CN113262690B - Slurry mixing method and device capable of shortening mixing time - Google Patents
Slurry mixing method and device capable of shortening mixing time Download PDFInfo
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- CN113262690B CN113262690B CN202110540663.2A CN202110540663A CN113262690B CN 113262690 B CN113262690 B CN 113262690B CN 202110540663 A CN202110540663 A CN 202110540663A CN 113262690 B CN113262690 B CN 113262690B
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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
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/80—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations
- B01F31/83—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations comprising a supplementary stirring element
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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
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/70—Mixers specially adapted for working at sub- or super-atmospheric pressure, e.g. combined with de-foaming
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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
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
- B01F33/824—Combinations of dissimilar mixers mixing simultaneously in two or more mixing receptacles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
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Abstract
The invention discloses a slurry mixing method and a device for shortening the mixing time, which respectively and independently stir and disperse an active material, a conductive agent, an adhesive and a solvent, and then mix the materials together to obtain the final slurry, wherein the invention adopts a multi-linear mixing method to independently stir and disperse the active material, the conductive agent and the adhesive and the solvent according to a certain proportion, and controls the stirring and dispersing speed, the temperature and the vacuum degree in the stirring and dispersing process to ensure that the viscosity and the fineness of the obtained slurry are in a proper range, so that the active material, the conductive agent, the adhesive and the solvent are better dispersed and fused, the agglomeration effect of the slurry is favorably reduced, in the process of stirring and dispersing the wetted powder at a low speed, the normal pressure is kept, the part of the powder which is not wetted in time is prevented from being sucked away, and the vacuum degree is controlled in the high-speed stirring and dispersing process, the existence of a large amount of bubbles in the slurry is prevented, so that the uniformity and the stability of the slurry are improved to a certain extent.
Description
Technical Field
The invention relates to the technical field of energy storage of super capacitors, in particular to a slurry mixing method and a slurry mixing device for shortening mixing time.
Background
A super capacitor is a new type of energy storage device that is interposed between a conventional capacitor and a secondary battery. The super capacitor has the advantages of high efficiency, environmental protection and relatively low cost, so that the super capacitor becomes the focus of the energy storage field. The super capacitor has wide application prospect in various fields such as new energy, rail transit, communication, engineering machinery, electric power, military, aerospace and the like.
The electrode plate is a core component of the super capacitor, and the quality of the electrode plate directly determines the performance (capacity, internal resistance, cycle life and the like) of a super capacitor monomer formed by the electrode plate. One of the key steps for determining the quality of the electrode slice is the material mixing process;
at present, although some domestic enterprises can master a certain mixing technology, the single-linear mixing process is mainly adopted, the mixing time is long, and the problems of poor slurry dispersibility and poor stability exist, particularly, slurry stored for a long time is easy to agglomerate, precipitate and the like, even if the slurry is redispersed, the original effect is difficult to completely recover, the problems of uneven thickness, poor strength repeatability and the like of a manufactured electrode plate can be caused, so that more waste is inevitably caused in the actual production process, and therefore, a slurry mixing method and a slurry mixing device for shortening the mixing time are provided for solving the problems.
Disclosure of Invention
The invention aims to provide a slurry mixing method and a slurry mixing device for shortening mixing time so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a slurry mixing method for shortening mixing time is characterized in that an active material, a conductive agent, a bonding agent and a solvent are separately stirred and dispersed and then mixed together to obtain a final slurry, and the method comprises the following steps:
s1, carrying out low-speed stirring and dispersion on the active material and the solvent in a large stirrer according to a certain weight ratio (the active material: the solvent is 1: 0.2-2) through a pretreatment mechanism to fully wet the active material powder, and then carrying out high-speed stirring and dispersion;
s2, conducting low-speed stirring and dispersing the conducting agent and the solvent in a first small stirrer according to a certain weight ratio (the conducting agent: the solvent is 1: 2-6) through a pretreatment mechanism to fully wet the conducting agent powder, and then conducting high-speed stirring and dispersing;
s3, fully mixing the adhesive and the solvent in a second small-sized stirrer according to a certain weight ratio (the adhesive: the solvent is 1: 2-6) through a pretreatment mechanism to fully wet the adhesive powder;
and S4, stirring the products of S1, S2 and S3 in a large stirrer, and finally mixing to obtain slurry.
