CN106345352B - A kind of rotary graphene slurry preparation system and preparation method thereof - Google Patents
A kind of rotary graphene slurry preparation system and preparation method thereof Download PDFInfo
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- CN106345352B CN106345352B CN201610772146.7A CN201610772146A CN106345352B CN 106345352 B CN106345352 B CN 106345352B CN 201610772146 A CN201610772146 A CN 201610772146A CN 106345352 B CN106345352 B CN 106345352B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/23—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis
- B01F27/232—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with two or more rotation axes
- B01F27/2323—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with two or more rotation axes with perpendicular axes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/95—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis
- B01F27/951—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis with at least one stirrer mounted on the sun axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
- B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
- B01F33/83613—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by grinding or milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/2204—Mixing chemical components in generals in order to improve chemical treatment or reactions, independently from the specific application
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention discloses a kind of rotary graphene slurry preparation systems and preparation method thereof, including agitating device, sand mill and ball mill；The discharge port of agitating device is connected with the feed inlet of sand mill, and the discharge port of sand mill is connected with the feed inlet of ball mill；Agitating device includes mixing chamber, driving assembly and mixing component, and mixing component is installed in mixing chamber, and driving assembly provides power for mixing component, and mixing component includes agitating shaft I, agitating shaft II and paddle.Compared with prior art, the beneficial effects of the present invention are: when agitating shaft II rotates, paddle rotates on longitudinal surface, when agitating shaft I rotates, paddle is stirred by shaft 360 degree rotation of the longitudinal axis of agitating shaft I, more comprehensively, stirring is more thorough for mixing direction, is conducive to powder material and solvent is uniformly mixed.
Description
Technical field
The invention belongs to graphene production field, it is related to a kind of rotary graphene slurry preparation system and its preparation side
Method.
Background technique
The equipment of existing reply high viscosity high solids content graphene slurry dispersion is combined when preparing graphene slurry, will
Graphene powder is put into solvent, and due to graphene powder large specific surface area, absorbency is strong, has graphene slurry not substantially
Mobility, conventional stirring and high speed shear mode are difficult to be mixed uniformly, and slurry solid content is caused not have consistency.For
Guarantee graphene slurry is uniformly dispersed, and can only generally reduce slurry solid content and guarantee its mobility, considerably increase makes in this way
With the solvent cost and energy consumption for drying of side.
In the prior art, the equipment for producing highly viscous slurry includes stirred tank and sand mill.Its production technology includes following
Step:
1, ingredient.A certain proportion of powder raw material and solvent are weighed by technique requirement, the raw material weighed up is poured into stirred tank
It is interior.
2, it premixes.The stirring motor of stirred tank is opened, is completely dissolved in powder raw material in solvent.It is seen at the end of premix
Solution situation is examined, solution surface is to dissolve completely without obvious bulk object.
3, disperse.The discharge port of stirred tank connects the diaphragm pump of sand mill, the charging of the discharge port and stirred tank of sand mill
Mouth connects.Solution is pumped into sand mill by the diaphragm of sand mill and carries out sand milling dispersion, and circulation, which is sanded, repeatedly can be obtained slurry.
And the dispersion efficiency of conventional high speed shear mode is low, and dispersion effect is bad.Have the disadvantages that 1. pickling oxygen
Graphite alkene, Gao Bibiao graphene powder dispersion difficulty is big, and convention stir, high speed shear mode can not be put into graphene powder
Effective dispersion mixing is carried out after in solvent, slurry is uneven.2. height can not do solid content than table graphene slurry high.3. graphite
Alkene slurry dispersion efficiency is low.
Chinese patent discloses a kind of highly viscous slurry preparation system for caching bucket application No. is 201420445230.4,
It is characterized in that: include that caching bucket, sand mill and stirred tank, the feed end of the diaphragm pump of the sand mill are equipped with three-way valve,
Two charging ports of the three-way valve are connected with the discharge port of the discharge port of the caching bucket and the stirred tank respectively,
The feed inlet of the caching bucket is connected with the discharge port of the sand mill.The disadvantage is that: stirred tank structure therein is very simple,
The ladle body of stirred tank is cylinder, and slurry is easy to stick in bucket wall, causes to be lost；It is provided with stirrer paddle in stirred tank, is easy to make
It is sticked on blade at slurry, reduces production efficiency；Stirred tank inner wall is stainless steel material, and slurry is also be easy to cause to stick above,
It is not easy to flow.
