CN112934036A - Three-paddle mixing and stirring equipment - Google Patents
Three-paddle mixing and stirring equipment Download PDFInfo
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- CN112934036A CN112934036A CN202110160483.1A CN202110160483A CN112934036A CN 112934036 A CN112934036 A CN 112934036A CN 202110160483 A CN202110160483 A CN 202110160483A CN 112934036 A CN112934036 A CN 112934036A
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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
- B01F27/2322—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 parallel axes
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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
- B01F27/05—Stirrers
- B01F27/09—Stirrers characterised by the mounting of the stirrers with respect to the receptacle
- B01F27/091—Stirrers characterised by the mounting of the stirrers with respect to the receptacle with elements co-operating with receptacle wall or bottom, e.g. for scraping the receptacle wall
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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
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
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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
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
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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
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
- B01F27/922—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with two or more helices, e.g. with intermeshing helices
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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
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/93—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with rotary discs
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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
- B01F27/80—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
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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
- B01F27/80—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
- B01F27/953—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 using only helical stirrers
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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
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
- B01F35/12—Maintenance of mixers using mechanical means
- B01F35/123—Maintenance of mixers using mechanical means using scrapers for cleaning mixers
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention aims to provide three-paddle type mixing and stirring equipment, which comprises a transmission component and a stirring component which are in linkage connection, wherein the transmission component drives the stirring component to realize revolution and rotation, the stirring component comprises a first stirring shaft with a first stirring paddle, a second stirring shaft with a second stirring paddle and a third stirring shaft with a third stirring paddle, the first stirring paddle, the second stirring paddle and the third stirring paddle are all in spiral structures, the spiral angle from the top to the bottom of the first stirring paddle is 90 degrees, the center of the motion track of the first stirring paddle and the revolution center of the stirring component form a first straight line, the center of the motion track of the second stirring paddle and the revolution center of the stirring component form a second straight line, the center of the motion track of the third stirring paddle and the revolution center of the stirring component form a third straight line, the included angle formed by the first straight line and the second straight line is 88 degrees to 98 degrees, the second line and the third line form an angle of 88-98 deg. The three-paddle mixing and stirring equipment has the advantages of reasonable structure and good stirring effect.
Description
Technical Field
The present invention relates to a stirring apparatus, and more particularly, to a three-paddle mixing stirring apparatus for stirring a battery slurry.
Background
The battery slurry is the most critical factor influencing the battery quality in the whole battery pole piece preparation process. The battery slurry is formed by uniformly dispersing active substances, a binder and a conductive agent in a solvent through stirring, and belongs to a typical high-viscosity solid-liquid two-phase suspension system. If the battery slurry is not uniformly dispersed, serious agglomeration phenomenon exists, the electrochemical performance of the battery is influenced, if the conductive agent is not uniformly distributed, different electrochemical reactions can occur due to different conductivities at each position of the electrode in the charging and discharging processes, a more complex SEI film can be generated at the negative electrode, the reversible capacity is reduced, and the phenomenon of local overcharge and overdischarge is accompanied or lithium metal is possibly separated out, so that potential safety hazards are formed. If the binder is not uniformly distributed, the binding force among particles and between the particles and a current collector is too large or too small, the internal resistance of the electrode at the too small part is large, and even the material is dropped, so that the exertion of the whole battery capacity is finally influenced.
Whether the battery slurry is uniformly dispersed depends on the stirring dispersion effect of the stirring equipment. Generally speaking, higher linear velocities are accompanied by higher shear forces, and the linear velocities are higher in dependence on equipment, and stirring equipment on the market at present is usually between 0 and 30m/s, so as to allow customers to have more and better choices. Experiments prove that if the linear velocity of the stirring equipment exceeds 30m/s, the binder of the battery slurry is easy to break; if the linear velocity is less than 15m/s, it is difficult to achieve a good agitation effect on the battery paste.