Further, the active material in S1 includes at least one or more selected from the group consisting of activated carbon, mesoporous carbon, vegetable-type hard carbon, soft carbon, carbon aerogel, carbon nanotube, conductive polymer, graphene, artificial graphite, natural graphite, mesocarbon microbeads, TiO2, lithium titanate, lithium cobaltate, lithium manganate, and LiMPO4 (where M is V, Cr, Mn, Fe, Co, Ni, etc.);
in the process of mixing the active material and the solvent in S1, when stirring and dispersing at low speed, the stirring speed of a large-scale stirrer is 5 r/min-10 r/min, the dispersing speed is 50 r/min-300 r/min, the stirring and dispersing time at low speed is 10 min-20 min, and the normal pressure is kept; when stirring and dispersing at high speed, the stirring speed of a large-scale stirrer is 10 r/min-30 r/min, the dispersing speed is 500 r/min-1500 r/min, the high-speed stirring and dispersing time is 100 min-120 min, the vacuum degree is-0.050 MPa-0.090 MPa, the temperature is controlled between 10 ℃ and 35 ℃ in the whole process, the fineness of the obtained active material intermediate slurry is 5 mu m-25 mu m, and the viscosity is 1000 mPas-30000 mPas.
Further, in S2, the conductive agent is one or more of conductive carbon black, acetylene black, carbon nanofibers, carbon fibers, coke, high surface area carbon, and graphite;
in the process of mixing the conductive agent and the solvent in S2, when stirring and dispersing at low speed, the stirring speed of the first small-sized stirrer is 5 r/min-10 r/min, the dispersing speed is 50 r/min-500 r/min, the stirring and dispersing time at low speed is 10 min-20 min, and the normal pressure is kept; when stirring and dispersing at high speed, the stirring speed of the first small-sized stirrer is 10 r/min-30 r/min, the dispersing speed is 1000 r/min-2500 r/min, the high-speed stirring and dispersing time is 100 min-120 min, the vacuum degree is-0.050 Mpa-0.090 Mpa, the temperature is controlled between 10 ℃ and 35 ℃ in the whole process, the fineness of the obtained conductive agent intermediate slurry is 5-25 μm, and the viscosity is 1000-20000 mPas.
Further, the adhesive in S3 is a flexible polymer, and is one or more of polytetrafluoroethylene resin, polyvinylidene fluoride resin, polyvinyl alcohol, polyvinyl acetate, stearic acid, styrene butadiene rubber, nitrile butadiene rubber, and acrylate rubber;
the solvent in S3 is one or more of hydrocarbon, acetone, acetic acid, isopropanol, acrylonitrile, ethanol, methanol, vinyl ester, naphtha and N-methyl pyrrolidone;
in the process of mixing the adhesive and the solvent in S3, when stirring and dispersing at low speed, the stirring speed of the second small-sized stirrer is 5 r/min-10 r/min, the dispersing speed is 50 r/min-500 r/min, the stirring and dispersing time at low speed is 10 min-20 min, and the normal pressure is kept; when stirring and dispersing at high speed, the stirring speed of the second small-sized stirrer is 10 r/min-30 r/min, the dispersing speed is 1000 r/min-2500 r/min, the high-speed stirring and dispersing time is 100 min-120 min, the vacuum degree is-0.050 Mpa-0.090 Mpa, the temperature is controlled between 10 ℃ and 35 ℃ in the whole process, the fineness of the obtained paste intermediate slurry is 5-15 μm, and the viscosity is 100-2000 mPa-s.
