CN115138285B - Dispersing mixer and mixing method thereof - Google Patents

Abstract

The invention discloses a dispersion mixer and a mixing method thereof. Including the frame and locate the first drive assembly in the frame respectively, second drive assembly and mixed subassembly, mixed subassembly is including holding the unit, stirring mixing unit and broken dispersion unit, stirring mixing unit includes fixing support, stirring rotation axis and stirring rake, the second end of stirring rake is along vertical downwards and along the setting of circumference turn-knob, the second end of stirring rake is used for the cover to locate outside broken dispersion unit, broken dispersion unit will enter into to holding the material breakage in the unit and make the material dispersion to the region of stirring rake, the stirring rake rotates simultaneously and makes the material rebound that is in the stirring rake region and return to the inside of broken dispersion unit from the top of broken dispersion unit, carry out the dispersion mixture once more by broken dispersion unit. Broken dispersion unit and stirring rake linkage operation form the material circulation dispersion and mix, and the material that will hold in the unit that can be quick disperses and mixes, and dispersion mixing efficiency is high, the homogeneity is good.

Description

Dispersing mixer and mixing method thereof

Technical Field

The invention relates to the technical field of material mixing, in particular to a dispersing mixer and a mixing method thereof.

Background

The lithium ion battery industry develops very rapidly, and the characteristics of multiple material types, large specific gravity difference, small particle size, large specific surface and the like in the lithium ion battery batching process make the material slurry difficult to stir and uniformly disperse, thus becoming a difficult problem in the industry. In the prior art, the battery slurry preparation process mainly depends on a double-planet stirrer, a double-screw extruder and a high-speed dispersion machine which are matched for use,

the double-planet stirrer is adopted, the operation of the equipment is simple, but the stirring uniformity is general, the energy consumption is high, the stirring time is long, the equipment volume is large, materials are easy to stick in the equipment, and the like; the double screw extruder and the high-speed dispersion machine are matched for use, the homogenizing speed only needs about 2 hours, but the two devices are adopted, the material mixing uniformity has deviation, the device is difficult to clean, the operation is complicated, and the technical problems of low material mixing efficiency and uneven material mixing are solved.

In view of the above, it is desirable to provide a dispersion mixer and a mixing method thereof to solve the above-mentioned drawbacks.

Disclosure of Invention

The invention mainly aims to provide a dispersing mixer and a mixing method thereof, and aims to solve the problem that the existing mixer is low in material mixing uniformity.

In order to achieve the purpose, the invention provides a dispersion mixer and a mixing method thereof, wherein the dispersion mixer comprises a rack, and a first driving assembly, a second driving assembly and a mixing assembly which are respectively arranged on the rack, the mixing assembly comprises an accommodating unit, a stirring and mixing unit and a crushing and dispersion unit which are respectively arranged on the rack, the accommodating unit is provided with a stirring and accommodating cavity, and the stirring and mixing unit, the accommodating unit and the crushing and dispersion unit are sequentially arranged along the vertical direction; the first end of the stirring and mixing unit is in transmission connection with the driving end of the first driving assembly, the second end of the stirring and mixing unit is vertically arranged downwards to extend into the stirring and accommodating cavity from the top of the accommodating unit, and a feeding channel communicated with the stirring and accommodating cavity is arranged on the stirring and mixing unit; the first end of the crushing and dispersing unit is arranged at the bottom of the accommodating unit and is positioned in the stirring accommodating cavity, and the second end of the crushing and dispersing unit extends out of the accommodating unit and is in transmission connection with the driving end of the second driving assembly; the stirring and mixing unit comprises a fixed support, a stirring rotating shaft and a stirring paddle, the fixed support is fixedly arranged on the rack, the stirring rotating shaft is rotatably supported on the fixed support around the central axis of the stirring rotating shaft, the driving end of the first driving assembly is in transmission connection with the stirring rotating shaft, the feeding channel is arranged in the stirring rotating shaft, the first end of the stirring paddle is fixedly arranged on the stirring rotating shaft, the second end of the stirring paddle is arranged downwards along the vertical direction and along the circumferential direction in a rotating manner, and the second end of the stirring paddle is used for covering the crushing and dispersing unit; through second drive assembly drives broken dispersion unit rotates, makes broken dispersion unit will pass through feedstock channel gets into to material breakage in stirring holding intracavity makes the material disperse extremely the region of stirring rake, through the drive of first drive assembly the stirring rotation axis drives the stirring rake rotates, so that is in the regional material rebound of stirring rake and follow the top of broken dispersion unit returns to the inside of broken dispersion unit.

Preferably, broken dispersion unit includes the dispersion rotation axis and from last to connecting gradually in broken wheel, thrust wheel and the dispersion wheel on the dispersion rotation axis down, broken dispersion unit still includes liquid flow guide pin bushing and shear wheel, the shear wheel cover is located the outside of dispersion wheel, the liquid flow guide pin bushing is located the top of dispersion wheel and cover are located broken wheel with the outside of thrust wheel, the dispersion rotation axis stretch out to hold the unit outer with the drive end transmission of second drive assembly is connected.

Preferably, the stirring rotating shaft and the accommodating unit are coaxially arranged, and the feeding channel is arranged on a middle shaft of the stirring rotating shaft and axially penetrates through the stirring rotating shaft.

Preferably, the stirring and mixing unit further comprises a static scraper, the static scraper comprises a mounting end used for being connected with the fixed support and a scraping end axially arranged and extending into the feeding channel, and the scraping end of the static scraper is abutted against the inner wall of the stirring rotating shaft.