The applicant has developed a stirring device with high linear velocity and good stirring effect, and the stirring structure of the stirring device is disclosed in the chinese patent application with patent number 201810016259.3, and the specific structure is as follows: the stirring device comprises a planetary motion gear set, more than two stirring paddles and stirring shafts, wherein the stirring shafts are in transmission connection with the planetary motion gear set, rotate around the centers of the planetary motion gear set and rotate around the axes of the central positions of the stirring shafts, and the lower ends of the stirring shafts are respectively connected with the stirring paddles; when two stirring shafts are arranged, the central point of the connecting line between the circle centers of the two stirring shafts is staggered with the center of the planetary motion gear set; when more than three stirring shafts are arranged, the center point of a plane enclosed by the circle centers of all the stirring shafts is staggered with the center of the planetary motion gear set.
After the equipment is developed and put into the market for use in a large quantity, the applicant finds that when more than two stirring shafts are arranged, the stirring paddles are arranged at different positions, and the stirring effect is also affected differently.
Disclosure of Invention
The invention aims to provide three-paddle mixing and stirring equipment which is reasonable in structure and good in stirring effect.
A three-paddle mixing and stirring device comprises a transmission component and a stirring component which are connected in a linkage way, wherein the transmission component drives the stirring component to realize revolution and autorotation, the stirring assembly comprises a first stirring shaft with a first stirring paddle, a second stirring shaft with a second stirring paddle and a third stirring shaft with a third stirring paddle, the first stirring paddle, the second stirring paddle and the third stirring paddle are all in spiral structures, and the spiral angle from the top to the bottom of the first stirring paddle and the second stirring paddle is 90 degrees, the center of the motion track of the first stirring paddle and the revolution center of the stirring assembly form a first straight line, the center of the motion track of the second stirring paddle and the revolution center of the stirring assembly form a second straight line, the center of the motion track of the third stirring paddle and the revolution center of the stirring assembly form a third straight line, the included angle formed by the first straight line and the second straight line is 88-98 degrees, and the included angle formed by the second straight line and the third straight line is 88-98 degrees.
By adopting the technical scheme, in the stirring process of the three stirring paddles, compared with the two traditional stirring paddles, the three stirring paddles are uninterruptedly provided with the multi-directional shearing surfaces from top to bottom along the rotating track direction of the stirring paddles, and the shearing surfaces are more in number, so that the stirring device has a stronger shearing effect and improves the stirring efficiency; the mutual shearing parts are always arranged between the first stirring paddle and the second stirring paddle and between the second stirring paddle and the third stirring paddle, and the battery slurry positioned at the mutual shearing parts is subjected to stronger multidirectional mechanical shearing force, so that fine powder agglomerates or solid particle agglomerates in the solution can be further scattered and homogenized to obtain enough fine solid particles, and the solid particles are uniformly distributed in the solution to achieve the effect of micro-ultra-fine dispersion, the comprehensive performance of the slurry is remarkably improved, and the finally obtained battery slurry has better granularity, fineness and viscosity, and the quality of the battery slurry is greatly improved.
The invention is further arranged that the angle formed by the first straight line and the second straight line is the same as the angle formed by the second straight line and the third straight line.
By adopting the technical scheme, the whole stirring assembly is more compact and reasonable in structure, so that the whole equipment can have more reasonable volume; in addition, because transmission assembly drives the stirring subassembly and realizes revolution and rotation, then first stirring rake, second stirring rake, third stirring rake receive the transmission power that comes from transmission assembly on the one hand at the stirring in-process, and on the other hand, three stirring rakes also can be to producing the boosting power each other, increase the shearing force, promote the stirring effect.
The invention is further arranged such that the first line forms an angle of 90-95 with the second line and the second line forms an angle of 90-95 with the third line.
Through the technical scheme, multiple tests of the applicant show that when the included angle formed by the first straight line and the second straight line and the included angle formed by the second straight line and the third straight line are 90-95 degrees, the first stirring paddle, the second stirring paddle and the third stirring paddle can be switched back and forth in two shearing states, the first state is that the first stirring paddle and the second stirring paddle are tangent to each other, the second state is that the first stirring paddle and the second stirring paddle and the third stirring paddle are tangent to each other, and the first stirring paddle and the third stirring paddle do not interfere with each other; the movement mode of the stirring paddle can generate the maximum shearing force and the maximum movement shearing space, the stirring effect is optimal, and the quality of battery slurry obtained by stirring is optimal.