Further, in the final mixing in S4, the stirring speed of a large-scale stirrer is 10 r/min-30 r/min, the dispersion speed is 500 r/min-1500 r/min, the stirring and dispersion time is 30 min-60 min, the temperature is controlled between 10 ℃ and 35 ℃, the vacuum degree is controlled between-0.050 Mpa and-0.090 Mpa, the fineness is 5μm-25μm, and the viscosity is 600mPa · S-10000 mPa · S;
in the slurry finally mixed in S4, the active material accounts for 80-95 wt% of the slurry, the conductive agent accounts for 0-10 wt%, the adhesive agent accounts for 5-10 wt%, and the solid content of the slurry is 20-60 wt%.
The utility model provides a slurry mixing device when shortening compounding, includes large-scale mixer, first small-size mixer and second small-size mixer, all fixed the inserting in top one side of large-scale mixer, first small-size mixer and second small-size mixer is equipped with preliminary treatment mechanism, top one side fixedly connected with negative air compressor of large-scale mixer, first small-size mixer and second small-size mixer, the equal fixed mounting in the outside of large-scale mixer, first small-size mixer and second small-size mixer has ultrasonic dispersion devices.
Further, the pretreatment mechanism comprises a storage frame, an L-shaped partition plate is fixedly installed on one side of the inner wall of the storage frame, a first bottom frame and a second bottom frame are respectively and fixedly installed between the two sides of the L-shaped partition plate and the inner wall of the storage frame, a first material control roller and a second material control roller are respectively and rotatably clamped at the tops of the first bottom frame and the second bottom frame, a plurality of groups of first material control grooves distributed in an annular array are formed in the outer side of the first material control roller, a plurality of groups of second material control grooves distributed in an annular array are formed in the outer side of the second material control roller, rotating shafts are fixedly installed in the middle of one sides of the first material control roller and the second material control roller, the rotating shafts are rotatably installed on the storage frame, a liquid inlet pipe is fixedly inserted in the middle of the top end of the L-shaped partition plate, and an oscillating screen mechanism corresponding to the position of the first material control roller is fixedly installed on one side of the bottom end of the storage frame, the pretreatment device comprises a pretreatment mechanism, a large-scale stirrer, a first small-scale stirrer and a second small-scale stirrer, wherein the pretreatment mechanism is fixedly inserted in the middle of the bottom end of the storage frame, and is fixedly inserted in one side of the top end of the large-scale stirrer, the first small-scale stirrer and the second small-scale stirrer through connecting pipes.
Further, it is two sets of one side that first accuse material roller was kept away from to the axis of rotation passes the storage frame and fixed cover is equipped with driven sprocket, and is two sets of driven sprocket's outside meshing is connected with drive chain, one side fixed mounting of storage frame has the slow motor, the output fixed mounting of slow motor has drive sprocket, drive sprocket and drive chain meshing are connected.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts a multi-linear mixing method, active substances, conductive agents and adhesives are respectively and independently stirred and dispersed with solvents according to a certain proportion, the stirring and dispersing speed and the temperature and the vacuum degree in the stirring and dispersing process are controlled, the viscosity and the fineness of the obtained slurry are in a proper range, the active materials, the conductive agents, the adhesives and the solvents are better dispersed and fused, the agglomeration effect of the slurry is favorably reduced, in the process of stirring and dispersing the wetted powder at low speed, the normal pressure is kept, the part of the powder which is not wetted in time is prevented from being sucked away, in the process of stirring and dispersing the powder at high speed, the vacuum degree is controlled, a large amount of bubbles in the slurry are prevented, the uniformity and the stability of the slurry are improved to a certain extent, compared with the existing single-linear mixing method, the multi-linear mixing method realizes the division effect in the economics, the whole mixing time is shortened. Therefore, the multi-linear mixing method is beneficial to improving the yield and the production efficiency of the electrode, and has great significance for controlling the production cost and improving the product competitiveness.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing the structural connection of the pretreatment mechanism in the present invention;
FIG. 3 is a schematic diagram of a multi-linear compounding process of the present invention;
FIG. 4 is a flow chart of a conventional single linear mixing process;
FIG. 5 is a flow chart of the multi-linear compounding method of the present invention.
