Dry powder stirring device

Abstract

The utility model relates to the technical field of stirring, and discloses a dry powder stirring device which comprises a barrel part, a stirring part and a wall scraping part, the barrel part sinks inwards to form a stirring cavity, the barrel part is provided with a temperature control assembly, and the temperature control assembly controls the temperature of the barrel part; the stirring part is arranged in the stirring cavity; the wall scraping part is arranged on one side, close to the inner wall of the barrel part, of the stirring cavity. Through the functional design of stirring and temperature control, the stirring part and the wall scraping part are adopted to stir powder, and the temperature control assembly is combined to cool or heat the powder, so that stirring and fiberizing of the powder are realized, the technological process is simple and convenient, the energy consumption is low, the function integration of the device is strong, the overall structure is simple and compact, and the occupied area is small.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of stirring, specifically relates to a dry powder stirring device. BACKGROUND

[0002] Stirring is to make gas, liquid and even suspended particles in the solution mix uniformly by some kind of circulation of stirrer. Stirring is a common operation in organic preparation experiment, which aims to mix reactants sufficiently, heat uniformly, shorten reaction time and improve reaction yield.

[0003] The existing stirring technology usually adopts traditional wet stirring machine to mix powder for a long time, and then uses airflow mill equipment to disperse the mixed powder again. The mixed powder after dispersion is baked in an oven for half an hour for fiberization reaction, and then the fiberized mixed powder is further fiberized by an internal mixer. The above steps are completed to finish the stirring fiberization.

[0004] Since the above steps need to use four kinds of equipment, i.e. traditional stirring machine, airflow mill, oven and internal mixer, the use of equipment is various, which not only occupies large area, but also makes the whole process flow complicated and complex, and the energy consumption is high. UTILITY MODEL CONTENTS

[0005] In order to solve the problems of the prior art, the utility model provides a dry powder stirring device, which realizes stirring fiberization of powder by stirring and temperature control function design, adopts stirring part and wall scraping part to stir powder, and combines temperature control assembly to cool or heat the powder, so that the process flow is simple and convenient, the energy consumption is small, the device function integration is strong, the overall structure is simple and compact, and the area occupied is small.

[0006] The technical effects achieved by the utility model are realized by the following aspects:

[0007] The utility model provides a dry powder stirring device, which comprises a barrel part, the barrel part is recessed to form a stirring cavity, and the barrel part is provided with a temperature control assembly, and the temperature control assembly controls the temperature of the barrel part.

[0008] A stirring part is arranged in the stirring cavity; and

[0009] A wall scraping part is arranged on the inner wall side of the stirring cavity close to the barrel part.

[0010] In some implementations, the barrel part comprises an inner shell and an outer shell, the inner shell and the outer shell are sealingly connected to form a first temperature control area, and the temperature control assembly is arranged in the first temperature control area.

[0011] In some implementations, the temperature control assembly comprises a temperature control pipe and a control valve, the temperature control pipe is arranged around the outer wall of the inner shell, the control valve is arranged in communication with the temperature control pipe, and the control valve penetrates the outer shell.

[0012] In some implementations, the inside of the stirring part is a hollow structure, and a second temperature control area is formed.

[0013] In some implementations, the stirring part comprises a roller body and a dispersion disc, and the dispersion disc is fixedly connected with the roller body.

[0014] In some implementations, the dispersion disc comprises a disc body and a protruding block, and the protruding block is arranged in an annular array on the edge of the disc body.

[0015] In some implementations, the protruding block is provided with a dispersion roller penetratingly.

[0016] In some implementations, the wall scraping part comprises a rotating part and a first scraper, the upper end of the first scraper is connected with the rotating part, and the first scraper is arranged in the stirring cavity close to the inner wall of the inner shell.

[0017] In some implementations, the wall scraping part further comprises a second scraper, the second scraper is connected to the end of the first scraper away from the rotating part, and is arranged intersecting with the first scraper and forms an angle alpha.

