Apparatus for dry powder mixing and fibrillation

Abstract

The utility model relates to the field of battery manufacturing, in particular to equipment for dry-method powder mixing and fibrillation. The equipment comprises a stirring tank, a stirring motor, a knife tackle and a temperature control assembly. The cutter set comprises a connecting rod and a plurality of sets of cutters. One end of the connecting rod penetrates through the bottom of the stirring tank and is in power connection with the stirring motor. The multiple sets of cutters are arranged at the end, located in the stirring tank, of the connecting rod in a sleeving mode and fixedly connected with the connecting rod. The temperature control assembly is arranged on the outer side of the stirring tank and used for heating or cooling the stirring tank. The mixing and fibrillation of a powder material are realized at different rotating speeds through the cutter group arranged in the stirring tank, and the temperature in the stirring tank is controlled through the temperature control assembly, so that stirring and fibrillation can be carried out at the optimal temperature, and the requirements of a dry-method electrode manufacturing process can be met. The method has the advantages of low cost, high efficiency, excellent fibrillation effect, simplicity in operation and the like.

Description

Technical Field

[0001] The utility model relates to the field of battery manufacturing, in particular to a device for dry powder mixing and fibrillation. Background Art

[0002] All-solid-state battery electrode manufacturing technologies are primarily divided into two categories: wet and dry processes. Wet processes present issues such as low safety, poor electrode stability, and low conductivity. Dry processes, on the other hand, effectively avoid these issues.

[0003] Currently, when manufacturing electrodes for all-solid-state batteries using a dry electrode manufacturing process, the electrode materials include powder materials such as active materials, binders, and conductive agents. Electrode production requires that the individual powder materials be uniformly mixed and fibrillated before use. However, existing fibrillation equipment cannot meet the mixing requirements of the powder materials, and the fibrillation effect is also insufficient to meet the requirements of the dry electrode manufacturing process.

[0004] Therefore, there is an urgent need for a fibrillation device that can meet the requirements of the dry electrode manufacturing process. Utility Model Content

[0005] The utility model provides a device for dry powder mixing and fibrillation, so as to solve the problem that the fibrillation equipment in the prior art cannot meet the requirements of the dry electrode manufacturing process.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0007] In a first aspect, embodiments of the present invention provide an apparatus for dry powder mixing and fibrillation, comprising: a mixing tank, a mixing motor, a blade assembly, and a temperature control assembly. The blade assembly includes a connecting rod and multiple blade sets. One end of the connecting rod extends through the bottom of the mixing tank and is connected to the power supply of the mixing motor. The multiple blade sets are mounted on one end of the connecting rod within the mixing tank and are fixedly connected to the connecting rod. The temperature control assembly is located outside the mixing tank and is used to heat or cool the mixing tank.

[0008] In some embodiments, the plurality of blades include: a bottom stirring blade, a scattering blade, a shearing blade, and a top stirring blade. The bottom stirring blade, the scattering blade, the shearing blade, and the top stirring blade are sequentially sleeved on the connecting rod in order from bottom to top.

[0009] In some embodiments, the bottom stirring tool includes at least one bottom stirring blade and a first connecting portion; the first connecting portion is sleeved on the connecting rod and fixedly connected to the connecting rod, one end of the bottom stirring blade is connected to the first connecting portion, and the other end extends an arc-shaped scraper upward; the distance between the bottom stirring blade and the bottom of the stirring tank is 0.5-1mm, the angle between the bottom stirring blade and the bottom of the stirring tank in the horizontal direction is 10° to 30°, and the thickness of the bottom stirring blade is 2mm to 5mm.

[0010] In some embodiments, the scattering tool includes at least one scattering blade; the scattering blade is evenly arranged at a position where the stirring blade is not arranged on the first connecting portion, and the scattering blade is arranged parallel to the bottom of the mixing tank; one end of the scattering blade is connected to the first connecting portion, and the other end extends upward to form a triangular extension portion, the angle between the extension portion and the scattering blade is 30° to 60°, and the thickness of the scattering blade is 1 mm to 3 mm.