In the figure: 1. a large-scale mixer; 2. a first mini-blender; 3. a second compact blender; 4. a pretreatment mechanism; 5. a negative air compressor; 6. an ultrasonic dispersion device; 41. a material storage frame; 42. an L-shaped partition plate; 421. a liquid inlet pipe; 431. a first bottom frame; 432. a second bottom frame; 441. a first material control roller; 4411. a first material control groove; 442. a second material control roller; 4421. a second material control groove; 45. a rotating shaft; 451. a driven sprocket; 452. a drive chain; 46. a retarding motor; 461. a drive sprocket; 47. a shaker mechanism; 48. and (4) connecting the pipes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a slurry mixing method for shortening mixing time is characterized in that an active material, a conductive agent, a bonding agent and a solvent are separately stirred and dispersed and then mixed together to obtain a final slurry, and the method comprises the following steps:
s1, carrying out low-speed stirring and dispersion on the active material and the solvent in a large stirrer 1 according to a certain weight ratio (1: 0.2-2) through a pretreatment mechanism 4 to fully wet the active material powder, and then carrying out high-speed stirring and dispersion;
further, the active material in S1 includes at least one or more selected from the group consisting of activated carbon, mesoporous carbon, vegetable-type hard carbon, soft carbon, carbon aerogel, carbon nanotube, conductive polymer, graphene, artificial graphite, natural graphite, mesocarbon microbeads, TiO2, lithium titanate, lithium cobaltate, lithium manganate, and LiMPO4 (where M is V, Cr, Mn, Fe, Co, Ni, etc.);
in the process of mixing the active material and the solvent in S1, when stirring and dispersing at low speed, the stirring speed of the large-scale stirrer 1 is 5 r/min-10 r/min, the dispersing speed is 50 r/min-300 r/min, the stirring and dispersing time at low speed is 10 min-20 min, and the normal pressure is kept; when stirring and dispersing at high speed, the stirring speed of the large-scale stirrer 1 is 10 r/min-30 r/min, the dispersing speed is 500 r/min-1500 r/min, the high-speed stirring and dispersing time is 100 min-120 min, the vacuum degree is-0.050 Mpa-0.090 Mpa, the temperature is controlled between 10 ℃ and 35 ℃ in the whole process, the fineness of the obtained active material intermediate slurry is 5-25 μm, and the viscosity is 1000-30000 Mpa-s.
S2, conducting agent and solvent are stirred and dispersed at a low speed in a first small stirrer 2 according to a certain weight ratio (the conducting agent: the solvent is 1: 2-6) through a pretreatment mechanism 4 to fully wet the conducting agent powder, and then stirred and dispersed at a high speed;
further, in S2, the conductive agent is one or more of conductive carbon black, acetylene black, carbon nanofibers, carbon fibers, coke, high specific surface area carbon, and graphite;
in the process of mixing the conductive agent and the solvent in S2, when stirring and dispersing at low speed, the stirring speed of the first small-sized stirrer 2 is 5 r/min-10 r/min, the dispersing speed is 50 r/min-500 r/min, the stirring and dispersing time at low speed is 10 min-20 min, and the normal pressure is kept; when stirring and dispersing at high speed, the stirring speed of the first small-sized stirrer 2 is 10 r/min-30 r/min, the dispersing speed is 1000 r/min-2500 r/min, the high-speed stirring and dispersing time is 100 min-120 min, the vacuum degree is-0.050 Mpa-0.090 Mpa, the temperature is controlled between 10 ℃ and 35 ℃ in the whole process, the fineness of the obtained conductive agent intermediate slurry is 5 mu m-25 mu m, and the viscosity is 1000mPa & s-20000 mPa & s.