The invention is further arranged in that the transmission assembly comprises a mounting base, a stirring driving motor and a central shaft which are connected in a linkage manner, the mounting base is axially fixed and circumferentially rotatably arranged on the rack 1, the central shaft, the first stirring shaft, the second stirring shaft and the third stirring shaft are all fixedly connected with the mounting base, a driving gear is fixedly sleeved on the surface of the central shaft, the driving gear is engaged with three driven gears, and the three driven gears are respectively connected with the first stirring shaft, the second stirring shaft and the third stirring shaft in a linkage manner.
Through adopting above-mentioned technical scheme, the transmission subassembly drives the stirring subassembly and realizes revolution and rotation, simple structure, overall arrangement are compact, and the stirring orbit of stirring subassembly covers more spaces in the storage bucket, and the stirring is more even, and the battery ground paste quality that obtains is better.
The invention is further provided that the stirring assembly further comprises a dispersion shaft and dispersion discs arranged on the surface of the dispersion shaft, the dispersion shaft is positioned on the first dispersion shaft between the first stirring shaft and the second stirring shaft, the second dispersion shaft is positioned between the second stirring shaft and the third stirring shaft, the third dispersion shaft is positioned between the second stirring shaft and the third stirring shaft, and the diameters of the dispersion discs on the surface of the third dispersion shaft are larger than the diameters of the dispersion discs of the first dispersion shaft and the diameters of the dispersion discs of the second dispersion shaft.
By adopting the technical scheme, the larger diameter of the dispersion disc brings higher linear velocity and stronger shearing force obtained by higher linear velocity operation, under the action of strong mechanical shearing force, fine powder agglomerates or solid particle agglomerates in the solution can be further scattered and homogenized to obtain enough fine solid particles which are uniformly distributed in the solution, so that the effect of microscopic ultrafine dispersion is achieved, the comprehensive performance of the slurry is remarkably improved, the finally obtained battery slurry has better granularity, fineness and viscosity, and the quality of the battery slurry is greatly improved; but it is not possible to increase the diameter of the dispersion disc in order to increase the linear speed, since this will affect the load capacity of the dispersion shaft, and also the load capacity and power requirements of the drive motor; the arrangement mode of the invention reasonably improves the linear speed of the stirring equipment, but does not generate negative influence on other parts, and improves the stirring effect of the battery slurry to the maximum.
The invention is further provided that the bottom of at least one of the first stirring paddle, the second stirring paddle and the third stirring paddle is provided with a scraping piece.
The invention is further provided with at least two scraping pieces which are respectively positioned at two sides of the bottom of the same stirring paddle.
Through adopting above-mentioned technical scheme, the setting of scraping the piece can realize that the stirring rake when storage bucket bottom stirring battery ground paste, adds the upset dynamics to the material of barrel head, makes the battery ground paste mix more evenly.
Drawings
FIG. 1 is a schematic view of the overall structure of a three-paddle mixing and stirring device;
FIG. 2 is a sectional view taken along line A-A of FIG. 1 with the transmission assembly in a home position;
FIG. 3 is an enlarged view of portion B of FIG. 2;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1 with the drive assembly in a rotated 90 state;
FIG. 5 is an enlarged view of section C of FIG. 4;
FIG. 6 is a schematic view of a partial structure of a three-paddle mixing and stirring apparatus;
FIG. 7 is a schematic diagram of the movement traces of the first stirring paddle, the second stirring paddle and the third stirring paddle when the first stirring shaft, the second stirring shaft and the third stirring shaft are distributed at 120 degrees;
FIG. 8 is a schematic diagram of the movement traces of the first stirring paddle, the second stirring paddle and the third stirring paddle when the first stirring shaft, the second stirring shaft and the third stirring shaft are distributed according to 93 degrees;
FIG. 9 is a top cross-cut state diagram of the first, second, and third paddles;
FIG. 10 is a diagram showing the mutual shearing state of the middle parts of a first stirring paddle, a second stirring paddle and a third stirring paddle;
FIG. 11 is a bottom cross-cut state diagram of the first, second, and third paddles;
FIG. 12 is a view showing the state of the first, second and third paddles sheared at the outer edge;
fig. 13 is a schematic structural view of the paddle.