Chinese patent, application number 201520623513.8 disclose a kind of reply high viscosity high solids content graphene slurry
The equipment of dispersion combines, it is characterized in that: including ball mill, the first transfer kettle, sand mill and the second transfer kettle, the ball mill
Discharge port connects the feed inlet of the first transfer kettle by first pipe, and the discharge port of the first transfer kettle passes through the second pipe
Road connects the feed inlet of the sand mill, and the discharge port of the sand mill passes through the charging of third pipeline and the second transfer kettle
Mouth connection, the discharge port of the second transfer kettle connect the feed inlet of the ball mill by the 4th pipeline.It is stirred due to existing
The mixing effect for mixing kettle is bad, causes to need multiple ball milling and sand milling, waste of energy, production efficiency in subsequent dispersion step
It is low.
Summary of the invention
Problem to be solved of the present invention is in view of the above shortcomings of the prior art, and to provide a kind of rotary graphene slurry
Expect preparation system and preparation method thereof.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of rotary graphene slurry preparation system, including agitating device, sand mill and ball mill；Agitating device goes out
Material mouth is connected with the feed inlet of sand mill, and the discharge port of sand mill is connected with the feed inlet of ball mill；
Agitating device includes mixing chamber, driving assembly and mixing component, and mixing component is installed in mixing chamber, driving assembly
Power is provided for mixing component, mixing chamber is split settings, including upper semi-circle, annular waist circle and lower half circle, and annular waist circle is living
It is dynamic to be connected between upper semi-circle and lower half circle, spheroidal is collectively constituted, driving assembly includes motor I and motor II, mixing component
Including agitating shaft I, agitating shaft II and paddle, agitating shaft I is movably connected in the diameter shaft of annular waist circle, and the one of agitating shaft I
The power output axis connection at end and motor I, motor I are connected firmly with annular waist circle, and one end of agitating shaft II is vertically connected at agitating shaft I
Midpoint, be flexibly connected between agitating shaft II and agitating shaft I by bearing, bearing is socketed on agitating shaft I, agitating shaft II
The other end is flexibly connected with upper semi-circle, and upper semi-circle is equipped with motor II, and the power output shaft of motor II is another with agitating shaft II
One end connection, agitating shaft I are equipped with the paddle of comb teeth-shaped, and the shape of the free end of paddle is mutually fitted with the radian of lower half circle
Match, be not provided with paddle on agitating shaft I with II corresponding position of agitating shaft, agitating shaft I is hollow structure, is flexibly connected in hollow cavity
There is screw rod, screw rod is driven by motor I, is passed through shaft per a piece of paddle and is flexibly connected with agitating shaft I, shaft rod upper sleeve connects tiltedly
Gear, helical gear and screw rod engaged transmission, the upper semi-circle of mixing chamber is equipped with the storage tank for storing powder material and at least
Equipped with 1 powder jet, storage tank is connect with powder jet by pipeline.
Upper semi-circle is equipped with solvent feeding port, and the bottom of lower half circle is equipped with discharge port.
Anti-stick coating is coated on mixing chamber inner wall and mixing component.
Anti-stick coating is teflon material.
Upper semi-circle is equipped with observation window.
The preparation method of rotary graphene slurry preparation system, comprising the following steps:
Step 1: preparing powder material and solvent, powder material is put into storage tank, solvent is put into mixing chamber；
Step 2: powder material is put into mixing chamber by powder jet；
Step 3: motor II starts, motor II drives agitating shaft II to rotate, and agitating shaft II drives agitating shaft I to rotate horizontally,
Annular waist circle follows agitating shaft I to rotate horizontally and rotate, and paddle stirs under I horizontal rotation of agitating shaft effect along longitudinal surface rotation
It mixes；
Step 4: motor I starts, motor I drives agitating shaft I to rotate, and agitating shaft I drives paddle using its longitudinal axis as shaft
360 degree rotation stirring, motor I drive the screw rod in agitating shaft I, and screw rod drives the nut on the shaft engaged, shaft band
Paddle is moved using shaft as axis 360 degree rotation；
Step 5: repeating step 2 to step 4 until powder material and stirring solvent and being uniformly mixed；
It being sanded Step 6: the slurry being stirred enters sand mill, the slurry being sanded enters ball mill and carries out ball milling,
It discharges after the completion of ball milling.