Preferably, the stirring rake includes the edge first rabbling arm, second rabbling arm and the third rabbling arm that the circumference interval of stirring rotation axis was arranged, vertical downwards and along the circumference turn-knob setting of first rabbling arm edge, the second rabbling arm is along vertical downwards and along the circumference turn-knob setting, the third rabbling arm is along vertical downwards and along the circumference turn-knob setting, wherein first rabbling arm the second rabbling arm and the turn-knob direction of third rabbling arm is unanimous, the turn-knob radius of first rabbling arm is greater than the turn-knob radius of third rabbling arm, the turn-knob radius of third rabbling arm is greater than the turn-knob radius of second rabbling arm.

Preferably, the first drive assembly includes first motor and first transmission unit, the second drive assembly includes second motor and second transmission unit, the one end of first transmission unit with the output transmission of first motor is connected, the other end of first transmission unit with stirring rotation axis transmission is connected, the one end of second transmission unit with the output transmission of second motor is connected, the other end of second transmission unit with the transmission of dispersion rotation axis is connected.

Preferably, the frame includes mounting bracket and lifting unit, lifting unit's link is fixed to be located on the mounting bracket, first drive assembly with the stirring mixing unit is all located on the mounting bracket, the second drive assembly hold the unit with broken dispersion unit locates respectively lifting unit's lift is served.

Preferably, the cooling device further comprises a cooling assembly, the cooling assembly comprises a motor cooling unit for cooling the first driving assembly and the second driving assembly and a jacket cooling unit for cooling the accommodating unit, the motor cooling unit is respectively communicated with the first driving assembly and the second driving assembly, and the jacket cooling unit is arranged outside the accommodating unit.

Preferably, a feeding valve is further arranged at the feeding port of the mixing assembly, and a discharging valve is further arranged at the discharging port of the mixing assembly.

The invention also provides a mixing method of the dispersion mixer, which comprises the following steps:

s1, adding materials into a containing unit through a feeding channel;

s2, crushing and dispersing the materials under the action of the crushing and dispersing unit, enabling the dispersed materials to flow into the area of the stirring and mixing unit, stirring and mixing the peripheral materials by the stirring and mixing unit, lifting, pushing the materials to move upwards by the stirring and mixing unit and returning the materials to the inside of the crushing and dispersing unit from the upper part of the crushing and dispersing unit, and crushing and dispersing the materials again by the crushing and dispersing unit to form circular crushing, dispersing and mixing of the materials; wherein, the linear speed of the crushing and dispersing unit is 5-32m/s, and the rotating speed of the stirring and mixing unit is 5-30RPM;

and S3, after 20 to 40 minutes, discharging the fully crushed and mixed material from a discharge hole.

Compared with the prior art, the dispersing mixer and the mixing method thereof provided by the invention have the following beneficial effects:

the invention provides a dispersion mixer and a mixing method thereof, wherein materials are put into a containing unit under the action of gravity, a second driving assembly drives a crushing and dispersion unit to rotate, the crushing and dispersion unit crushes and disperses the materials, the dispersed materials are dispersed to the area of a stirring paddle, meanwhile, the stirring paddle of the stirring and mixing unit is driven by a first driving assembly to stir and mix the materials at the periphery of the crushing and dispersion unit, the stirring paddle pushes the materials to move upwards and return to the inside of the crushing and dispersion unit from the top of the crushing and dispersion unit, and the crushing and dispersion unit performs dispersion and mixing again to form material circulation dispersion and mixing, so that the phenomenon of block agglomeration is not generated between powder and liquid materials just put into the containing unit.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view showing the internal structure of a dispersing mixer according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the internal structure of a mixing assembly in one embodiment of the present invention;

FIG. 3 is a schematic view of the direction of movement of the material during operation in one embodiment of the present invention;

FIG. 4 is a schematic diagram of a paddle according to an embodiment of the present invention;

FIG. 5 is a top view of an embodiment of the paddle of the present invention;

FIG. 6 is a schematic diagram of a thrust wheel configuration in one embodiment of the present invention;

the reference numbers indicate:

a dispersion mixer 100; a frame 200; a hydraulic station 221; a lift cylinder 222; a lifting platform 223; a feed valve 230; a discharge valve 240; a first drive assembly 300; a first motor 310; a first transmission unit 320; a second drive assembly 400; a second motor 410; a second transmission unit 420; a mixing assembly 500; a housing unit 510; a stirring accommodation chamber 511; a stirring and mixing unit 520; a fixed support 521; the stirring rotation shaft 522; a stirring paddle 523; a first stirring arm 5231; a second stirring arm 5232; a third stirring arm 5233; a static squeegee 524; a feed channel 525; a crushing and dispersing unit 530; a dispersion rotation shaft 531; a breaker wheel 532; a thrust wheel 533; a dispersion wheel 534; a fluid flow guide sleeve 535; a shear wheel 536; a motor cooling unit 610.