[0011] In some embodiments, the shearing tool includes at least one shearing blade and a second connecting portion; the second connecting portion is mounted on the connecting rod and fixedly connected to the connecting rod, close to the first connecting portion, the width of the first end of the shearing blade is greater than the width of the second end, the first end is connected to the second connecting portion, and the shearing blade is tilted upward; the angle between the shearing blade and the bottom of the mixing tank in the vertical direction is 20° to 50°, and the thickness of the shearing blade is 1mm to 3mm.

[0012] In some embodiments, the top stirring tool includes at least one top stirring blade and a third connecting portion; the third connecting portion is mounted on the connecting rod and is movably connected to the connecting rod through a fastener, and the distance between the third connecting portion and the second connecting portion is greater than or equal to 10 mm; one end of the top stirring blade is connected to the first connecting portion, and the angle between the top stirring blade and the bottom of the stirring tank in the horizontal direction is 10° to 30°, and the thickness of the bottom stirring blade is 2 mm to 5 mm.

[0013] In some embodiments, the temperature control component includes a heating component and a cooling component. The heating component includes a heating rod and a heating wire, and the cooling component includes a cooling plate, a liquid cooler or a heat exchanger.

[0014] In some embodiments, the apparatus further comprises a bottom plate and a base. The stirring tank and stirring motor are disposed on the base. One end of the base is rotatably connected to the bottom plate via a rotating shaft, and the other end of the base is fixedly connected to the bottom plate via a fixed connector.

[0015] In some embodiments, the apparatus further comprises a transmission assembly. The transmission assembly comprises a first gear, a second gear, and a belt. The first gear is fixedly connected to a connecting rod extending from the mixing tank, the second gear is fixedly connected to a drive shaft of the mixing motor, and the first and second gears are connected by a belt.

[0016] In some embodiments, the transmission assembly further includes: a transmission control module, which is electrically connected to the stirring motor and is used to control the running time and speed of the stirring motor.

[0017] The present invention has the following advantages: a blade assembly disposed within the mixing tank achieves mixing and fibrillation of the powdered material at different rotational speeds, and a temperature control assembly controls the temperature within the mixing tank, enabling both mixing and fibrillation to occur at the optimal temperature, meeting the requirements of the dry electrode manufacturing process. The invention has the advantages of low cost, high efficiency, excellent fibrillation effect, and simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of an apparatus for powder mixing and fibrillation provided in one embodiment of the present application;

[0019] Figure 2 An oblique view of a knife assembly provided in one embodiment of the present application;

[0020] Figure 3 A front view of a knife assembly provided in one embodiment of the present application;

[0021] Figure 4 A schematic structural diagram of an apparatus for powder mixing and fibrillation provided in another embodiment of the present application;

[0022] Figure 5 A schematic diagram of a scenario in which the equipment for powder mixing and fibrillation provided in one embodiment of the present application is used.

[0023] In the figure: 11-mixing tank; 12-knife group; 121-connecting rod; 122-bottom mixing tool; 123-scattering tool; 124-cutting tool; 125-top mixing tool; 126-first gear; 127-bearing; 13-mixing motor; 132-second gear; 14-temperature control component; 15-base; 16-bottom plate; 17-rotating shaft; 18-fixed connector; 19-belt. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the application.

[0026] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, and are merely for the convenience of describing the application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" and the like are only used for differentiation and cannot be understood as indicating or implying relative importance.

[0028] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided", "installed", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0030] Figure 1 The structural schematic diagram of the device for dry powder mixing and fibrillation provided by an embodiment of the application is shown in the figure; Figure 2 The oblique view of the knife set provided by an embodiment of the application is shown in the figure; Figure 3 The front view of the knife set provided by an embodiment of the application is shown in the figure.

[0031] Reference Figure 1The present invention provides a device for dry powder mixing and fibrillation, comprising: a stirring tank 11, a stirring motor 13, a knife group 12 and a temperature control component 14. Figure 2 and Figure 3 The blade assembly includes a connecting rod 121 and multiple sets of blades. One end of the connecting rod 121 passes through the bottom of the mixing tank 11 and is powered by the mixing motor 13. The multiple sets of blades are mounted on the end of the connecting rod 121 located inside the mixing tank and are fixedly connected to the connecting rod 121. The temperature control assembly 14 is located outside the mixing tank 11 and is used to heat or cool the mixing tank 11.