Compared with prior art, the beneficial effects of the present invention are:
(1) agitating shaft I is vertically arranged with agitating shaft II, and agitating shaft I is driven by motor I, and agitating shaft II is driven by motor II,
Paddle is set on agitating shaft I, and motor I is connected firmly with annular waist circle, and when agitating shaft II rotates, paddle rotates on longitudinal surface,
When agitating shaft I rotates, paddle is stirred by shaft 360 degree rotation of the longitudinal axis of agitating shaft I, and more comprehensively, stirring is more for mixing direction
Add thoroughly, is conducive to powder material and solvent is uniformly mixed.
(2) powder material is added by several times using storage tank and powder jet, be conducive to powder material and solvent is uniformly mixed.
(3) mixing chamber is split settings, including upper semi-circle, annular waist circle and lower half circle, annular waist circle are movably connected on
Between upper semi-circle and lower half circle, when agitating shaft II rotates, agitating shaft I and annular waist circle and then rotate together, structure innovation.
(4) motor I drives the screw rod in agitating shaft I, and screw rod drives the nut on the shaft engaged, and shaft drive is stirred
Leaf is mixed using shaft as axis 360 degree rotation, stirring orientation is more comprehensive, is conducive to fusion.
(5) what the graphene after stirring, sand milling and ball milling dispersed in the slurry is more uniform, is conducive to improve containing solid
Amount, and it is more efficient, and energy consumption is lower.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of rotary graphene slurry preparation system of the invention；
Fig. 2 is the structural schematic diagram of agitating device.
Wherein, 1- upper semi-circle, 2- annular waist circle, 3- lower half circle, 4- motor I, 5- motor II, 6- agitating shaft I, 7- agitating shaft
II, 8- paddle, 9- storage tank, 10- powder jet, 11- shaft, 13- sand mill, 14- ball mill.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
As shown in Figure 1, a kind of rotary graphene slurry preparation system, including agitating device, sand mill and ball mill；It stirs
The discharge port for mixing device is connected with the feed inlet of sand mill, and the discharge port of sand mill is connected with the feed inlet of ball mill；
Agitating device includes mixing chamber, driving assembly and mixing component, and mixing component is installed in mixing chamber, driving assembly
Power is provided for mixing component, mixing chamber is split settings, including upper semi-circle, annular waist circle and lower half circle, and annular waist circle is living
It is dynamic to be connected between upper semi-circle and lower half circle, spheroidal is collectively constituted, driving assembly includes motor I and motor II, mixing component
Including agitating shaft I, agitating shaft II and paddle, agitating shaft I is movably connected in the diameter shaft of annular waist circle, and the one of agitating shaft I
The power output axis connection at end and motor I, motor I are connected firmly with annular waist circle, and one end of agitating shaft II is vertically connected at agitating shaft I
Midpoint, be flexibly connected between agitating shaft II and agitating shaft I by bearing, bearing is socketed on agitating shaft I, agitating shaft II
The other end is flexibly connected with upper semi-circle, and upper semi-circle is equipped with motor II, and the power output shaft of motor II is another with agitating shaft II
One end connection, agitating shaft I are equipped with the paddle of comb teeth-shaped, and the shape of the free end of paddle is mutually fitted with the radian of lower half circle
Match, be not provided with paddle on agitating shaft I with II corresponding position of agitating shaft, agitating shaft I is hollow structure, is flexibly connected in hollow cavity
There is screw rod, screw rod is driven by motor I, is passed through shaft per a piece of paddle and is flexibly connected with agitating shaft I, shaft rod upper sleeve connects tiltedly
Gear, helical gear and screw rod engaged transmission, the upper semi-circle of mixing chamber is equipped with the storage tank for storing powder material and at least
Equipped with 1 powder jet, storage tank is connect with powder jet by pipeline.
Upper semi-circle is equipped with solvent feeding port, and the bottom of lower half circle is equipped with discharge port.
Anti-stick coating is coated on mixing chamber inner wall and mixing component.
Anti-stick coating is teflon material.
Upper semi-circle is equipped with observation window.