The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

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 obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

In addition, the descriptions relating to "first", "second", etc. in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 6, the invention provides a dispersion mixer 100, which includes a frame 200, and a first driving assembly 300, a second driving assembly 400 and a mixing assembly 500 respectively disposed on the frame 200,

the mixing assembly 500 comprises an accommodating unit 510, a stirring and mixing unit 520 and a crushing and dispersing unit 530 which are respectively arranged on the rack 200, the accommodating unit 510 is provided with a stirring and accommodating cavity 511, and the stirring and mixing unit 520, the accommodating unit 510 and the crushing and dispersing unit 530 are sequentially arranged along the vertical direction;

the first end of the stirring and mixing unit 520 is in transmission connection with the driving end of the first driving assembly 300, the second end of the stirring and mixing unit 520 is vertically arranged downwards to extend into the stirring and accommodating cavity 511 from the top of the accommodating unit 510, and the stirring and mixing unit 520 is provided with a feeding channel 525 for communicating with the stirring and accommodating cavity 511;

a first end of the crushing and dispersing unit 530 is disposed at the bottom of the accommodating unit 510 and is located in the stirring accommodating cavity 511, and a second end of the crushing and dispersing unit 530 extends out of the accommodating unit 510 and is in transmission connection with a driving end of the second driving assembly 400;

the stirring and mixing unit 520 comprises a fixed support 521, a stirring rotating shaft 522 and a stirring paddle 523, the fixed support 521 is fixedly arranged on the frame 200, the stirring rotating shaft 522 is rotatably supported on the fixed support 521 around the central axis thereof, the driving end of the first driving assembly 300 is in transmission connection with the stirring rotating shaft 522, the feeding channel 525 is arranged in the stirring rotating shaft 522, the first end of the stirring paddle 523 is fixedly arranged on the stirring rotating shaft 522, the second end of the stirring paddle 523 is arranged downwards along the vertical direction and along the circumferential direction in a twisting manner, and the second end of the stirring paddle 523 is used for covering the crushing and dispersing unit 530;

the second driving component 400 drives the crushing and dispersing unit 530 to rotate, so that the crushing and dispersing unit 530 crushes the material entering the stirring containing cavity 511 through the feeding channel 525 and located at the bottom of the stirring containing cavity 511 and disperses the material to the area of the stirring paddle 523 from the bottom of the stirring containing cavity 511, the first driving component 300 drives the stirring rotating shaft 522 to drive the stirring paddle 523 to rotate, and the material located at the area of the bottom of the stirring paddle 523 moves upwards and returns to the inside of the crushing and dispersing unit 530 from the top of the crushing and dispersing unit 530.

Specifically, arrows in fig. 3 indicate the moving direction of the material, the first driving assembly 300, the second driving assembly 400 and the mixing assembly 500 are all disposed on the rack 200, the stirring and mixing unit 520, the accommodating unit 510 and the crushing and dispersing unit 530 are coaxially and sequentially disposed from top to bottom along the vertical direction, one end of the stirring and mixing unit 520 for stirring and one end of the crushing and dispersing unit 530 for crushing are disposed in the accommodating unit 510, the second end of the stirring and mixing unit 520 is the end for stirring, a discharge port is disposed at the bottom of the accommodating unit 510, and in the present invention, the discharge port is located at the periphery of the crushing and dispersing unit 530.

The containing unit 510 may be a barrel shape or a rectangular parallelepiped shape, and it is sufficient to ensure enough space for the stirring and mixing unit 520 and the crushing and dispersing unit 530 to crush the material, and in this embodiment, the containing unit 510 is a barrel shape.

In detail, the agitating and mixing unit 520 is disposed at an upper end of the receiving unit 510, the agitating and mixing unit 520 is rotated by the first driving assembly 300, the crushing and dispersing unit 530 is disposed at a bottom of the receiving unit 510, and the crushing and dispersing unit 530 is rotated by the second driving assembly 400, a first end of the crushing and dispersing unit 530 being an end for crushing. Meanwhile, a feeding channel 525 is arranged on the stirring and mixing unit 520, the feeding channel 525 is communicated with the stirring and accommodating cavity 511, and the material directly enters the stirring and accommodating cavity 511 through the feeding channel 525.

It should be noted that, first drive assembly 300 drives the rotation of stirring rotation axis 522, the first end fixed connection of stirring rake 523 is on the outer wall of stirring rotation axis 522, stirring rotation axis 522 rotates and then drives the stirring rake 523 rotatory, the second end of stirring rake 523 is along vertical downward and along the setting of circumference turn-knob, the second end of stirring rake 523 also is the flaring setting, therefore stirring rake 523 can cover in stirring holding chamber 511 and locate outside broken dispersion unit 530 to stir the material and mix and the breakage to broken dispersion unit 530 periphery.

The number of the stirring arm of stirring rake 523 can be selected according to actual need, can set up to two, also can set up to three, and the shape of stirring arm also can set up according to actual need, can set up to a plurality of stirring arms that evenly lay, also can set up each stirring arm respectively in the mounted position of difference to carry out diversified intensive mixing to the material and mix. Meanwhile, the stirring arm is in a spiral lifting shape, so that the materials can be effectively rolled and lifted.

It should be noted that, as can be known from fig. 3, the material enters the stirring and accommodating chamber 511 through the feeding channel 525, the second driving assembly 400 drives the crushing and dispersing unit 530 to rotate to disperse and crush the material, the relative acting force between the material and the crushing and dispersing unit 530 is large, the crushing effect is good, the high-speed rotation of the crushing and dispersing unit 530 causes the material in the crushing and dispersing unit 530 to present a rolling circulation, a vortex is generated, the material spirally drops to the bottom of the vortex, and then moves to the periphery of the crushing and dispersing unit 530, and enters the region where the stirring and mixing unit 520 is located, in this region, the material is stirred, mixed and crushed by the stirring paddle 523, the stirring paddle 523 has a gap for feeding and discharging the material, so as to mix and lift the material, the material is sufficiently circulated and turned by the stirring paddle 523, and is lifted, and the material returns to move to the top of the crushing and dispersing unit 530 and enters the inside of the crushing and dispersing unit 530 to be crushed and dispersed again by the crushing and dispersing unit 530. Meanwhile, the initial material entering the stirring containing cavity 511 from the feeding channel 525 falls into the region where the stirring paddle 523 is located, the stirring rotating shaft 522 is driven by the first driving assembly 300 to drive the stirring paddle 523 to rotate, the material located in the region of the stirring paddle 523 is stirred and mixed, and the material is lifted to the top of the crushing and dispersing unit 530.