[0018] In some implementations, the first scraper is provided with an adjusting hole and a bolt, the bolt is arranged through the adjusting hole and the second scraper to fixedly connect the second scraper with the first scraper.

[0019] In summary, the utility model has at least the following advantages:

[0020] 1. The dry powder stirring device provided by the utility model has the functions of stirring and temperature control, adopts a stirring part and a wall scraping part to stir the powder, the temperature control assembly cools the powder during the stirring process, avoids the mixed powder from generating heat due to friction caused by mutual collision and friction, and ensures the stability of the material structure during the stirring process. During the fiberization process, the temperature control assembly heats the powder, so that the mixed powder generates a physical reaction and becomes a strip-shaped fiber, thereby realizing the stirring and fiberization of the powder. The overall process is simple and convenient, the energy consumption is small, the device has high integration, the structure is simple and compact, and the device occupies a small area.

[0021] 2. The dry powder stirring device, which integrates the functions of stirring and temperature control through the stirring device, realizes fiberization of mixed powder, simplifies the overall process flow, effectively improves production efficiency, avoids the phenomenon of serious heating of battery finished products caused by impurities and foreign matters in the operation process, ensures the production quality of the battery, effectively avoids the occurrence of short circuit, fire explosion and other phenomena, and improves the safety of battery use. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structure schematic view of the dry powder stirring device in embodiment 1.

[0023] Figure 2 It is a perspective structure schematic view of the barrel part in embodiment 1.

[0024] Figure 3 It is Figure 2 It is an A-A sectional structure schematic view of the barrel part.

[0025] Figure 4 It is a structure schematic view of the stirring part in embodiment 2.

[0026] Figure 5 It is a structure schematic view of the wall scraping part in embodiment 2.

[0027] Figure 6 It is a structure schematic view of the wall scraping part in embodiment 3.

[0028] Figure 7 It is another structure schematic view of the wall scraping part in embodiment 3.

[0029] Markings in the figure:

[0030] 1, barrel part, 11, stirring cavity, 12, temperature control assembly, 121, temperature control pipe, 122, control valve, 13, inner shell, 14, outer shell, 15, first temperature control area; 2, stirring part, 22, roller body, 23, dispersion disc, 231, disc body, 232, protruding block, 2321, dispersion roller; 3, wall scraping part, 31, rotating piece, 32, first scraper. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. The described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application.

[0032] The following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents the preferred application of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0033] Embodiment 1:

[0034] Please refer to the accompanying drawings Figure 1 - the accompanying drawings Figure 3 The dry powder stirring device comprises a barrel portion 1, a stirring portion 2 and a wall scraping portion 3. The barrel portion 1 is recessed to form a stirring cavity 11, and the barrel portion 1 is provided with a temperature control assembly 12 for controlling the temperature of the barrel portion 1. The stirring portion 2 is arranged in the stirring cavity 11, and the wall scraping portion 3 is arranged on the inner wall of the stirring cavity 11 close to the barrel portion 1.

[0035] The wall scraping portion 3 is used to stir the powder in the stirring cavity 11 close to the barrel portion 1, and cooperates with the stirring portion 2 to ensure sufficient stirring.

[0036] In the dry powder stirring device, the stirring portion 2 and the wall scraping portion 3 can be fixedly connected with the barrel cover. The stirring process is as follows: first, add the required various powders in the stirring cavity 11 in sequence, cover the corresponding barrel cover after the addition is completed, and when the height of the stirring portion 2 on the barrel cover is lowered to half the height of the barrel portion 1, the stirring portion 2 can automatically rotate at a slow speed until the stirring portion 2 is lowered to a distance of 1-2 mm from the bottom surface of the barrel portion 1, and then the stirring portion 2 stops descending and continuously rotates. The distance between the wall scraping portion 3 and the inner wall of the barrel portion 1 is 1-2 mm. When the stirring portion 2 and the wall scraping portion 3 complete the descending process, the barrel cover is tightly combined with the barrel portion 1 at this time, and the powder spraying or material leakage during the stirring process is prevented.