S3, fully mixing the adhesive and the solvent in a second small-sized stirrer 3 according to a certain weight ratio (the adhesive: the solvent is 1: 2-6) through a pretreatment mechanism 4 to fully wet the adhesive powder;
further, the adhesive in S3 is a flexible polymer, and is one or more of polytetrafluoroethylene resin, polyvinylidene fluoride resin, polyvinyl alcohol, polyvinyl acetate, stearic acid, styrene butadiene rubber, nitrile butadiene rubber, and acrylate rubber;
the solvent in S3 is one or more of hydrocarbon, acetone, acetic acid, isopropanol, acrylonitrile, ethanol, methanol, vinyl ester, naphtha and N-methyl pyrrolidone;
in the process of mixing the adhesive and the solvent in S3, when stirring and dispersing at low speed, the stirring speed of the second small-sized stirrer 3 is 5 r/min-10 r/min, the dispersing speed is 50 r/min-500 r/min, the stirring and dispersing time at low speed is 10 min-20 min, and the normal pressure is kept; when stirring and dispersing at high speed, the stirring speed of the second small-sized stirrer 3 is between 10r/min and 30r/min, the dispersing speed is between 1000r/min and 2500r/min, the high-speed stirring and dispersing time is between 100min and 120min, the vacuum degree is between-0.050 Mpa and-0.090 Mpa, the temperature is controlled between 10 ℃ and 35 ℃ in the whole process, the fineness of the obtained paste intermediate slurry is between 5 mu m and 15 mu m, and the viscosity is between 100 mPas and 2000 mPas.
S4, stirring the mixture obtained in the steps S1, S2 and S3 in a large-scale stirrer 1, and finally mixing to obtain slurry.
Further, in the final mixing in S4, the stirring speed of the large-scale stirrer 1 is 10 r/min-30 r/min, the dispersion speed is 500 r/min-1500 r/min, the stirring and dispersion time is 30 min-60 min, the temperature is controlled between 10 ℃ and 35 ℃, the vacuum degree is controlled between-0.050 Mpa and-0.090 Mpa, the fineness is 5μm-25μm, and the viscosity is 600mPa · S-10000 mPa · S;
in the slurry finally mixed in S4, the active material accounts for 80-95 wt% of the slurry, the conductive agent accounts for 0-10 wt%, the adhesive agent accounts for 5-10 wt%, and the solid content of the slurry is 20-60 wt%.
A slurry mixing device capable of shortening mixing time comprises a large mixer 1, a first small mixer 2 and a second small mixer 3; wherein, the large-scale mixer 1, the first small-scale mixer 2 and the second small-scale mixer 3 are all provided with a stirring paddle and a dispersing paddle; large scale mixer 1, the top one side of first small size mixer 2 and second small size mixer 3 is all fixed to be inserted and is equipped with preliminary treatment mechanism 4, large scale mixer 1, top one side fixedly connected with negative air compressor 5 of first small size mixer 2 and second small size mixer 3, large scale mixer 1, the equal fixed mounting in outside of first small size mixer 2 and second small size mixer 3 has ultrasonic wave dispersion devices 6, through setting up ultrasonic wave dispersion devices 6, when large scale mixer 1, first small size mixer 2 and second small size mixer 3 carry out each material stirring and compounding, utilize the ultrasonic wave to vibrate, reduce the reunion effect of compounding in-process, and can also make the part that is difficult to be dispersed obtain better dispersion.