Therefore, the material has formed the circulation dispersion of a material and has mixed in holding unit 510, constantly at broken dispersion unit 530 and stirring mixing unit 520 between cyclic motion, can be quick with holding the material in unit 510 disperse the misce bene, stirring effect is good, and has improved the misce bene of material, has reduced the settlement rate after the material dispersion mixes.

It should be understood that the material is fed into the containing unit 510 by gravity, the second driving assembly 400 drives the crushing and dispersing unit 530 to rotate, the crushing and dispersing unit 530 disperses the material and disperses the dispersed material to the area of the stirring paddle 523, meanwhile, the first driving assembly 300 drives the stirring paddle 523 of the stirring and mixing unit 520 to stir, mix and crush the peripheral material, the stirring paddle 523 pushes the material to move upward and return to the inside of the crushing and dispersing unit 530 from the top of the crushing and dispersing unit 530, the material enters the inside of the crushing and dispersing unit 530 again, and is dispersed and mixed again by the crushing and dispersing unit 530 to form material circulating and dispersing mixing, so that the powder and the liquid material which are just fed into the barrel do not generate a block agglomeration phenomenon, and the material is dispersed and moved circularly from the center to the periphery by adopting uniform circulations, and forms circulating and dispersing and mixing without dead corners in the containing unit 510, and can rapidly disperse and mix the material in the containing unit 510 uniformly, and the dispersing and mixing efficiency is high, and the uniformity is good.

As a preferred embodiment of the present invention, the crushing and dispersing unit 530 includes a dispersing rotating shaft 531, and a crushing wheel 532, a thrust wheel 533 and a dispersing wheel 534 sequentially connected to the dispersing rotating shaft 531 from top to bottom, the crushing and dispersing unit 530 further includes a fluid guide bushing 535 and a shearing wheel 536, the shearing wheel 536 is covered outside the dispersing wheel 534, the fluid guide bushing 535 is disposed above the dispersing wheel 534 and covered outside the crushing wheel 532 and the thrust wheel 533, and the dispersing rotating shaft 531 extends out of the accommodating unit 510 and is in transmission connection with the driving end of the second driving assembly 400.

It should be noted that one end of the dispersion rotation shaft 531 is located outside the receiving unit 510 to be coupled to the second driving assembly 400, and the other end of the dispersion rotation shaft 531 is located inside the receiving unit 510 to be coupled to the crushing wheel 532, etc. The crushing wheel 532 is disposed at the topmost end of the dispersing rotating shaft 531, and is used for initially crushing a large material, and the thrust wheel 533 is disposed at the lower end of the crushing wheel 532. The thrust wheel 533 is spirally and upwardly arranged on the dispersion rotating shaft 531, and is used for conveying the primarily crushed material downwardly. The dispersing wheel 534 is arranged at the lower end of the thrust wheel 533 and is used for dispersing the primarily crushed materials, the dispersing speed is adjustable and is generally set to be 10-50m/s, and the speed of the dispersing wheel 534 can be adjusted according to the characteristics of different materials. The liquid flow guide sleeve 535 is covered outside the crushing wheel 532 and the thrust wheel 533 to play a role of flow guiding. The shearing wheel 536 is covered outside the dispersing wheel 534, so that the material is dispersed by the dispersing wheel 534 and then thrown out of the shearing wheel 536, and the shearing wheel 536 can shear and mix the material when thrown out.

The materials are put into the containing unit 510 under the action of gravity, large materials adsorbed together are smashed into small particle blocks through the smashing wheel 532, the high-speed rotation of the smashing wheel 532 can effectively and quickly separate the agglomerated massive materials, the smashed materials are sucked into the bottom through the thrust wheel 533 and then are dispersed through the dispersing wheel 534 to form a rack shape, the materials pass through shearing holes in the periphery of the shearing wheel 536 after being sheared at a high speed and enter the outer side of the bottom of the containing unit 510, the materials moving out of the shearing wheel 536 can be effectively sheared and dispersed, at the moment, the stirring paddle 523 can stir and mix the materials again, the stirring paddle 523 can quickly roll and lift the materials upwards, the materials are lifted to the upper middle part of the containing unit 510 again through the stirring paddle 523, the materials enter the smashing and dispersing unit 530 under the action of gravity and the liquid flow guide sleeve 535, the materials are sucked into the dispersing wheel 534 again through the thrust wheel 533 after being smashed through the smashing wheel 532 and are circularly dispersed, the powders and special liquid materials are not agglomerated, the materials are uniformly and uniformly circulated and dispersed in the dispersing unit 510, and the annular mixing and the dispersing unit operates in an annular mode, and the annular mixing and the materials can be dispersed for more than 20 times of dispersing and dispersing the materials per minute.

Further, the stirring rotation shaft 522 is coaxially arranged with the containing unit 510, and the feeding passage 525 is provided on a central axis of the stirring rotation shaft 522 and axially penetrates through the stirring rotation shaft 522.

Specifically, the stirring rotation shaft 522 is coaxially arranged with the accommodating unit 510, and a feeding passage 525 is axially arranged inside the stirring rotation shaft 522, so as to facilitate material feeding. Meanwhile, the first end of the paddle 523 is connected to the outer wall of the stirring rotation shaft 522, and is also disposed coaxially with the stirring rotation shaft 522.