[0037] Secondly, after the powder addition is completed, the stirring portion 2 first stirs the powder in the barrel portion 1 at a high linear speed, and at this time the linear speed of the stirring portion 2 is 15-55 m / s. At the same time, the barrel portion 1 also starts to rotate at a low speed, and the linear speed is 1-15 m / s. Through the combination of the high-speed rotating stirring portion 2, the low-speed rotating stirring barrel and the wall scraping portion 3 with a fixed distance from the barrel portion 1, the powder in the stirring cavity 11 can present irregular rapid flow, friction and tumbling until all the powder is uniformly stirred without agglomeration.

[0038] Meanwhile, in the stirring process, due to the high linear speed rotation of the stirring part 2, the powder colliding and rubbing with each other will generate heat. In order to prevent the heat from damaging the structure of the material and preventing the material from being fiberized in advance, the temperature control assembly 12 is needed to cool the barrel part 1 at this time, so that the rapidly stirred powder directly or indirectly contacts the cooled barrel part 1, thereby achieving the cooling of the mixed powder and maintaining the powder in the stirring process at room temperature 20-30℃, ensuring the stability of the powder structure in the whole stirring process.

[0039] Finally, the mixed powder stirred uniformly at room temperature needs to be subjected to the next fiberization process. The so-called fiberization is to heat the mixed powder, that is, the temperature control assembly 12 is used to heat the barrel part 1. When the temperature of the powder reaches a certain threshold, that is, 100-200℃, the mixed powder will have a physical reaction, and the granular powder will become a strip-shaped fiber.

[0040] Specifically, the function of the temperature control assembly 12 of switching from low temperature to high temperature is realized by replacing the cooling liquid with hot oil to heat the barrel part 1, so that the mixed powder directly or indirectly contacts the barrel part 1 in the stirring process, and the mixed powder is uniformly heated to accelerate the fiberization and uniformity.

[0041] The mixed powder stirred uniformly and fiberized has certain adhesion and winding property. The dry film sheet with the required thickness can be obtained by multi-stage rolling and step-by-step thinning of the mixed powder by the rolling machine.

[0042] In this structure, through the design of the stirring and temperature control functions, the stirring part 2 and the wall scraping part 3 are used to stir the powder. In the stirring process, the temperature control assembly 12 cools the powder to avoid the frictional heat phenomenon of the mixed powder colliding and rubbing with each other, which leads to fiberization in advance, thereby ensuring the stability of the material structure in the stirring process. In the fiberization process, the temperature control assembly 12 heats the powder to make the mixed powder have a physical reaction and then become a strip-shaped fiber, thereby realizing the stirring and fiberization of the powder. The overall process is simple and convenient, the energy consumption is small, the device has strong function integration, the structure is simple and compact, and the occupied area is small.

[0043] Moreover, the dry film sheet produced by this method can save the toxic solvent NMP in the traditional wet stirring, and can also cancel the coating and drying machine, reduce the equipment investment, and simplify the overall production process, thereby improving the production efficiency and effectively reducing the production cost. In addition, the phenomenon of serious heating of the battery product caused by the entry of impurities and foreign matters in the operation process can be avoided, the production quality of the battery is ensured, the short circuit, fire and explosion phenomena are effectively avoided, and the safety of the battery use is improved.

[0044] In some embodiments, the barrel 1 comprises an inner shell 13 and an outer shell 14, the inner shell 13 and the outer shell 14 are sealingly connected to form a first temperature control area 15, and the temperature control assembly 12 is arranged in the first temperature control area 15. Wherein, the first temperature control area 15 can make the temperature generated by the temperature control assembly 12 evenly spread to the inner shell 13, effectively improving the uniformity of the heat received by the powder.

[0045] Specifically, the temperature control assembly 12 comprises a temperature control pipe 121 and a control valve 122, the temperature control pipe 121 is arranged around the outer wall of the inner shell 13, and the control valve 122 is arranged in communication with the temperature control pipe 121 and penetrates the outer shell 14. Wherein, the temperature control pipe 121 is used to load cooling liquid or hot oil. The control valve 122 adopts a one-way control valve 122, which is convenient for the flow or replacement of cooling liquid or hot oil.