[0032] In some embodiments, the mixing tank 11 can be made of a metal material and be shaped as a hollow cylinder, with a through hole defined at the bottom of the mixing tank 11. A bearing 127 can be provided on the connecting rod 121, enabling the connecting rod 121 to rotate via the bearing 127. The bearing 127 can be disposed within the through hole at the bottom of the mixing tank 11 and fixedly connected to the through hole.

[0033] In some embodiments, the stirring tank 11 may also be provided with a lid (not shown in the figure), which may be fixedly connected to the stirring tank 11 by means of threads, fixed connectors (such as screws, buckles), or electromagnets, so that the interior of the stirring tank 11 is a closed space. The lid may be connected to or separated from the stirring tank 11, and this is not limited in this application.

[0034] In some embodiments, the temperature control component 14 may include a heating component and a cooling component. The heating component includes a heating rod and a heating wire, and the cooling component includes a cooling plate, a liquid cooler or a heat exchanger.

[0035] In some embodiments, the temperature control component 14 is disposed outside the stirring tank 11 and can be Figure 1 As shown in the figure, it is provided on the side of the mixing tank 11. For example, it can be fixed to the side of the mixing tank 11 by a fixing member (such as a clamp, a band, glue, a screw, etc.). When the heating component is an electric heating wire and the cooling component is a liquid cooler, the heating wire and the liquid cooling tube of the liquid cooler can be wrapped around the outside of the mixing tank 11, and the heating wire and the liquid cooling tube can be arranged at intervals.

[0036] In some embodiments, the temperature control component 14 is disposed outside the stirring tank 11, and the temperature control component 14 can be disposed outside the bottom of the stirring tank 11. For example, when the heating component is a heating wire and the cooling component is a liquid cooler, the heating wire and the liquid cooling tube can be disposed in spaced concentric circles around the through hole at the bottom of the stirring tank 11.

[0037] In some embodiments, the temperature control assembly 14 may further include a temperature sensor and a controller. The temperature sensor may be disposed within the mixing tank 11 to collect the temperature within the mixing tank 11. The controller may be electrically connected to the temperature sensor, the heating assembly, and the cooling assembly. The controller may receive feedback from the temperature sensor indicating the temperature within the mixing tank 11 and control the operation of the heating assembly or the cooling assembly according to a preset temperature target to adjust the temperature within the mixing tank 11 to meet the current target temperature.

[0038] In some embodiments, the target temperature within the stirring tank 11 can be determined based on the current working stage. For example, when the current working stage is the mixing stage, the target temperature within the stirring tank 11 can be no higher than 19°C. When the current working stage is the fibrillation stage, the target temperature within the stirring tank 11 can be greater than or equal to 70°C and less than or equal to 120°C.

[0039] Mixing at a temperature no higher than 19°C ensures that the powder material does not change in properties during the mixing process and can mix the powder material evenly. Fibrillation at a temperature between 70°C and 120°C provides good shear force to the material, ensuring that the powder material has a good fibrillation effect.

[0040] In some embodiments, reference Figure 2 and Figure 3 The plurality of blades include a bottom mixing blade 122, a scattering blade 123, a shearing blade 124, and a top mixing blade 125. The bottom mixing blade 122, the scattering blade 123, the shearing blade 124, and the top mixing blade 125 are sequentially sleeved on the connecting rod 121 in order from bottom to top.

[0041] In some embodiments, the cutting tool may be made of a material having a certain strength and high temperature resistance, such as stainless steel, iron, or polymer material.

[0042] In some embodiments, the drawings provided herein illustrate four sets of cutting tools. However, in actual applications, the number of cutting tools can be adjusted based on process requirements, material quantity, and other factors. Those skilled in the art will understand that, based on the technical solutions of the application, adding or reducing cutting tools should also fall within the scope of protection of the claims of this application.