1. A frame 1; 2. a stirring assembly; 211. a first stirring shaft; 212. a second stirring shaft; 213. a third stirring shaft; 220. a scraping member; 221. a first stirring paddle; 222. a second stirring paddle; 223. a third stirring paddle; 231. a first dispersion shaft; 232. a second dispersion shaft; 233. a third dispersion axis; 241. a first dispersion tray; 242. a second dispersion tray; 243. a third dispersion tray; 25. a fixing plate;
3. a charging bucket; 4. a transmission assembly; 41. mounting a base; 42. a stirring driving motor; 43. a central shaft; 441. a transmission belt; 442 drive gears; 45. a driving gear; 46. a driven gear.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Example one
As shown in fig. 1, the three-paddle mixing and stirring device comprises a frame 1, a transmission assembly 4, a stirring assembly 2 and a charging basket 3, wherein the transmission assembly 4 is fixed on the frame 1 and can realize circumferential rotation, and the transmission assembly 4 drives the stirring assembly 2 to realize revolution and rotation. Stirring subassembly 2 can arrange in storage bucket 3 and stir battery thick liquids, also can break away from storage bucket 3 after the stirring finishes, specifically can realize through the oscilaltion of storage bucket 3 that stirring subassembly 2 stretches into or breaks away from storage bucket 3, also can realize through the oscilaltion of stirring subassembly 2 that stirring subassembly 2 stretches into or breaks away from storage bucket 3, does not do here and gives unnecessary details.
As shown in fig. 2-6, the transmission assembly 4 includes a mounting base 41, a stirring driving motor 42 and a central shaft 43, which are linked together, the mounting base 41 is axially fixed and circumferentially rotatably disposed on the frame 1, the central shaft 43 is fixedly connected to the mounting base 41, and the first stirring shaft 211, the second stirring shaft 212 and the third stirring shaft 213 are all fixedly connected to the mounting base 41 through the fixing plate 25; a driving gear 45 is fixedly sleeved on the surface of the central shaft 43, the driving gear 45 is engaged with three driven gears 46, and the three driven gears 46 are respectively connected with a first stirring shaft 211, a second stirring shaft 212 and a third stirring shaft 213 in a linkage manner; the first stirring shaft 211, the second stirring shaft 212, and the third stirring shaft 213 are respectively and fixedly connected to a first stirring paddle 221, a second stirring paddle 222, and a third stirring paddle 223, and the bottom of each stirring paddle is provided with a scraping member 220 (it should be noted here that the scraping member 220 may not be provided, or may be provided at the bottom of a specific stirring paddle, in order to realize that when the stirring paddles stir the battery slurry at the bottom of the charging basket, the turning force is increased for the material at the bottom of the charging basket, so that the battery slurry is more uniformly mixed, in this embodiment, the scraping members 220 are preferably provided at the bottoms of 3 stirring paddles).
The working process is as follows: the stirring driving motor 42 is started, the central shaft 43 is driven to rotate through the transmission belt 441 and the transmission gear 442, and the whole mounting base 41 rotates on the frame 1 along with the central shaft 43 because the central shaft 43 is fixedly connected with the mounting base 41, so that the three stirring shafts on the mounting base 41 revolve; in addition, when the central shaft 43 rotates, the driving gear 45 on the central shaft 43 rotates along with the central shaft, the three driven gears 46 are axially fixed and circumferentially rotationally fixed on the mounting base 41, and the three driven gears 46 are driven to rotate under the meshing transmission of the driving gear 45, so that the rotation of the three stirring shafts is realized.
It should be noted here that the transmission assembly 4 may also control the revolution and rotation of the three stirring shafts respectively through different motors, and here, in order to make the whole equipment small enough, compact enough, and stable enough in transmission, the solution of the embodiment is preferred.
As shown in fig. 7, when the first stirring shaft 211, the second stirring shaft 212 and the third stirring shaft 213 are distributed at 120 °; similarly, the first stirring paddle 221, the second stirring paddle 222 and the third stirring paddle 223 are also distributed at 120 °, and the movement trajectories of the three stirring paddles are a, b and c respectively. At the moment, the diameter of the dispersing shaft which can be placed between every two stirring shafts is influenced by the motion tracks of the three stirring paddles, and the diameter of the dispersing shaft is limited, so that the diameter of the dispersing disc is directly influenced, and the linear speed of the dispersing disc in the stirring process is influenced.