The pretreatment mechanism 4 comprises a storage frame 41, an L-shaped clapboard 42 is fixedly arranged on one side of the inner wall of the storage frame 41 to divide the storage frame 41 into two groups of feeding spaces, so as to separate and convey solid materials and liquid materials, a first bottom frame 431 and a second bottom frame 432 are respectively and fixedly installed between two sides of the L-shaped partition plate 42 and the inner wall of the storage frame 41, through grooves are respectively formed in the middle parts of the first bottom frame 431 and the second bottom frame 432, a first material control roller 441 and a second material control roller 442 are respectively and rotatably clamped at the top parts of the first bottom frame 431 and the second bottom frame 432, a plurality of groups of first material control grooves 4411 distributed in an annular array are formed in the outer side of the first material control roller 441, a plurality of groups of second material control grooves 4421 distributed in an annular array are formed in the outer side of the second material control roller 442, wherein the ratio of the total storage capacity of the multiple groups of first material control grooves 4411 to the total storage capacity of the multiple groups of second material control grooves 4421 on the large-scale stirring machine 1 is 1: 0.2-2; the ratio of the total storage capacity of the multiple groups of first material control grooves 4411 on the first small-sized stirrer 2 to the total storage capacity of the multiple groups of second material control grooves 4421 is 1: 2-6; the ratio of the total storage capacity of the multiple groups of first material control grooves 4411 on the second small-sized stirrer 3 to the total storage capacity of the multiple groups of second material control grooves 4421 is 1: 2-6, so that the materials in the large-sized stirrer 1, the first small-sized stirrer 2 and the second small-sized stirrer 3 can be accurately and controllably conveyed;
first accuse material roller 441 and the equal fixed mounting in one side middle part of second accuse material roller 442 have axis of rotation 45, axis of rotation 45 rotates and installs on storage frame 41, the top middle part of L type baffle 42 is fixed to be inserted and is equipped with feed liquor pipe 421, be used for the input solvent, bottom one side fixed mounting of storage frame 41 has the vibration sieve mechanism 47 that corresponds with first accuse material roller 441 position, the bottom middle part of storage frame 41 is fixed to be inserted and is equipped with connecting pipe 48, pretreatment mechanism 4 all is fixed to be inserted and is connected at large-scale mixer 1 through connecting pipe 48, the top one side of first small-scale mixer 2 and second small-scale mixer 3.
When the device is used, active materials, conductive agents and adhesives are respectively placed on the large-scale stirring machine 1, the first small-scale stirring machine 2 and the second small-scale stirring machine 3 for screening by the oscillating screen mechanisms 47, the screened materials enter the corresponding feeding spaces, the solvents are input into the corresponding feeding spaces through the liquid inlet pipes 421, then the driving chain wheels 461 are driven to slowly rotate by starting the retarding motors 46, so that the driving chains 452 are driven to slowly rotate, and the rotating shafts 45 on the two sides are synchronously driven to drive the corresponding first material control rollers 441 and the second material control rollers 442 to slowly rotate, the active substance, the conductive agent and the adhesive agent are placed in corresponding first material control grooves 4411, the solvent is placed in corresponding second material control grooves 4421, and along with the slow rotation of the first material control rollers 441 and the second material control rollers 442, the active substance, the conductive agent, the adhesive agent and the solvent in a plurality of groups of first material control grooves 4411 respectively enter the bottom of the material storage frame 41 through the through grooves and enter the corresponding large-scale stirring machine 1, the first small-scale stirring machine 2 and the second small-scale stirring machine 3 through the connecting pipes 48, wherein after the first material control rollers 441 and the second material control rollers 442 in the large-scale stirring machine 1, the first small-scale stirring machine 2 and the second small-scale stirring machine 3 synchronously rotate for one circle, the input ratio of the active substance to the solvent is 1: 0.2-2, the input ratio of the conductive agent to the solvent is 1: 2-6, and the input ratio of the adhesive agent to the solvent is 1: 2-6, so that the active substance, the conductive agent, the adhesive agent and the adhesive agent are achieved, The paste and the solvent are precisely transported in a controlled amount, so that the subsequent processing of the slurry is facilitated.