[0043] In some embodiments, the bottom stirring blade 122 includes at least one bottom stirring blade and a first connecting portion. The first connecting portion is mounted on and fixedly connected to the connecting rod 121. One end of the bottom stirring blade is connected to the first connecting portion, and the other end extends upwardly from an arc-shaped scraper. The distance between the bottom stirring blade and the bottom 11 of the stirring tank is 0.5-1 mm, the angle between the bottom stirring blade and the bottom of the stirring tank 11 in the horizontal direction is 10° to 30°, and the thickness of the bottom stirring blade is 2 mm to 5 mm.

[0044] In some embodiments, the bottom stirring blade 122 may include two bottom stirring blades, which are disposed opposite each other on either side of the first connecting portion. When the bottom stirring blade 122 rotates, it can provide lift to the powder material deposited at the bottom of the stirring tank 11, thereby fully stirring the powder material in the stirring tank 11.

[0045] In some embodiments, the scattering tool 123 includes at least one scattering blade; the scattering blade is evenly arranged at a position where the stirring blade is not arranged on the first connecting portion, and the scattering blade is arranged parallel to the bottom of the stirring tank 11; one end of the scattering blade is connected to the first connecting portion, and the other end extends a triangular extension portion upward, and the angle between the extension portion and the scattering blade is 30° to 60°, and the thickness of the scattering blade is 1 mm to 3 mm.

[0046] In some embodiments, the scattering tool 123 may include four scattering blades, and the four scattering blades are evenly arranged around the first connecting portion (one is arranged every 90°). The angle between the extension of the scattering blade and the scattering blade is preferably 45°. The height at which the scattering tool 123 is arranged on the first connecting portion (relative to the bottom of the stirring tank 11) is slightly higher than the bottom stirring tool 122. For example, if the distance between the bottom stirring blade and the bottom 11 of the stirring tank is 1mm, then the distance between the scattering tool 123 and the bottom 11 of the stirring tank is 3mm. Alternatively, if the distance between the bottom stirring blade and the bottom 11 of the stirring tank is 3mm, then the distance between the scattering tool 123 and the bottom 11 of the stirring tank is 5mm. By arranging an extension on the scattering blade, the powder material raised after being stirred by the bottom stirring tool 122 can be scattered, so that the powder material is evenly distributed in the stirring tank 11.

[0047] In some embodiments, the shearing tool includes at least one shearing blade and a second connecting portion; the second connecting portion is mounted on the connecting rod 121 and fixedly connected to the connecting rod 121, close to the first connecting portion, the width of the first end of the shearing blade is greater than the width of the second end, the first end is connected to the second connecting portion, and the shearing blade is tilted upward; the angle between the shearing blade and the bottom of the mixing tank in the vertical direction is 20° to 50°, and the thickness of the shearing blade is 1mm to 3mm.

[0048] In some embodiments, the second connecting portion and the first connecting portion can be provided separately, or can also be integrally formed. When provided separately, the distance between the second connecting portion and the first connecting portion can be set according to process requirements, and this application does not impose any restrictions on this.

[0049] Shearing tool 124 may include two shearing blades, disposed opposite each other on either side of the second connecting portion. The vertical angle between the shearing blades and the bottom of the mixing tank is preferably 20°. This arrangement of the shearing blades allows shearing tool 124 to provide both dispersing and shearing forces during rotation, resulting in a better fibrillation effect.

[0050] In some embodiments, the top stirring tool includes at least one top stirring blade and a third connecting portion; the third connecting portion is sleeved on the connecting rod 121 and is movably connected to the connecting rod 121 through a fastener, and the distance between the third connecting portion and the second connecting portion is greater than or equal to 10 mm; one end of the top stirring blade is connected to the first connecting portion, and the angle between the top stirring blade and the bottom of the stirring tank 11 in the horizontal direction is 10° to 30°, and the thickness of the bottom stirring blade is 2 mm to 5 mm.