If the diameter of the dispersion impeller is directly increased in order to increase the linear velocity, although the linear velocity of the dispersion impeller can be increased, the load capacity of the dispersion shaft is affected, and the load capacity and power requirement of the driving motor are greatly improved, so that the economy is not high in general.
Meanwhile, in the state, although the movement tracks of the three stirring paddles have a certain overlapping area, the three stirring paddles cannot be tangent or interfered in the movement process, and although more shearing surfaces are arranged during stirring, the shearing force is not large enough, so that the stirring effect on the battery slurry is limited.
The center of the motion track of the first stirring paddle 221 and the revolution center of the stirring assembly 2 form a first straight line, the center of the motion track of the second stirring paddle 222 and the revolution center of the stirring assembly 2 form a second straight line, the center of the motion track of the third stirring paddle 223 and the revolution center of the stirring assembly 2 form a third straight line, an included angle formed by the first straight line and the second straight line is 88 degrees, and an included angle formed by the second straight line and the third straight line is 88 degrees.
First stirring rake 221, second stirring rake 222, third stirring rake 223 when the stirring, there is the condition of mutual shearing in the subregion, the battery thick liquids can receive the stirring power that stirring rake self formed on the one hand, another conveniently can receive the shearing force that forms between each stirring rake, a plurality of power multiplex effect is on the battery thick liquids, can further break up and the homogeneity with the fine powder group or the solid particle conglomerate in the solution, obtain enough tiny solid particle, and evenly distributed in the solution, reach the effect of microcosmic ultra-fine dispersion, the customer improves thick liquids comprehensive properties significantly, the battery thick liquids that finally obtains, have better granularity, fineness and viscosity, promote the quality of battery thick liquids energetically.
The stirring assembly 2 further comprises a dispersion shaft and dispersion discs arranged on the surface of the dispersion shaft, the dispersion shaft is located on a first dispersion shaft 231 between the first stirring shaft 211 and the second stirring shaft 212, a second dispersion shaft 232 between the second stirring shaft 212 and the third stirring shaft 213, and a third dispersion shaft 233 between the second stirring shaft 212 and the third stirring shaft 213, the first dispersion shaft 231 is fixedly provided with a first dispersion disc 241, the second dispersion shaft 232 is fixedly provided with a second dispersion disc 242, and the third dispersion shaft 233 is fixedly provided with a third dispersion disc 243. There is a large stirring blank area between the first stirring paddle 221 and the third stirring paddle 223, and the diameter of the third dispersion plate 243 can be maximally larger than the diameters of the first dispersion plate and the second dispersion plate 242, so as to increase the linear velocity of the third dispersion plate 243 and achieve high-speed dispersion.
Example two
Different from the first embodiment, the included angle formed by the first straight line and the second straight line is 90 °, and the included angle formed by the second straight line and the third straight line is 90 °.
EXAMPLE III
Unlike the previous embodiment, as shown in fig. 8, the included angle formed by the first straight line and the second straight line is 93 °, the included angle formed by the second straight line and the third straight line is 93 °, and the motion trajectories of the three paddles are e, f and g, respectively. According to the structural arrangement of this embodiment, the first paddle 221, the second paddle 222, and the third paddle 223 can be switched back and forth between two shearing states, the first state is that two of the three are tangent to each other, the second state is that the first paddle 221 and the second paddle 222, and the second paddle 222 and the third paddle 223 are tangent to each other, and the first paddle 221 and the third paddle 223 do not interfere with each other, as shown in fig. 9-12. Under this angle, no matter where the first stirring paddle 221, the second stirring paddle 222 and the third stirring paddle 223 are, the first stirring paddle 221 and the second stirring paddle 222, the second stirring paddle 222 and the third stirring paddle 223 are always in a tangent state, the battery slurry receives stirring force and shearing force all the time, and the stirring quality of the battery slurry is improved to the maximum extent. The movement mode of the stirring paddle can uninterruptedly generate multi-directional shearing forces in the clockwise/anticlockwise direction, the revolution direction and the rotation direction from top to bottom, can form a maximum movement shearing space, has the best stirring effect, and obtains the best quality of battery slurry after stirring.