The preparation method of rotary graphene slurry preparation system, comprising the following steps:
Step 1: preparing powder material and solvent, powder material is put into storage tank, solvent is put into mixing chamber；
Step 2: powder material is put into mixing chamber by powder jet；
Step 3: motor II starts, motor II drives agitating shaft II to rotate, and agitating shaft II drives agitating shaft I to rotate horizontally,
Annular waist circle follows agitating shaft I to rotate horizontally and rotate, and paddle stirs under I horizontal rotation of agitating shaft effect along longitudinal surface rotation
It mixes；
Step 4: motor I starts, motor I drives agitating shaft I to rotate, and agitating shaft I drives paddle using its longitudinal axis as shaft
360 degree rotation stirring, motor I drive the screw rod in agitating shaft I, and screw rod drives the nut on the shaft engaged, shaft band
Paddle is moved using shaft as axis 360 degree rotation；
Step 5: repeating step 2 to step 4 until powder material and stirring solvent and being uniformly mixed；
It being sanded Step 6: the slurry being stirred enters sand mill, the slurry being sanded enters ball mill and carries out ball milling,
It discharges after the completion of ball milling.
Compared with prior art, the beneficial effects of the present invention are:
(1) agitating shaft I is vertically arranged with agitating shaft II, and agitating shaft I is driven by motor I, and agitating shaft II is driven by motor II,
Paddle is set on agitating shaft I, and motor I is connected firmly with annular waist circle, and when agitating shaft II rotates, paddle rotates on longitudinal surface,
When agitating shaft I rotates, paddle is stirred by shaft 360 degree rotation of the longitudinal axis of agitating shaft I, and more comprehensively, stirring is more for mixing direction
Add thoroughly, is conducive to powder material and solvent is uniformly mixed.
(2) powder material is added by several times using storage tank and powder jet, be conducive to powder material and solvent is uniformly mixed.
(3) mixing chamber is split settings, including upper semi-circle, annular waist circle and lower half circle, annular waist circle are movably connected on
Between upper semi-circle and lower half circle, when agitating shaft II rotates, agitating shaft I and annular waist circle and then rotate together, structure innovation.
(4) motor I drives the screw rod in agitating shaft I, and screw rod drives the nut on the shaft engaged, and shaft drive is stirred
Leaf is mixed using shaft as axis 360 degree rotation, stirring orientation is more comprehensive, is conducive to fusion.
(5) what the graphene after stirring, sand milling and ball milling dispersed in the slurry is more uniform, is conducive to improve containing solid
Amount, and it is more efficient, and energy consumption is lower.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (3)
1. a kind of rotary graphene slurry preparation system, it is characterised in that: including agitating device, sand mill and ball mill；It stirs
The discharge port for mixing device is connected with the feed inlet of sand mill, and the discharge port of sand mill is connected with the feed inlet of ball mill；
Agitating device includes mixing chamber, driving assembly and mixing component, and mixing component is installed in mixing chamber, and driving assembly is to stir
It mixes component and power is provided, mixing chamber is split settings, including upper semi-circle, annular waist circle and lower half circle, and annular waist circle activity connects
It is connected between upper semi-circle and lower half circle, collectively constitutes spheroidal, driving assembly includes motor I and motor II, and mixing component includes
Agitating shaft I, agitating shaft II and paddle, agitating shaft I are movably connected in the diameter shaft of annular waist circle, one end of agitating shaft I with
The power output axis connection of motor I, motor I are connected firmly with annular waist circle, and one end of agitating shaft II is vertically connected in agitating shaft I
Point at, be flexibly connected between agitating shaft II and agitating shaft I by bearing, bearing is socketed on agitating shaft I, agitating shaft II it is another
End is flexibly connected with upper semi-circle, and upper semi-circle is equipped with motor II, the power output shaft of motor II and the other end of agitating shaft II
Connection, agitating shaft I are equipped with the paddle of comb teeth-shaped, and the shape of the free end of paddle is adapted with the radian of lower half circle, stirs
It mixes and is not provided with paddle on axis I with II corresponding position of agitating shaft, agitating shaft I is hollow structure, is connected with spiral shell in hollow cavity
Bar, screw rod are driven by motor I, are passed through shaft per a piece of paddle and are flexibly connected with agitating shaft I, shaft rod upper sleeve connects helical teeth
Wheel, helical gear and screw rod engaged transmission, the upper semi-circle of mixing chamber are equipped with the storage tank for storing powder material and at least set
There is 1 powder jet, storage tank is connect with powder jet by pipeline；
Upper semi-circle is equipped with solvent feeding port, and the bottom of lower half circle is equipped with discharge port；
Anti-stick coating is coated on mixing chamber inner wall and mixing component；
Upper semi-circle is equipped with observation window.