[0051] In some embodiments, the top stirring blade 125 may include two top stirring blades, which are disposed opposite each other on either side of the third connecting portion. The third connecting portion can be moved on the connecting rod 121 to position the top stirring blade 125 at the top of the mixing tank 11. When the top stirring blade 125 rotates, it can fully stir the powder material floating at the top of the mixing tank 11, making it more uniform.

[0052] In some embodiments, reference Figure 1 The apparatus for powder mixing and fibrillation further includes a bottom plate 16 and a base 15. The mixing tank 11 and the mixing motor 13 are mounted on the base 15. One end of the base 15 is rotatably connected to the bottom plate 16 via a rotating shaft 17, and the other end of the base 15 is fixedly connected to the bottom plate 16 via a fixing member 18.

[0053] Figure 4 This is a schematic structural diagram of an apparatus for dry powder mixing and fibrillation provided in another embodiment of the present application.

[0054] In some embodiments, reference Figure 4 The powder mixing and fibrillation apparatus further includes a transmission assembly. The transmission assembly includes a first gear 126, a second gear 132, and a belt 19. The first gear 126 is fixedly connected to the connecting rod 121 extending from the mixing tank 11, and the second gear 132 is fixedly connected to the drive shaft of the mixing motor 13. The first gear 126 and the second gear 132 are connected in a power connection via the belt 19.

[0055] In some embodiments, the transmission assembly may further include a transmission control module, which may be electrically connected to the stirring motor 13 to control the running time and speed of the stirring motor, where the unit of speed is revolutions per minute (rpm).

[0056] In some embodiments, for example, the transmission control module includes a processor and a storage medium connected to the processor, wherein the storage medium stores an instruction set generated according to a pre-programmed program. When the processor responds to the control instruction and invokes the instruction set, at least one of the following actions can be performed: starting the stirring motor, stopping the stirring motor, or adjusting the speed of the stirring motor.

[0057] As an example, the control instructions may be generated by an electronic device connected to the processor, such as a smartphone, tablet computer, laptop computer, desktop computer, server, or other electronic device connected to the processor. Alternatively, the transmission control module may also include an input module, and the control instructions may be generated based on information received by the input module.

[0058] In some embodiments, the apparatus may include three stages during fibrillation: a stirring stage, a fibrillation stage, and a granulation stage. For example, the stirring stage may have a rotational speed of 800 to 1000 rpm and a duration of 3 to 5 minutes; the fibrillation stage may have a rotational speed of 1000 to 13000 rpm and a duration of 5 to 7 minutes; and the stirring stage may have a rotational speed of 8000 to 12000 rpm and a duration of 4 to 10 seconds.

[0059] In some embodiments, when the received control instruction indicates: running at a speed of 800 for 5 minutes in the stirring stage, running at a speed of 12,000 for 3 minutes in the fibrillation stage, and running at a speed of 11,000 for 5 seconds in the granulation stage, the transmission control module calls the instruction set according to the control instruction, instructing the stirring motor to run at a speed of 800 for 5 minutes, then adjust the speed to 12,000 for 3 minutes, and finally adjust the speed to 11,000 for 5 seconds and turn off the stirring motor.

[0060] Figure 5 A schematic diagram of a scenario in which the equipment for dry powder mixing and fibrillation provided in one embodiment of the present application is used.

[0061] In some embodiments, reference Figure 5 , wherein, after the powder material in the stirring tank 11 is stirred and fibrillated, the fixed connection 18 can be opened and the base 15 can be lifted to pour out the fibrillated powder material in the stirring tank 11.

[0062] In some embodiments, Figure 1 In the manual operation, the fixed connector 18 is a buckle. The buckle can be opened manually, the base 15 can be lifted, and the powder material after fibrillation can be poured out.

[0063] In some other embodiments, the fixed connector 18 can be configured as an electrically controlled magnetic component, and a power component (such as a cylinder, motor, etc.) can be provided on the bottom plate 16 and the base 15 to achieve automated production. For example, in this embodiment, the controller can control the electrically controlled magnetic component to release the relative fixation between the base 15 and the bottom plate 16. The controller can then control the power component to lift the base 15 and pour out the fibrillated powder material.