In the crushing and dispersing unit 530, the dispersing rotating shaft 531 and the accommodating unit 510 are coaxially arranged, and the crushing wheel 532 and the thrust wheel 533 are coaxially arranged with the dispersing rotating shaft 531, so that the material can directly enter the crushing and dispersing unit 530 for primary crushing and dispersing under the action of gravity.

Therefore, stirring rotation axis 522, stirring rake 523 and broken dispersion unit 530 three are coaxial laying, and feedstock channel 525 corresponds dispersion rotation axis 531 and sets up, and when the feeding, the material major part can directly fall into and carry out the breakage in broken dispersion unit 530, and the reentrant stirring mixing unit 520 stirs after preliminary breakage and mixes, and crushing effect promotes greatly. Especially for the first feeding, the material can basically fall into the crushing and dispersing unit 530 directly for crushing, and if the material is fed from the side, one more lifting process can be performed, and the material cannot be crushed first.

As a preferred embodiment of the present invention, the stirring and mixing unit 520 further comprises a static scraper 524, the static scraper 524 comprises a mounting end for connecting with the fixed support 521 and a scraping end axially arranged and extending into the feeding channel 525, and the scraping end of the static scraper 524 abuts against the inner wall of the stirring and rotating shaft 522.

In detail, the static scraper 524 is fixed on the fixed support 521, the scraping end of the static scraper 524 is arranged in the feeding channel 525, the material is directly thrown into the containing unit 510 through the feeding channel 525 by the feeding port, the material is thrown into the stirring containing cavity 511 under the action of gravity without generating other resistance, the material is not easy to block, part of the material is stuck on the inner wall of the feeding channel 525 under the action of internal damp gas, friction is generated between the stirring rotating shaft 522 and the static scraper 524 due to the rotation of the stirring rotating shaft 522, the static scraper 524 can scrape the material, the material falls into the stirring containing cavity 511, so that the material is thrown from the feeding port and enters the material through the feeding channel 525 and is not easy to stick on the inner wall of the containing unit 510, and the material throwing process has the characteristic of not being easy to stick on the inner walls of the containing unit 510, the stirring paddle 523, the feeding channel 525 and the like.

As a preferred embodiment of the present invention, the stirring paddle 523 includes a first stirring arm 5231, a second stirring arm 5232 and a third stirring arm 5233 which are arranged at intervals in the circumferential direction of the stirring rotation shaft 522, the first stirring arm 5231 is arranged vertically downward and is twisted in the circumferential direction, the second stirring arm 5232 is arranged vertically downward and is twisted in the circumferential direction, and the third stirring arm 5233 is arranged vertically downward and is twisted in the circumferential direction, wherein the twisting directions of the first stirring arm 5231, the second stirring arm 5232 and the third stirring arm 5233 are the same, the twisting radius of the first stirring arm 5231 is larger than that of the third stirring arm 5233, and the twisting radius of the third stirring arm 5233 is larger than that of the second stirring arm 5232.

Specifically, please refer to fig. 4-5 again, the stirring paddle 523 includes a first stirring arm 5231, a second stirring arm 5232 and a third stirring arm 5233, the first stirring arm 5231, the second stirring arm 5232 and the third stirring arm 5233 are circumferentially disposed along the stirring rotation axis 522, a gap for material feeding and discharging and mixing is disposed between the stirring arms, the stirring arms are in a ivory-shaped structure and are arranged in a twisting manner, and the twisting directions of the three stirring arms are consistent, so as to facilitate stirring, mixing and crushing of the material.

Each stirring paddle arm takes the central axis of the stirring rotating shaft 522 as a reference, is in a spiral line structure from bottom to top, and can be set to a spiral lifting angle of 25-60 degrees from bottom to top, so that the stirring paddle arms can lift materials upwards, and can effectively lift the materials upwards to roll when in operation.

As can be seen from fig. 5, each of the stirring arms is disposed at different installation positions, that is, the turning radii of the three stirring arms are different, when looking down on the stirring paddle 523, the lower ends of the three stirring arms are arc-shaped and have different distances from the central axis of the stirring rotation shaft 522, the first stirring arm 5231 runs circumferentially along the inner wall surface of the containing unit 510, the second stirring arms 5232 are distributed at the outer side of the flow guide sleeve 535 for 3-8mm, that is, the outer wall of the flow guide sleeve 535 is disposed, and the third stirring arms 5233 are distributed between the inner wall of the containing unit 510 and the outer wall of the flow guide sleeve 535 for circumferential movement.

Each stirring arm can realize different circular motion tracks, the stirring arm positioned at the inner side (i.e., the second stirring arm 5232) can push and roll the materials inside towards the outer side for mixing, the stirring arm positioned at the middle (i.e., the third stirring arm 5233) can effectively stir and mix the materials, and the stirring arm positioned at the outer side (i.e., the first stirring arm 5232) can mix and stir the materials positioned at the periphery and adhered to the inner wall surface of the accommodating unit 510. The stirring paddle 523 can effectively lift and roll the materials, the materials adhered to the inner wall of the containing unit 510 are scraped down to be mixed, all-dimensional stirring without dead angles is achieved, the mixing effect is more ideal, and the stirring paddle 523 has the characteristics of all-dimensional stirring, spiral lifting and inner and outer rolling.

