of described natural stone mill when coating modification, to produce fragmentation phenomenon generation improperly.In addition, because above-mentioned mill can be produced the second particle that helps improving the lithium battery cycle performance, make can reduce volumetric expansion that lithium ion causes the impact of material in reciprocal charge and discharge process or even destroy, thereby improve the cyclical stability of coating modification material, promptly can reach the effect of the clad ratio of the stone mill particle that raising coated.
Description of drawings
Fig. 1 is the structural representation of a kind of coated ball grinding machine in the utility model;
Fig. 2 is the structural representation of upper millstone and loam cake in the utility model;
Fig. 3 is the structural representation of the charge door of upper millstone in the utility model;
Fig. 4 is the structural representation of lower millstone in the utility model;
Fig. 5 is the schematic top plan view of lower millstone in the utility model;
Fig. 6 is the partial structurtes schematic diagram of lower millstone face in the utility model;
Fig. 7 is the schematic cross-section of lower millstone face in the utility model;
Fig. 8 is that native graphite coats the preceding schematic diagram of ball-milling treatment in the utility model;
Fig. 9 is that graphite coats processing back schematic diagram in the utility model;
Figure 10 is the schematic diagram that a plurality of graphite granules form second particle in the utility model;
The specific embodiment
Please refer to shown in Fig. 1 to 7, the utility model illustrates a kind of coated ball grinding machine in conjunction with embodiment, it comprises lower cover 1, upper cover body 2, place in the lower cover 1 rotating mechanism and between upper and lower cover body 2,1 mill of adjustable clearance, this mill comprises the upper millstone that places in the upper cover body 2, places the lower millstone in the lower cover 1, the calandria 57 that is provided with in lower millstone.
Upper cover body 2 is and has the cylindric of ladder bead, offers screwed hole respectively in the both sides of the ladder bead that is positioned at upper cover body 2 bottoms, offers ventilation on upper cover body 2 tops and filters mouth 21, helps the air pressure balance that keeps coated ball grinding machine cavity interior.Center position on these upper cover body 2 tops offers transitional pore.
Upper millstone is made of upper millstone main body 40, center on this upper millstone main body 40 extends outward charging cavity 41, it is one that this charging cavity 41 holds with upper millstone main body 40, annular upper millstone face 42 is set in the bottom of upper millstone main body 40, in the middle of this upper millstone face 42, forms a frustum batch mixing chamber 43.In charging cavity 41, be provided with charging hole 411, extend shunting ring gate 412 respectively in these charging hole 411 ends, this shunting ring gate 412 is interconnected with charging hole 411, help mixing material evenly is sprinkled in the lower millstone, and avoid producing the phenomenon that local clad material material is piled up.Outer surface vertical direction in feed cavity 41 is provided with size scale, is used to refer to the distance between the upper and lower mill; Maximum is moved about apart from being vertical direction 10mm, helps user's clearance distance between the upper and lower mill of control flexibly.
Between described upper millstone and upper cover body 2, form a gap cavity, in this gap cavity, be provided with spring 6, this spring 6 can be compression spring or extension spring, it can overcome the centrifugal force that axial deflection that mill causes produces in grinding process, make upper millstone can retainer shaft to stable, thereby make the coating modification material stressed even in grinding process, make by the shape of product homogeneous behind the coating ball milling.Between described spring 6 and charging cavity 41, be provided with rotation nut 7, help upward clearance distance size between the lower millstone of adjusting and control.
Lower cover 1 is and has the hollow cylindric of ladder bead, in lower cover 1 inside lower millstone is housed, be provided with bolt hole on the ladder bead on the top that is positioned at this lower cover 1, upper and lower cover body 2,1 is fixing together by screwed hole and bolt hole that bolt 9 passes on the upper and lower cover body 2,1.