Example four
Unlike the above embodiment, the angle formed by the first straight line and the second straight line is 95 °, and the angle formed by the second straight line and the third straight line is 95 °.
EXAMPLE five
Unlike the above embodiment, the angle formed by the first straight line and the second straight line is 98 °, and the angle formed by the second straight line and the third straight line is 98 °.
EXAMPLE six
Unlike the above embodiment, the first line forms an angle of 88 ° with the second line, and the second line forms an angle of 98 ° with the third line.
Reference example
Unlike the above embodiment, the included angle formed by the first straight line and the second straight line is 120 °, and the included angle formed by the second straight line and the third straight line is 120 °.
It should be noted that the shearing of the first stirring paddle 221, the second stirring paddle 222, and the third stirring paddle 223 during stirring in this document does not mean that the stirring paddles are completely attached together, but means that a small amount of gap (e.g., a gap distance of about 0.1mm to 10 cm) exists between the stirring paddles, the gap allows the battery slurry to pass through, the battery slurry receives a multi-directional shearing force in the up-down direction, the clockwise/counterclockwise direction, the revolution direction, and the rotation direction, and the battery slurry in the gap portion completely receives the shearing force.
Since the battery paste is divided into positive electrode battery paste, negative electrode battery paste, mixed paste, and the like, the formulations of the battery pastes adopted by different manufacturers may be different. The applicant tests battery slurry of a plurality of client manufacturers, and the obtained stirring effects are similar, namely the structural arrangement mode of the stirring paddle recorded in the application document is suitable for battery slurry of various formulas; in comparison with the conventional single-paddle and double-paddle mixers and the three-paddle mixer originally developed by the applicant, the quality of the battery slurry obtained by the three-paddle mixer disclosed in the present application is better.
Through multiple experiments, the applicant puts the same amount of the same battery slurry into the mixers in the first to sixth embodiments and the reference example, and stirs for 1 hour, wherein the shearing range of the battery slurry and the performance after the completion of the stirring are as follows:
| example one | Example two | EXAMPLE III | Example four | EXAMPLE five | EXAMPLE six | Reference example | |
| Shear range to which the battery paste is subjected | A+ | A++ | A+++ | A++ | A+ | A+ | A |
| The battery slurry after stirring is dispersed and homogenized | A+ | A++ | A+++ | A++ | A+ | A+ | A |
| Fluidity of the agitated Battery slurry | A+ | A++ | A+++ | A++ | A+ | A+ | A |
The shearing range of the battery slurry is A according to the sequence of the area size+++＞A++＞A+Is greater than A; the dispersion uniformity is ranked as A according to the quality and quality degree+++＞A++＞A+Is greater than A; the fluidity is ranked as A according to the degree of quality+++＞A++＞A+Is greater than A; namely, the larger the area of the shearing part received by the battery slurry in the stirring process, the larger the shearing force, and the higher the quality of the obtained battery slurry.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (7)
1. The utility model provides a mixing stirring equipment is mixed to three oar formulas, includes drive assembly and the stirring subassembly that the linkage is connected, and drive assembly drives the stirring subassembly and realizes revolution and rotation, the stirring subassembly is including the first (mixing) shaft that has first stirring rake, the second (mixing) shaft that has the second stirring rake, the third (mixing) shaft that has the third stirring rake, and first stirring rake, second stirring rake, third stirring rake are heliciform structure and its top is 90 to the helix angle of bottom, its characterized in that: the center of the motion track of the first stirring paddle and the revolution center of the stirring assembly form a first straight line, the center of the motion track of the second stirring paddle and the revolution center of the stirring assembly form a second straight line, the center of the motion track of the third stirring paddle and the revolution center of the stirring assembly form a third straight line, an included angle formed by the first straight line and the second straight line is 88-98 degrees, and an included angle formed by the second straight line and the third straight line is 88-98 degrees.
2. The three-paddle mixing and stirring device according to claim 1, wherein: and the included angle formed by the first straight line and the second straight line is the same as the included angle formed by the second straight line and the third straight line.
3. The three-paddle mixing and stirring device according to claim 1 or 2, wherein: the included angle formed by the first straight line and the second straight line is 90-95 degrees, and the included angle formed by the second straight line and the third straight line is 90-95 degrees.