A specific embodiment is provided:

the materials enter the containing unit 510 from the feeding channel 525, the static scraper 524 can scrape the materials adhered to the inner wall of the feeding channel 525, after the materials enter the crushing and dispersing unit 530, the materials are crushed into small particle blocks by the crushing wheel 532, the high-speed rotation of the crushing wheel 532 presents a rolling circulation to generate a vortex, the materials spirally descend to the bottom of the vortex, the materials are sucked into the bottom by the thrust wheel 533 and then dispersed by the dispersing wheel 534, the dispersed materials pass through the shearing holes around the shearing wheel 536 and enter the outer side of the bottom of the containing unit 510, at this time, the materials enter the region of the stirring and mixing unit 520, the materials are stirred and mixed by the stirring paddle 523, the stirring paddle 523 is provided with three stirring arms, each stirring arm is respectively distributed on different circular running tracks, the materials can be stirred and mixed, pushed and rolled inwards and lifted upwards, the materials are lifted to the upper part of the containing unit 510, and enter the crushing and dispersing unit 530 for crushing and dispersing again under the action of the liquid guide sleeve 535. Meanwhile, at the same time when the material just enters the accommodating unit 510, a part of the material falls on the area where the stirring paddle 523 is located, the stirring paddle 523 stirs and mixes the peripheral material and lifts the material to the top of the crushing and dispersing unit 530, the material moves upward and returns to the inside of the crushing and dispersing unit 530 from the top of the crushing and dispersing unit 530, and the material enters the inside of the crushing and dispersing unit 530 and is dispersed and mixed by the crushing and dispersing unit 530. Consequently, the material has formed the circulation dispersion of a material and has mixed in holding unit 510, constantly at broken dispersion unit 530 and stirring mixing unit 520 between cyclic motion, can be quick with holding the material in the unit 510 and disperse the mixture, efficient, the homogeneity is good, stirring effect is good, and has reduced the settlement rate after the material dispersion mixes.

As a preferred embodiment of the present invention, the first driving assembly 300 includes a first motor 310 and a first transmission unit 320, the second driving assembly 400 includes a second motor 410 and a second transmission unit 420, one end of the first transmission unit 320 is in transmission connection with the output end of the first motor 310, the other end of the first transmission unit 320 is in transmission connection with the stirring rotation shaft 522, one end of the second transmission unit 420 is in transmission connection with the output end of the second motor 410, and the other end of the second transmission unit 420 is in transmission connection with the dispersing rotation shaft 531.

It should be noted that the first motor 310 is in transmission connection with the stirring rotating shaft 522 through a transmission unit, and the second motor 410 is in transmission connection with the dispersing rotating shaft 531 through a transmission unit, where the transmission unit may be a transmission chain, a transmission belt or a transmission gear, and may be set according to actual needs. In this embodiment, both the first motor 310 and the second motor 410 adopt transmission chains and servo motors, so as to ensure low-prevailing constant torque operation.

As a preferred embodiment of the present invention, the rack 200 includes a mounting frame (not shown) and a lifting assembly (not shown), the connecting end of the lifting assembly is fixed on the mounting frame, the first driving assembly 300 and the stirring and mixing unit 520 are both disposed on the mounting frame, and the second driving assembly 400, the accommodating unit 510 and the crushing and dispersing unit 530 are respectively disposed on the lifting end of the lifting assembly.

It should be noted that the lifting assembly can lift the second driving assembly, the accommodating unit 510 and the crushing and dispersing unit 530 so as to lift the second driving assembly 400, the accommodating unit 510 and the crushing and dispersing unit 530 at the lower end, and can be separated from the stirring and mixing unit 520 and the first driving assembly 300 at the upper end when in use, so as to facilitate cleaning and the like of the inside of the accommodating unit 510.

Specifically, lifting unit includes hydraulic pressure station 221, hydraulic cylinder 222 and promotion platform 223, hydraulic cylinder 222 all locates on the mounting bracket with hydraulic pressure station 221, hydraulic cylinder 222 connects on hydraulic pressure station 221, promote platform 223 and connect on hydraulic cylinder 222's output, second drive assembly 400, hold unit 510 and broken dispersion unit 530 and connect respectively on promoting platform 223, it is fixed slider (not sign in the figure) to be equipped with on the promotion platform 223, be equipped with on the mounting bracket with slider complex guide rail (not sign in the figure).

The containing unit 510 is fixedly installed on the lifting platform 223, a barrel of the containing unit 510 is provided with a groove matched with a top cover of the barrel, when the barrel is matched with the top cover to be sealed, a sealing element is further arranged to seal, the lifting platform 223 is subjected to lifting control through the hydraulic station 221 and the lifting hydraulic cylinder 222, a sliding block is installed on the lifting platform 223, a guide rail is installed on the rack 200, the sliding block is arranged in a matched mode with the guide rail to guide the lifting platform to do vertical positioning linear motion, and the containing unit 510 can be lifted to enable the inside of the containing unit 510 to be cleaned and cleaned more conveniently.

In use, the cylinder of the receiving unit 510 is disconnected from the top cover, and the second driving assembly 400, the receiving unit 510 and the crushing and dispersing unit 530 are lowered together by the lifting platform 223, so that the lifting platform can lower the cylinder of the receiving unit 510, and separate from the top cover at the upper end, the stirring and mixing unit 520 and the first driving assembly 300, so that the inside of the receiving unit 510 can be manually cleaned.