[0046] Through the above arrangement, the convenience of temperature control assembly 12 to switch between cold and hot temperatures can be effectively improved. When the temperature control assembly 12 switches to a high-temperature state, only hot oil needs to be input into the temperature control pipe 121, and the hot oil is input and output through the control valve 122 to ensure the persistence of high temperature. When the temperature control assembly 12 switches to a low-temperature state, only cooling liquid needs to be input into the temperature control pipe 121, and the cooling liquid is input and output through the control valve 122 to ensure the persistence of low temperature, thereby ensuring the stability of the material. The overall operation is convenient, and the temperature control efficiency is high.

[0047] Embodiment 2:

[0048] The difference between this embodiment and embodiment 1 is that the interior of the stirring part 2 is a hollow structure and forms a second temperature control area. Wherein, the second temperature control area uses cooling liquid or hot oil to realize temperature control. Through the arrangement of the second temperature control area, the stirring part 2 can also realize the effect of heating or cooling. When the powder is stirred, the second temperature control area injects cooling liquid, and through the stirring part 2, the powder is stirred in a low-temperature state, which cooperates with the temperature control assembly 12 to ensure that the powder cools quickly and ensures the smoothness of stirring. At the same time, when the powder is fiberized, the second temperature control area injects hot oil, and through the stirring part 2, the powder is fiberized in a high-temperature state, which cooperates with the temperature control assembly 12 to ensure that the powder heats up quickly and uniformly, accelerating the fiberization and uniformity.

[0049] In some embodiments, please refer to Figure 4 , the stirring part 2 comprises a roller body 22 and a dispersion disc 23, and the dispersion disc 23 is fixedly connected with the roller body 22. Wherein, the roller body 22 rotates to drive the dispersion disc 23 to rotate, so that the dispersion disc 23 stirs and mixes the powder.

[0050] Preferably, the dispersion disc 23 comprises a disc body 231 and a plurality of protrusions 232 arranged in an annular array on the edge of the disc body 231. By virtue of the protrusions 232, the contact area between the disc body 231 and the powder can be effectively increased, thereby improving the stirring and dispersion capacity and accelerating the efficiency of uniform stirring.

[0051] In some embodiments, the protrusions 232 are provided with dispersion rollers 2321. By virtue of the dispersion rollers 2321, the contact area between the protrusions 232 and the powder can be increased longitudinally, thereby further improving the stirring and dispersion capacity and correspondingly improving the efficiency of uniform stirring.

[0052] In some embodiments, referring to Figure 5 , the wall scraping part 3 comprises a rotating member 31 and a first scraper 32, the upper end of the first scraper 32 is connected to the rotating member 31, and the first scraper 32 is arranged in the stirring cavity 11 close to the inner wall of the inner shell 13. Preferably, the distance between the first scraper 32 and the inner wall of the inner shell 13 is 1-5 mm, which can prevent the scraper from scraping the inner wall of the inner shell 13 and avoid introducing foreign matter, while also ensuring the wall scraping effect and the sufficient stirring of the powder. The rotating member 31 can drive the first scraper 32 to rotate 360 degrees. By virtue of the wall scraping part 3, the first scraper 32 is driven by the rotating member 31 to continue stirring the powder around it, and cooperates with the stirring part 2, so that the stirring powder components exist in different positions in the stirring cavity 11, thereby improving the uniformity of the powder stirring and accelerating the stirring efficiency.

[0053] Embodiment 3:

[0054] The difference between this embodiment and embodiment 2 is that, referring to Figure 6 , the wall scraping part 3 of this embodiment further comprises a second scraper, the second scraper is connected to the end of the first scraper 32 away from the rotating member 31, and is arranged at an angle α with the first scraper 32. By virtue of the arrangement of the second scraper, the first scraper 32 and the second scraper are arranged at different positions of the powder, and the contact area with the powder is correspondingly increased, thereby improving the stirring and dispersion capacity and accelerating the stirring efficiency.