Described lower millstone has holder disk 50, arranged outside on these holder disk 50 tops has the lower millstone face 51 of annular, in the middle of lower millstone face 51, form lower millstone connector 52 to upper process one circular cone shape, low round table-like around high in the middle of this lower millstone connector 52 is, this lower millstone connector 52 holds with lower millstone face 51 and is one.Lower millstone face 51 is provided with arcuate structure, and this arcuate structure comprises two guide tables 53,54, the diagonal cross slot grinding 56 between two guide tables 53,54 at the upper and lower edge that places lower millstone face 51.The height of described diagonal cross slot grinding 56 is between 0.05--2mm, and the incline direction of diagonal cross slot grinding 56 and the diametric(al) of mill are 0～miter angle, and the annular width of two guide tables is isometric.Because of the diagonal cross slot grinding 56 that is provided with at lower millstone face 51 helps making powder body material to be easier to be incorporated in the grinding face, thereby make the powder in the process of mill high speed rotating progressively introduce and be assigned in each grind reliefs, avoid the packing phenomenon of a large amount of powders in the partly groove to take place.Simultaneously, also can be so that the movement velocity and the ball milling degree of control powder particle in grinding process.Place lower millstone calandria 57; Make to be opposite to that covering material in the lower millstone is subjected to the heated volatile solvent simultaneously in grinding process and final the coating is distributed in the native graphite surface, to reach encapsulated material fully solidifies coating in grinding process effect.
Below lower cover, be provided with collecting tank, so that the material behind cleaning ball milling coating machine and the collection coating ball milling.In this lower millstone rotating mechanism is housed, described rotating mechanism comprises the connecting rod 31 that is connected with lower millstone connector 52, the bearing 33 that is connected in the roller that has motor 32 of these connecting rod 31 other ends and is connected in these connecting rod 31 centres.Described upper and lower mill is all for by alundum (Al (Al
2O
3) or copper-nickel alloy (diamond) or carborundum (SiC) or silicon nitride (Si
3N
4) be warmed to 250 degrees centigrade of Wear-resistant, high-temperature resistant materials that form.
During assembling, upper millstone places upper cover body 2 inside, make the feed cavity 41 on the upper millstone pass the transitional pore of upper cover body 2, and outstanding upper cover body 2 tops one segment distance, rotation nut 7 is set on this upper cover body 2, and this rotation nut 7 is mainly used in the clearance distance between the upper and lower mill of regulating vertical direction.Feed cavity 41 on upper millstone and the upper millstone forms a clearance space with upper cover body 2, and spring 6 is set in this clearance space.Inside at lower cover 1 is provided with lower millstone, and connecting rod 31 1 ends and lower millstone connector 52 flexibly connect, and the other end of this connecting rod 31 is movably connected on the roller 32 that has motor.When 32 rotations of driven by motor roller, this roller 32 drives lower millstones by connecting rod 31 and rotates at a high speed.
Please refer to shown in Fig. 8 to 10, the well-mixed dipping mixed liquor of the split material three of covering, organic solvent and required coating is injected from the charging hole 411 in the charging cavity 41, and this dipping mixed liquor flows into upper millstone main body 40 through shunting ring gate 412 and forms in the cavity of gap with lower millstone connector 52.When the dipping mixed liquor flow to the underclearance cavity of lower millstone connector 52 formation, under the heat effect of the calandria 57 that places lower millstone inside, a part of organic solvent volatilized fast and makes covering remain in the powder surface of graphite granule.Simultaneously, rotate the centrifugal action that produces at a high speed owing to lower millstone, make lower millstone drive and be stained with the border movement of the graphite granule of coating material to lower millstone, the organic solvent of mixed solution further volatilizees and makes the surface of graphite granule coat one deck covering in motion process, some natural graphite particles that produce in this coating process are bonded to each other together mutually, when bonding above-mentioned natural graphite particles group along with action of centrifugal force under during through the upper millstone face 42 of upper millstone, the natural graphite particles group of the coating that mutual grinding that produces between the diagonal cross slot grinding 56 of lower millstone face 51 and the upper millstone face 42 of upper millstone and rotary centrifugal force effect and making bonds together is separated from each other and ball is whole simultaneously, make above-mentioned natural graphite particles group become the natural graphite particles of dispersion, and make this natural graphite particles surface texture closely and the character homogeneous, thereby the native graphite surface that reaches each dispersion coats evenly and simultaneously further ball integralization.