[0064] It should be noted that in this application, circuits, controllers, and other contents that can be undoubtedly determined by those skilled in the art are not described in detail. Those skilled in the art can undoubtedly derive specific implementation plans based on the contents of this application.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An apparatus for dry powder mixing and fibrillation, characterized in that: include: Mixing tank, mixing motor, knife set and temperature control components; The knife set includes a connecting rod and multiple sets of knives; One end of the connecting rod passes through the bottom of the stirring tank and is connected to the stirring motor; The multiple sets of cutting tools are sleeved on one end of the connecting rod located in the mixing tank and are fixedly connected to the connecting rod; The temperature control component is arranged outside the stirring tank and is used to heat or cool the stirring tank; The plurality of tool sets include: Bottom mixing tool, breaking tool, shearing tool and top mixing tool; The bottom stirring tool, the breaking tool, the shearing tool and the top stirring tool are sequentially sleeved on the connecting rod in order from bottom to top.

2. The device according to claim 1, characterized in that The bottom stirring tool comprises at least one bottom stirring blade and a first connecting portion; The first connecting portion is sleeved on the connecting rod and fixedly connected to the connecting rod, one end of the bottom stirring blade is connected to the first connecting portion, and the other end extends upward to form an arc-shaped scraper; The distance between the bottom stirring blade and the bottom of the stirring tank is 0.5-1 mm, the angle between the bottom stirring blade and the bottom of the stirring tank in the horizontal direction is 10° to 30°, and the thickness of the bottom stirring blade is 2 mm to 5 mm.

3. The device according to claim 2, characterized in that The scattering tool comprises at least one scattering blade; The scattering blades are evenly arranged at positions where the stirring blades are not arranged on the first connecting portion, and the scattering blades are arranged parallel to the bottom of the stirring tank; One end of the scattering blade is connected to the first connecting portion, and the other end extends upward to form a triangular extension portion. The angle between the extension portion and the scattering blade is 30° to 60°, and the thickness of the scattering blade is 1mm to 3mm.

4. The device according to claim 2, characterized in that The shearing tool comprises at least one shearing blade and a second connecting portion; The second connecting portion is sleeved on the connecting rod and fixedly connected to the connecting rod, close to the first connecting portion, the width of the first end of the shearing blade is greater than the width of the second end, the first end is connected to the second connecting portion, and the shearing blade is tilted upward; The included angle between the shearing blade and the bottom of the stirring tank in the vertical direction is 20° to 50°, and the thickness of the shearing blade is 1 mm to 3 mm.

5. The device according to claim 4, characterized in that The top stirring tool comprises at least one top stirring blade and a third connecting portion; The third connecting portion is sleeved on the connecting rod and movably connected to the connecting rod through a fastener, and the distance between the third connecting portion and the second connecting portion is greater than or equal to 10 mm; One end of the top stirring blade is connected to the first connecting portion, the angle between the top stirring blade and the bottom of the stirring tank in the horizontal direction is 10° to 30°, and the thickness of the bottom stirring blade is 2mm to 5mm.

6. The device according to claim 1, characterized in that The temperature control component includes a heating component and a cooling component. The heating component includes a heating rod and a heating wire. The cooling component includes a cooling plate, a liquid cooler or a heat exchanger.

7. The device according to any one of claims 1 to 6, characterized in that The device also includes: a bottom plate and a base; The stirring tank and the stirring motor are arranged on the base; One end of the base is rotatably connected to the bottom plate via a rotating shaft, and the other end of the base is fixedly connected to the bottom plate via a fixed connecting piece.

8. The device according to claim 7, characterized in that The device further comprises: a transmission assembly; The transmission assembly includes a first gear, a second gear and a belt; The first gear is fixedly connected to the connecting rod passing through the stirring tank, the second gear is fixedly connected to the transmission shaft of the stirring motor, and the first gear and the second gear are connected by the belt power.

9. The device according to claim 8, characterized in that The transmission assembly further includes a transmission control module, which is electrically connected to the stirring motor and is used to control the running time and speed of the stirring motor.

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