2. the rotary graphene slurry preparation system according to claim 1, it is characterised in that: anti-stick coating is Teflon
Imperial material.
3. the preparation method of rotary graphene slurry preparation system according to claim 1, it is characterised in that: including with
Lower step:
Step 1: preparing powder material and solvent, powder material is put into storage tank, solvent is put into mixing chamber；
Step 2: powder material is put into mixing chamber by powder jet；
Step 3: motor II starts, motor II drives agitating shaft II to rotate, and agitating shaft II drives agitating shaft I to rotate horizontally, annular
Waist circle follows agitating shaft I to rotate horizontally and rotate, paddle Stirring under I horizontal rotation of agitating shaft effect；
Step 4: motor I starts, motor I drives agitating shaft I to rotate, and the drive paddle of agitating shaft I is to turn with I longitudinal axis of agitating shaft
The stirring of axis 360 degree rotation, motor I drive the screw rod in agitating shaft I, and screw rod drives the nut on the shaft engaged, shaft
Drive paddle using shaft as axis 360 degree rotation；
Step 5: repeating step 2 to step 4 until powder material and stirring solvent and being uniformly mixed；
It is sanded Step 6: the slurry being stirred enters sand mill, the slurry being sanded enters ball mill and carries out ball milling, ball milling
It discharges after the completion.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610772146.7A CN106345352B (en) | 2016-08-31 | 2016-08-31 | A kind of rotary graphene slurry preparation system and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610772146.7A CN106345352B (en) | 2016-08-31 | 2016-08-31 | A kind of rotary graphene slurry preparation system and preparation method thereof |
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| CN106345352B true CN106345352B (en) | 2019-06-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107673329B (en) * | 2017-10-31 | 2020-01-17 | 南京旭羽睿材料科技有限公司 | Coating equipment for graphene slurry |
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| CN204952782U (en) * | 2015-06-23 | 2016-01-13 | 山东天振药业有限公司 | Powder animal remedy and feed mixing's automatic agitated vessel |
| CN205201804U (en) * | 2015-12-18 | 2016-05-04 | 中国建筑第七工程局有限公司 | Rotation type concrete mixer |
| CN105582844A (en) * | 2014-10-22 | 2016-05-18 | 黑龙江省康格尔科技有限公司 | Electric drive control mixing mechanical equipment |
| CN206538199U (en) * | 2016-08-31 | 2017-10-03 | 无锡东恒新能源科技有限公司 | A kind of rotary highly viscous slurry preparation system |
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- 2016-08-31 CN CN201610772146.7A patent/CN106345352B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5818013B2 (en) * | 2012-03-30 | 2015-11-18 | 三菱マテリアル株式会社 | Method for producing silica slurry |
| CN105582844A (en) * | 2014-10-22 | 2016-05-18 | 黑龙江省康格尔科技有限公司 | Electric drive control mixing mechanical equipment |
| CN204160627U (en) * | 2014-10-23 | 2015-02-18 | 梅州客都物业管理有限公司 | The multidirectional mixer of a kind of building |
| CN204952782U (en) * | 2015-06-23 | 2016-01-13 | 山东天振药业有限公司 | Powder animal remedy and feed mixing's automatic agitated vessel |
| CN205201804U (en) * | 2015-12-18 | 2016-05-04 | 中国建筑第七工程局有限公司 | Rotation type concrete mixer |
| CN206538199U (en) * | 2016-08-31 | 2017-10-03 | 无锡东恒新能源科技有限公司 | A kind of rotary highly viscous slurry preparation system |
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Denomination of invention: The invention relates to a rotary graphene slurry preparation system and a preparation method thereof Effective date of registration: 20220425 Granted publication date: 20190607 Pledgee: Bank of Jiangsu Wuxi branch Limited by Share Ltd. Huishan Pledgor: WUXI DONGHENG NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2022320010115 |
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