In addition, it is good that above-mentioned mill can make in making the coating modification treatment process process of producing native graphite that not only quilt coating natural stone abrasive particle obtains the coating situation, the product that sphericity is good, but also can produce the second particle (as shown in figure 10) that helps improving the lithium battery cycle performance, the mechanism of this second particle is that to recombine into be particle with having graphite granule non-directional that two or more different graphite linings arrange, make the astaticism of graphite granule lamella can reduce volumetric expansion even destruction that lithium ion causes the impact of material in reciprocal charge and discharge process, improve the cyclical stability of coating modification material.Can reach the covered effect of the stone mill particle that raising coated.
In sum; compare as can be known with stirring granulating machine in the prior art; the beneficial effects of the utility model are: because of last; lower cover 2; the mill of one adjustable clearance is set between 1; make that the stone mill particle can be at the covering that fills of high speed rotation; automatically realize whole coating and ball-milling technology process in the lower millstone of the mixed liquor of organic solvent and required coated powder material continuously; make to coat the layer of even clad under the effect place natural graphite particles surface in the mill and rotary centrifugal force whole, coat effect of uniform thereby reach the native graphite surface at the grinding ball.Again because of the surface at lower millstone is provided with diagonal cross slot grinding 56, thus can avoid the surface of described native graphite when coating modification, produce fragmentation improperly phenomenon take place.In addition, because above-mentioned mill can be produced the second particle that helps improving the lithium battery cycle performance, make can reduce volumetric expansion that lithium ion causes the impact of material in reciprocal charge and discharge process or even destroy, thereby improve the cyclical stability of coating modification material, promptly can reach the effect of the clad ratio of the graphite granule that raising coated.
Claims (10)
1, a kind of coated ball grinding machine, it comprises lower cover, is connected in the upper cover body on the lower cover and places the interior rotating mechanism of lower cover, it is characterized in that: the mill that between upper and lower cover body, is provided with adjustable clearance, this mill comprises the upper millstone that places in the upper cover body, places the lower millstone in the lower cover, is provided with calandria in lower millstone.
2, coated ball grinding machine as claimed in claim 1, it is characterized in that: described upper millstone is made of the upper millstone main body, center on this upper millstone main body top extends outward the charging cavity, this charging cavity and upper millstone main body are one, be provided with annular upper millstone face in the bottom of upper millstone main body, in the middle of this upper millstone face, form a cavity.
3, coated ball grinding machine as claimed in claim 1 is characterized in that: form a gap cavity between described upper millstone and upper cover body, be provided with spring in this gap cavity, be provided with the rotation nut between this spring and charging cavity.
4, coated ball grinding machine as claimed in claim 1 is characterized in that: offer ventilation and filter mouth on upper cover body.
5, coated ball grinding machine as claimed in claim 1, it is characterized in that: described lower millstone has the holder disk, arranged outside on this holder disk top has the lower millstone face of annular, forms the lower millstone connector to upper process in the middle of the lower millstone face, and this lower millstone connector and lower millstone face are one.
6, coated ball grinding machine as claimed in claim 1, it is characterized in that: in this lower cover rotating mechanism is housed, described rotating mechanism comprises the connecting rod that is connected with the lower millstone connector, the bearing that is connected in the roller that has motor of this connecting rod other end and places this connecting rod centre.
7, coated ball grinding machine as claimed in claim 5, it is characterized in that: the lower millstone face is provided with arcuate structure, and this arcuate structure comprises two guide tables and the diagonal cross slot grinding between two guide tables at the upper and lower edge that places the lower millstone face.
8, coated ball grinding machine as claimed in claim 7, it is characterized in that: the height of described diagonal cross slot grinding is between 0.05--2mm, the incline direction of diagonal cross slot grinding and the diametric(al) of mill are 0～miter angle, and the annular width of two guide tables is isometric.
9, as claim 2 or 3 described coated ball grinding machines, it is characterized in that: be provided with charging hole in the charging cavity, extend the shunting ring gate respectively in this charging hole end, this shunting ring gate and charging hole are interconnected.