The working principle is as follows: the invention relates to a slurry mixing method and a device for shortening the mixing time, when in use, a multi-linear mixing method is adopted, active substances, a conductive agent and a sticking agent are respectively and independently stirred and dispersed with a solvent according to a certain proportion, the stirring and dispersing speed and the temperature and the vacuum degree in the stirring and dispersing process are controlled, the viscosity and the fineness of the obtained slurry are in a proper range, the active materials, the conductive agent, the sticking agent and the solvent are better dispersed and fused, the agglomeration effect of the slurry is favorably reduced, in the process of stirring, dispersing and wetting powder at low speed, the normal pressure is kept, the part of the powder which is not wetted in time is prevented from being sucked away, in the process of stirring, dispersing and wetting powder at high speed, the vacuum degree is controlled, a large amount of bubbles are prevented from being existed in the slurry, so that the uniformity and the stability of the slurry are improved to a certain extent, compared with the existing single-linear mixing method, the multi-linear mixing method realizes the division effect in economics and shortens the whole mixing time. Therefore, the multi-linear mixing method is beneficial to improving the yield and the production efficiency of the electrode, and has great significance for controlling the production cost and improving the product competitiveness.
Having shown and described embodiments of the present invention, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides a slurry mixing device when shortening compounding, includes large-scale mixer (1), first small-size mixer (2) and second small-size mixer (3), its characterized in that: a pretreatment mechanism (4) is fixedly inserted into one side of the top ends of the large stirrer (1), the first small stirrer (2) and the second small stirrer (3), a negative air compressor (5) is fixedly connected to one side of the top of the large stirrer (1), the first small stirrer (2) and the second small stirrer (3), and an ultrasonic dispersion device (6) is fixedly installed on the outer sides of the large stirrer (1), the first small stirrer (2) and the second small stirrer (3);
the pretreatment mechanism (4) comprises a storage frame (41), an L-shaped partition plate (42) is fixedly installed on one side of the inner wall of the storage frame (41), a first bottom frame (431) and a second bottom frame (432) are respectively and fixedly installed between the two sides of the L-shaped partition plate (42) and the inner wall of the storage frame (41), a first material control roller (441) and a second material control roller (442) are respectively and rotatably clamped at the tops of the first bottom frame (431) and the second bottom frame (432), a plurality of groups of first material control grooves (4411) distributed in an annular array are formed in the outer side of the first material control roller (441), a plurality of groups of second material control grooves (4421) distributed in an annular array are formed in the outer side of the second material control roller (442), rotating shafts (45) are respectively and fixedly installed in the middles of one sides of the first material control roller (441) and the second material control roller (442), and the rotating shafts (45) are rotatably installed on the storage frame (41), the utility model discloses a pretreatment device, including L type baffle (42), shaking screen mechanism (47) that the top middle part of L type baffle (42) is fixed to be inserted and is equipped with feed liquor pipe (421), the bottom one side fixed mounting of storage frame (41) has the shaking screen mechanism (47) that correspond with first accuse material roller (441) position, the bottom middle part fixed insertion of storage frame (41) is equipped with connecting pipe (48), preliminary treatment mechanism (4) are all through connecting pipe (48) fixed grafting in the top one side of large-scale mixer (1), first small-size mixer (2) and second small-size mixer (3).
2. The slurry mixing device capable of shortening mixing time according to claim 1, characterized in that: two sets of one side that first accuse material roller (441) was kept away from in axis of rotation (45) passes storage frame (41) and fixed cover is equipped with driven sprocket (451), and is two sets of the outside meshing of driven sprocket (451) is connected with drive chain (452), one side fixed mounting of storage frame (41) has slow motor (46), the output fixed mounting of slow motor (46) has drive sprocket (461), drive sprocket (461) and drive chain (452) meshing are connected.
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| CN208554021U (en) * | 2018-06-29 | 2019-03-01 | 广州光科机械设备有限公司 | A kind of Intelligent lithium battery electric slurry production line |
| CN210251930U (en) * | 2019-03-04 | 2020-04-07 | 青岛延晖环保科技有限公司 | Active bromine bactericide preparation facilities |
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| CN208554021U (en) * | 2018-06-29 | 2019-03-01 | 广州光科机械设备有限公司 | A kind of Intelligent lithium battery electric slurry production line |
| CN210251930U (en) * | 2019-03-04 | 2020-04-07 | 青岛延晖环保科技有限公司 | Active bromine bactericide preparation facilities |
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