As a preferred embodiment of the present invention, the present invention further comprises a cooling assembly (not shown), the cooling assembly comprises a motor cooling unit 610 for cooling the first driving assembly 300 and the second driving assembly 400, and a jacket cooling unit (not shown) for cooling the accommodating unit 510, the motor cooling unit 610 is respectively communicated with the first driving assembly 300 and the second driving assembly 400, and the jacket cooling unit is disposed outside the accommodating unit 510.

Specifically, the motor cooling unit 610 is respectively communicated with the first driving assembly 300 and the second driving assembly 400, and the motor cooling unit 610 circularly introduces cooling liquid to cool the first driving assembly 300 and the second driving assembly 400, so as to ensure normal operation of the first driving assembly 300 and the second driving assembly 400. A jacket cooling unit is further provided outside the accommodating unit 510, since high temperature is easily generated by high-speed dispersion and mixing of the materials, and the jacket cooling unit is provided outside the accommodating unit 510, so that the materials and the accommodating unit 510 can be effectively cooled by providing circulating water with low temperature, and the temperature of the circulating water is generally set to 4-12 ℃.

Further, a feeding valve 230 is further disposed at the feeding port of the mixing assembly 500, and a discharging valve 240 is further disposed at the discharging port of the mixing assembly 500.

In detail, the feeding valve 230 is arranged at the feeding port of the feeding channel 525, and the feeding valve 230 and the discharging valve 240 are arranged, so that the material can be better controlled to enter and exit, and the feeding and discharging operation is facilitated. Meanwhile, a mechanical seal assembly (not shown) for sealing is further arranged, the mechanical seal assembly is arranged outside the stirring rotating shaft 522 and the dispersing rotating shaft 531, a bearing is further arranged outside the stirring rotating shaft 522 and the dispersing rotating shaft 531, and the mechanical seal assembly is mounted on the stirring rotating shaft 522 to ensure that the materials are dispersed and mixed in a vacuum state.

The present invention also provides a mixing method of the above-described dispersion mixer 100, comprising the steps of:

s1, adding a material into the containing unit 510 through the feeding channel 525;

s2, crushing and dispersing the materials under the action of the crushing and dispersing unit 530, enabling the dispersed materials to flow into the area of the stirring and mixing unit 520, enabling the stirring and mixing unit 520 to stir, mix and lift the peripheral materials, enabling the stirring and mixing unit 520 to push the materials to move upwards and return to the inside of the crushing and dispersing unit 530 from the upper part of the crushing and dispersing unit 530, and enabling the materials to be crushed and dispersed again through the crushing and dispersing unit 530 to form circular crushing, dispersing and mixing of the materials; wherein, the linear speed of the crushing and dispersing unit 530 is 5-32m/s, and the rotating speed of the stirring and mixing unit 520 is 5-30RPM;

and S3, after 20 to 40 minutes, discharging the fully crushed and mixed material from a discharge port.

It should be understood that the dispersing mixer 100 can form material circulation dispersion mixing, so that the powder and the liquid material just put into the containing unit 510 do not generate a lump agglomeration phenomenon, and the uniform circulative material mixing dispersion is performed from the center to the periphery in a circular dispersion manner, so that the materials form circulation dispersion mixing without a dead angle in the containing unit 510, and the materials in the containing unit 510 can be quickly dispersed and mixed uniformly, and the dispersion mixing efficiency is high and the uniformity is good.

The dispersing mixer 100 homogenizes in an internal circulation mixing mode, high-strength shearing force and kneading force are not generated in the system homogenizing process, the surface layer of material particles is not easy to damage, and the slurry is ensured to be more uniform and stable; compared with the existing slurry mixing and stirring method and equipment, the device has the advantages that the energy consumption is saved by more than 40%, the preparation of the lithium battery slurry can be completed within 30 minutes, the speed is increased by more than 3 times, the operation is simple, and the cleaning is simple and easy.

A specific embodiment is provided: when the dispersion mixer 100 mixes solid-liquid mixtures with the particle size of less than 5um and the solid content of 60-65%, the linear velocity of the dispersion is set to 15-30m/s, the speed of the stirring paddle 523 is set to 5-30RPM, the mixing of the materials can be completed within 30min, the viscosity of the solid-liquid mixtures is controlled to be 1800cps +/-300 cps, the mixing uniformity is better than 99.9%, the highest temperature is less than 50 ℃, the sedimentation rate of the solid-liquid mixtures is less than 1% within 72 hours of static placement, the sedimentation rate is better than that of the conventional mixing effect by more than 2 times, and the material dispersion fineness is less than 25um.

Data comparison with a common stirrer is provided, and the mixing amount of the materials stirred by 500L/h is calculated in the table:

comparison point	Double-planet mixer	Dispersion mixer
			Power of	95KW	70KW
Stirring and mixing mode	Double-planet oar	Stirring paddle and dispersing wheel
			Time of stirring	4-5 hours	50 minutes
Uniformity of the film	90-95%	Is better than 99 percent
			Fineness of fineness	25um	25 um
Static sedimentation of material	4h sedimentation>5%	The sedimentation rate is less than 1 percent within 72 hours
			Weight of the apparatus	16-18T	5-6T
Floor area of equipment	300 square meter	200 square meter

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (8)