4. The three-paddle mixing and stirring device according to claim 1 or 2, wherein: the transmission assembly comprises a mounting base, a stirring driving motor and a central shaft which are connected in a linkage manner, the mounting base is axially fixed and circumferentially and rotationally arranged on the rack 1, the central shaft, the first stirring shaft, the second stirring shaft and the third stirring shaft are fixedly connected with the mounting base, a driving gear is fixedly sleeved on the surface of the central shaft, the driving gear is engaged with three driven gears, and the three driven gears are respectively connected with the first stirring shaft, the second stirring shaft and the third stirring shaft in a linkage manner.
5. The three-paddle mixing and stirring device according to claim 1 or 2, wherein: the stirring assembly further comprises a dispersing shaft and a dispersing disc arranged on the surface of the dispersing shaft, the dispersing shaft is located on a first dispersing shaft between the first stirring shaft and the second stirring shaft, a second dispersing shaft between the second stirring shaft and the third stirring shaft, and a third dispersing shaft between the second stirring shaft and the third stirring shaft, and the diameter of the dispersing disc on the surface of the third dispersing shaft is larger than the diameter of the dispersing disc of the first dispersing shaft and the diameter of the dispersing disc of the second dispersing shaft.
6. The three-paddle mixing and stirring device according to claim 1 or 2, wherein: and a scraping piece is arranged at the bottom of at least one of the first stirring paddle, the second stirring paddle and the third stirring paddle.
7. The three-paddle mixing and stirring device according to claim 6, wherein: the scraping pieces are at least two and are respectively positioned on two sides of the bottom of the same stirring paddle.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110160483.1A CN112934036A (en) | 2021-02-05 | 2021-02-05 | Three-paddle mixing and stirring equipment |
| CN202111618431.0A CN114345163A (en) | 2021-02-05 | 2021-12-27 | Three-paddle type mixing and stirring equipment for stirring battery slurry |
| PCT/CN2021/141819 WO2022166470A1 (en) | 2021-02-05 | 2021-12-27 | Three-paddle type mixing and stirring apparatus for stirring battery slurry |
| CN202123319847.0U CN216726725U (en) | 2021-02-05 | 2021-12-27 | Three-paddle type mixing and stirring equipment for stirring battery slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110160483.1A CN112934036A (en) | 2021-02-05 | 2021-02-05 | Three-paddle mixing and stirring equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112934036A true CN112934036A (en) | 2021-06-11 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110160483.1A Pending CN112934036A (en) | 2021-02-05 | 2021-02-05 | Three-paddle mixing and stirring equipment |
| CN202111618431.0A Pending CN114345163A (en) | 2021-02-05 | 2021-12-27 | Three-paddle type mixing and stirring equipment for stirring battery slurry |
| CN202123319847.0U Active CN216726725U (en) | 2021-02-05 | 2021-12-27 | Three-paddle type mixing and stirring equipment for stirring battery slurry |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111618431.0A Pending CN114345163A (en) | 2021-02-05 | 2021-12-27 | Three-paddle type mixing and stirring equipment for stirring battery slurry |
| CN202123319847.0U Active CN216726725U (en) | 2021-02-05 | 2021-12-27 | Three-paddle type mixing and stirring equipment for stirring battery slurry |
Country Status (2)
| Country | Link |
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| CN (3) | CN112934036A (en) |
| WO (1) | WO2022166470A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022166470A1 (en) * | 2021-02-05 | 2022-08-11 | 佛山市宏瑞德新能源精密设备有限公司 | Three-paddle type mixing and stirring apparatus for stirring battery slurry |
| CN115869810A (en) * | 2022-12-30 | 2023-03-31 | 中国第一汽车股份有限公司 | Slurry stirring device, electrode slurry, and preparation method and application thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117899689B (en) * | 2024-03-20 | 2024-06-04 | 潍坊杰高非织材料科技有限公司 | Slurry mixing device |
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- 2021-12-27 CN CN202123319847.0U patent/CN216726725U/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2022166470A1 (en) | 2022-08-11 |
| CN216726725U (en) | 2022-06-14 |
| CN114345163A (en) | 2022-04-15 |
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Application publication date: 20210611 |