[0055] In some embodiments, referring to Figure 7The first scraper 32 is provided with an adjusting hole and a bolt, the bolt is passed through the adjusting hole and the second scraper is arranged to fixedly connect the second scraper with the first scraper 32. Preferably, the adjusting hole is a circular arc type adjusting hole. Due to the shape of the adjusting hole, the position of the adjusting bolt in the adjusting hole can be adjusted, the position of the second scraper is fine adjusted, and the angle between the first scraper 32 and the second scraper is adjusted, the flexibility is high, and the angle between the two scrapers can be set according to the actual stirring range required. It can be understood that the greater the angle between the first scraper 32 and the second scraper, the greater the stirring range thereof, and the stronger the powder stirring and dispersing capacity.

[0056] Preferably, the first scraper 32 is internally provided with a thermal sensing temperature instrument to ensure online monitoring of the temperature in the stirring process.

[0057] In the utility model, unless another definite provision and limitation, the terms "mount", "connect", "joint", "fix" and the like terms should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated; can be mechanical connection, also can be electrical connection; can be directly connected, also can pass through the indirect connection of intermediate medium, can be the communication of two elements or the interaction of two elements. For ordinary skilled in the art, the above-mentioned terms can be understood according to the specific meaning of the utility model.

[0058] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawing, or the orientation or position relationship of the product of the utility model when it is usually placed, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, a particular orientation and operation, so it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

[0059] In addition, the terms "horizontal", "vertical", "overhang" and the like terms do not mean that the component must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0060] In the utility model, unless another definite provision and limitation, first feature is above or below second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through additional feature between them.

[0061] Although the description of the utility model is combined with above specific embodiment, it is obvious that many substitutions, modifications and changes can be made according to the above-mentioned content by the person skilled in the art. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A dry powder mixing device, characterized by, The utility model provides a kind of stirring device, comprising Barrel portion, the barrel portion is retracted to form stirring cavity, and the barrel portion is provided with temperature control assembly, and the temperature control assembly controls the temperature of the barrel portion; Stirring portion, the stirring portion is arranged in the stirring cavity;And Wall scraping portion, the wall scraping portion is arranged in the stirring cavity near the inner wall side of the barrel portion.

2. The dry powder mixing device of claim 1, wherein, The barrel portion includes inner shell and outer shell, and the inner shell and the outer shell are sealingly connected to form a first temperature control area, and the temperature control assembly is arranged in the first temperature control area.

3. The dry powder mixing device of claim 2, wherein, The temperature control assembly includes a temperature control tube and a control valve, the temperature control tube is arranged around the outer wall of the inner shell, the control valve is arranged in communication with the temperature control tube, and the control valve penetrates the outer shell.

4. A dry powder mixing device according to any one of claims 1-3, characterized in that, The interior of the stirring portion is a hollow structure, and a second temperature control area is formed.

5. A dry powder mixing device according to any one of claims 1-3, characterized in that, The stirring portion includes a roller body and a dispersion disc, and the dispersion disc is fixedly connected to the roller body.

6. The dry powder mixing device of claim 5, wherein, The dispersion disc includes a disc body and a lug, and the lug is arranged in an annular array on the edge of the disc body.

7. The dry powder mixing device of claim 6, wherein, The lug is provided with a dispersion roller.

8. The dry powder mixing device of any one of claims 2-3, wherein, The wall scraping portion includes a rotating member and a first scraper, the upper end of the first scraper is connected to the rotating member, and the first scraper is arranged in the stirring cavity near the inner wall side of the inner shell.

9. The dry powder mixing device of claim 8, wherein, The wall scraping portion also includes a second scraper, the second scraper is connected to the end of the first scraper away from the rotating member, and is arranged in intersection with the first scraper, and forms an angle α.

10. The dry powder mixing device of claim 9, wherein, The first scraper is provided with an adjusting hole and a bolt, the bolt is arranged in the adjusting hole and the second scraper to fix the second scraper and the first scraper.

Images