1. A dispersion mixer is characterized by comprising a frame, a first driving component, a second driving component and a mixing component which are respectively arranged on the frame,

the mixing assembly comprises an accommodating unit, a stirring and mixing unit and a crushing and dispersing unit which are respectively arranged on the rack, the accommodating unit is provided with a stirring and accommodating cavity, and the stirring and mixing unit, the accommodating unit and the crushing and dispersing unit are sequentially arranged along the vertical direction;

the first end of the stirring and mixing unit is in transmission connection with the driving end of the first driving assembly, the second end of the stirring and mixing unit is vertically arranged downwards to extend into the stirring and accommodating cavity from the top of the accommodating unit, and a feeding channel communicated with the stirring and accommodating cavity is arranged on the stirring and mixing unit;

the first end of the crushing and dispersing unit is arranged at the bottom of the accommodating unit and is positioned in the stirring accommodating cavity, and the second end of the crushing and dispersing unit extends out of the accommodating unit and is in transmission connection with the driving end of the second driving assembly;

the stirring and mixing unit comprises a fixed support, a stirring rotating shaft and a stirring paddle, the fixed support is fixedly arranged on the rack, the stirring rotating shaft is rotatably supported on the fixed support around the central axis of the stirring rotating shaft, the driving end of the first driving assembly is in transmission connection with the stirring rotating shaft, the feeding channel is arranged in the stirring rotating shaft, the first end of the stirring paddle is fixedly arranged on the stirring rotating shaft, the second end of the stirring paddle is arranged downwards along the vertical direction and in a twisting manner along the circumferential direction, and the second end of the stirring paddle is used for covering the crushing and dispersing unit;

the second driving assembly drives the crushing and dispersing unit to rotate, so that the crushing and dispersing unit crushes the materials entering the stirring and accommodating cavity through the feeding channel and disperses the materials to the area of the stirring paddle, and the first driving assembly drives the stirring rotating shaft to drive the stirring paddle to rotate, so that the materials in the area of the stirring paddle move upwards and return to the inside of the crushing and dispersing unit from the top of the crushing and dispersing unit;

the stirring and mixing unit further comprises a static scraper, the static scraper comprises a mounting end used for being connected with the fixed support and a scraping end which is axially arranged and extends into the feeding channel, and the scraping end of the static scraper is abutted against the inner wall of the stirring rotating shaft;

the stirring rake includes the edge first rabbling arm, second rabbling arm and the third rabbling arm of stirring rotation axis's circumference interval arrangement, first rabbling arm sets up along vertical downwards and along the circumference turn-knob, the second rabbling arm sets up along vertical downwards and along the circumference turn-knob, the third rabbling arm sets up along vertical downwards and along the circumference turn-knob, wherein first rabbling arm the second rabbling arm and the turn-knob direction of third rabbling arm is unanimous, the turn-knob radius of first rabbling arm is greater than the turn-knob radius of third rabbling arm, the turn-knob radius of third rabbling arm is greater than the turn-knob radius of second rabbling arm.

2. The dispersion mixer of claim 1, wherein the stirring rotation shaft is disposed coaxially with the housing unit, and the feed passage is provided on a center axis of the stirring rotation shaft and is disposed to penetrate the stirring rotation shaft in an axial direction.

3. The dispersing mixer of claim 1, wherein the crushing and dispersing unit comprises a dispersing rotating shaft, and a crushing wheel, a thrust wheel and a dispersing wheel which are sequentially connected to the dispersing rotating shaft from top to bottom, the crushing and dispersing unit further comprises a liquid flow guide sleeve and a shearing wheel, the shearing wheel is covered outside the dispersing wheel, the liquid flow guide sleeve is arranged above the dispersing wheel and covered outside the crushing wheel and the thrust wheel, and the dispersing rotating shaft extends out of the accommodating unit and is in transmission connection with a driving end of the second driving assembly.

4. The dispersion mixer according to claim 3, wherein the first drive assembly includes a first motor and a first transmission unit, and the second drive assembly includes a second motor and a second transmission unit, one end of the first transmission unit is drivingly connected to an output end of the first motor, the other end of the first transmission unit is drivingly connected to the stirring rotation shaft, one end of the second transmission unit is drivingly connected to an output end of the second motor, and the other end of the second transmission unit is drivingly connected to the dispersion rotation shaft.

5. The dispersing mixer of claim 1 wherein the frame includes a mounting frame and a lifting assembly, the connecting end of the lifting assembly is fixedly disposed on the mounting frame, the first drive assembly and the mixing unit are disposed on the mounting frame, and the second drive assembly, the receiving unit and the crushing and dispersing unit are disposed on the lifting end of the lifting assembly respectively.

6. The dispersion mixer according to claim 1, further comprising a cooling assembly including motor cooling units for cooling the first and second drive assemblies and jacket cooling units for cooling the housing unit, the motor cooling units being in communication with the first and second drive assemblies, respectively, the jacket cooling units being provided outside the housing unit.

7. The dispersive mixing machine according to claim 1, wherein a feed valve is further provided at the feed port of the mixing assembly and a discharge valve is further provided at the discharge port of the mixing assembly.

8. A mixing method of a dispersion mixer, characterized by being used in the dispersion mixer according to any one of claims 1-7, comprising the steps of:

s1, adding materials into a containing unit through a feeding channel;

s2, crushing and dispersing the materials under the action of the crushing and dispersing unit, enabling the dispersed materials to flow into the area of the stirring and mixing unit, stirring and mixing the peripheral materials by the stirring and mixing unit, lifting, pushing the materials to move upwards by the stirring and mixing unit and returning the materials to the inside of the crushing and dispersing unit from the upper part of the crushing and dispersing unit, and crushing and dispersing the materials again by the crushing and dispersing unit to form circular crushing, dispersing and mixing of the materials; wherein, the linear speed of the crushing and dispersing unit is 5-32m/s, and the rotating speed of the stirring and mixing unit is 5-30RPM;

and S3, after 20 to 40 minutes, discharging the fully crushed and mixed material from a discharge port.

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