10, coated ball grinding machine as claimed in claim 3 is characterized in that: the outer surface vertical direction in feed cavity is provided with size scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620014066 CN2923024Y (en) | 2006-05-19 | 2006-05-19 | Covering ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620014066 CN2923024Y (en) | 2006-05-19 | 2006-05-19 | Covering ball mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2923024Y true CN2923024Y (en) | 2007-07-18 |
Family
ID=38259446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620014066 Expired - Lifetime CN2923024Y (en) | 2006-05-19 | 2006-05-19 | Covering ball mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2923024Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495454A (en) * | 2013-09-29 | 2014-01-08 | 都江堰申都中药有限公司 | Traditional Chinese medicine pulverizing machine capable of conveniently removing residual materials |
| CN105062151A (en) * | 2015-09-06 | 2015-11-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Inorganic titanium dioxide surface treatment device and method |
| CN105555407A (en) * | 2013-04-05 | 2016-05-04 | 微冲击力米尔有限公司 | Device and method for ore-crushing with a spring device |
| CN107051649A (en) * | 2016-10-13 | 2017-08-18 | 常州大学 | A kind of crushing mill of anode material of lithium battery |
| CN108695511A (en) * | 2017-04-07 | 2018-10-23 | 王宏栋 | Lithium ion battery material surface coated with conductive layer and preparation method thereof |
| CN109718937A (en) * | 2017-10-31 | 2019-05-07 | 阿尔法（江苏）重工科技有限公司 | Coal pulverizer emery wheel |
| CN109718907A (en) * | 2017-10-31 | 2019-05-07 | 阿尔法（江苏）重工科技有限公司 | Emery wheel heating device |
| CN112169911A (en) * | 2019-07-03 | 2021-01-05 | 上海谷励智能设备有限公司 | Alpha infrared heating mill |
| CN112844610A (en) * | 2020-12-16 | 2021-05-28 | 蚌埠市鑫源机电设备有限公司 | Spinning grinding device with screening function |
| CN112844652A (en) * | 2021-01-06 | 2021-05-28 | 邵阳学院 | Horizontal powder rolling device for preparing core-shell structure powder |
-
2006
- 2006-05-19 CN CN 200620014066 patent/CN2923024Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105555407A (en) * | 2013-04-05 | 2016-05-04 | 微冲击力米尔有限公司 | Device and method for ore-crushing with a spring device |
| CN105555407B (en) * | 2013-04-05 | 2018-02-02 | 微冲击力米尔有限公司 | The apparatus and method for powder ore with spring assembly |
| CN103495454A (en) * | 2013-09-29 | 2014-01-08 | 都江堰申都中药有限公司 | Traditional Chinese medicine pulverizing machine capable of conveniently removing residual materials |
| CN105062151A (en) * | 2015-09-06 | 2015-11-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Inorganic titanium dioxide surface treatment device and method |
| CN107051649A (en) * | 2016-10-13 | 2017-08-18 | 常州大学 | A kind of crushing mill of anode material of lithium battery |
| CN108695511A (en) * | 2017-04-07 | 2018-10-23 | 王宏栋 | Lithium ion battery material surface coated with conductive layer and preparation method thereof |
| CN108695511B (en) * | 2017-04-07 | 2021-04-02 | 王宏栋 | Lithium ion battery material surface coating conductive layer and preparation method thereof |
| CN109718937A (en) * | 2017-10-31 | 2019-05-07 | 阿尔法（江苏）重工科技有限公司 | Coal pulverizer emery wheel |
| CN109718907A (en) * | 2017-10-31 | 2019-05-07 | 阿尔法（江苏）重工科技有限公司 | Emery wheel heating device |
| CN112169911A (en) * | 2019-07-03 | 2021-01-05 | 上海谷励智能设备有限公司 | Alpha infrared heating mill |
| CN112844610A (en) * | 2020-12-16 | 2021-05-28 | 蚌埠市鑫源机电设备有限公司 | Spinning grinding device with screening function |
| CN112844652A (en) * | 2021-01-06 | 2021-05-28 | 邵阳学院 | Horizontal powder rolling device for preparing core-shell structure powder |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070718 |
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| EXPY | Termination of patent right or utility model |