CN116459700A - Mixing components and kneaders - Google Patents

Abstract

The application provides a stirring assembly and a kneader. The mixing assembly includes: a rotating shaft; a rotating disk, the rotating disk is connected to the rotating shaft and arranged coaxially with the rotating shaft, and the rotating disk is used to rotate under the drive of the rotating shaft; and a plurality of blades, the plurality of blades are connected to the outer peripheral side of the rotating disk, and are arranged at intervals along the circumference of the rotating disk, the blades include a first shearing member, and the first shearing member is used to provide a shearing force in the direction of rotation of the blade; and a plurality of second shearing members, the second shearing member is fixedly connected to the blade, and the second shearing member is used to provide Shear force in a direction parallel to the axis of rotation. The stirring component provided by the present application can improve the stirring effect and the stirring efficiency.

Description

Mixing components and kneaders

technical field

The application belongs to the technical field of kneading equipment, and in particular relates to a stirring assembly and a kneading machine.

Background technique

As the demand for secondary batteries increases, the demand for preparation of slurry for electrodes increases. However, in the kneading process, the viscosity of the semi-dry slurry is high and the stirring resistance is large, so that the stirring speed of the stirring assembly is slow due to excessive resistance during the stirring process, and it is easy to cause damage to the drive motor, so the stirring efficiency is low.

Contents of the invention

In a first aspect, the application provides a stirring assembly, the stirring assembly includes:

shaft;

a turntable, the turntable is connected to the shaft and coaxially arranged with the shaft, and the turntable is used to rotate driven by the shaft; and

a plurality of paddles, the plurality of paddles are connected to the outer peripheral side of the turntable and arranged at intervals along the circumference of the turntable, the paddles include a first shearing member, and the first shearing member is used to provide a shearing force in the direction of rotation of the paddle; and

A plurality of second shearing elements, the second shearing elements are fixedly connected to the paddles, and the second shearing elements are used to provide a shearing force in a direction parallel to the rotation axis.

Wherein, the rotating shaft includes a first end and a second end oppositely arranged, and the turntable is arranged close to the second end;

The paddle includes a first surface and a second surface disposed opposite to each other, and a first side surface and a second side surface connected between the first surface and the second surface, the first surface is closer to the first end than the second surface;

The first shear member includes a first inclined surface on the first surface adjacent to the first side;

And/or, the first shearing member includes a second inclined surface with the second surface close to the first side.

Wherein, the first shearing member further includes a third inclined surface on the first surface close to the second side;

And/or, the first shearing member further includes a fourth inclined surface where the second surface is close to the second side surface.

Wherein, the minimum thickness between the first shearing member and the second surface decreases gradually along a direction away from the turntable.

Wherein, the rotating shaft includes a first end and a second end oppositely disposed, and the turntable is close to the second end;

The second shearing member is arranged along a direction parallel to the rotation axis, the first part of the second shearing member is arranged on the side of the blade facing the first end, the second part of the second shearing member is arranged on the side of the blade facing the second end, and the length of the first part along the direction parallel to the rotation axis is greater than the length of the second part along the direction parallel to the rotation axis.

Wherein, the second shearing member includes pins, the pins are located on the side of the paddle away from the turntable, the number of the pins on each paddle is one or more, and the pins on adjacent paddles are at least partially staggered in the circumferential direction of the turntable.

Wherein, the second shearing piece is welded integrally with the paddle.

Among them, the first part includes:

a main body fixedly connected to the paddle; and

An extension part, the extension part is interconnected with the main body part as a whole, and is located at the end of the main body part away from the paddle, and the outer diameter of the extension part decreases continuously along the direction away from the paddle.

Wherein, the rotating shaft includes a first end and a second end oppositely arranged, and the turntable is arranged close to the second end;

The paddle includes a first surface and a second surface opposite to each other, and a first side and a second side connected between the first surface and the second surface, the first surface is closer to the first end than the second surface; the first surface is a fifth inclined surface, and the fifth inclined surface is used to provide a thrust toward the first end when the turntable rotates.

Wherein, the fifth inclined surface and the rotation direction of the turntable are set at a preset angle, and the preset angle α satisfies: 0°<α≦30°.

The stirring component provided by the present application shears the material to be stirred through the first shearing member and the second shearing member when stirring the material to be stirred, so as to reduce the resistance of the material to be stirred to the stirring component, thereby improving the stirring effect and stirring efficiency of the stirring component on the material to be stirred. In addition, since the resistance encountered by the stirring assembly is reduced, the risk of damage to the driving motor that drives the stirring assembly to rotate is also reduced. Therefore, the stirring assembly provided by the present application can improve the stirring effect and the stirring efficiency.

In a second aspect, the application also provides a kneader, the kneader comprising:

A kneading cylinder, the kneading cylinder has a storage space, and the storage space is used to accommodate the material to be stirred; and

According to the stirring assembly described in the first aspect, the rotating shaft is arranged along the central axis of the kneading drum, and the stirring assembly is used to rotate around the central axis of the kneading drum to at least provide the material to be stirred with a shearing force in the direction of rotation of the paddle, a shearing force in a direction parallel to the rotating shaft, and a stirring centrifugal force.

In the kneader provided by the present application, when the material to be stirred is stirred, the rotating shaft is arranged along the central axis of the kneading barrel, so that the stirring assembly can rotate around the central axis of the kneading barrel, and the material to be stirred is sheared by the first shearing member and the second shearing member, so as to reduce the resistance of the material to be stirred to the stirring assembly, thereby improving the stirring effect and efficiency of the stirring assembly on the material to be stirred, and then improving the stirring effect and efficiency of the kneader on the material to be stirred. In addition, by rotating around the central axis of the kneading cylinder, the stirring assembly can provide the material to be stirred with a centrifugal force away from the central axis of the kneading cylinder, so as to further improve the stirring effect on the material to be stirred. Therefore, the present application provides a kneader capable of improving the stirring effect and stirring efficiency through the stirring components.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings used in the implementation. Obviously, the accompanying drawings in the following description are some implementations of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a stirring assembly provided by an embodiment of the present application.

Fig. 2 is a schematic view of the stirring assembly in Fig. 1 from another perspective.

Fig. 3 is a schematic structural view of the first shearing member in Fig. 1 in an embodiment.

Fig. 4 is a schematic structural view of another embodiment of the first shearing member in Fig. 1 .

Fig. 5 is a schematic structural view of the first shearing member in Fig. 1 in another embodiment.

Fig. 6 is a schematic structural diagram of a stirring assembly provided in another embodiment of the present application.

FIG. 7 is a schematic view of the stirring assembly in FIG. 6 from another perspective.

FIG. 8 is a schematic structural diagram of the second shearing member in FIG. 2 .

Fig. 9 is a schematic structural diagram of a stirring assembly provided in another embodiment of the present application.

FIG. 10 is a schematic diagram of the stirring assembly in FIG. 9 from another perspective.

Fig. 11 is a schematic structural diagram of a kneader provided by an embodiment of the present application.

Fig. 12 is a schematic cross-sectional structure diagram along line A-A of Fig. 11 .

Fig. 13 is a schematic cross-sectional structure diagram along line B-B of Fig. 11 .

Description of drawings: kneader 1; mixing assembly 10; rotating shaft 11; first end 111; second end 112; turntable 12; paddle 13; 1; the main body part 1411; the extension part 1412; the second part 142; the pin 143; the kneading cylinder 20;

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

Reference herein to "an embodiment" or "implementation" means that a particular feature, structure or characteristic described in connection with the embodiment or implementation may be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

The present application provides a stirring assembly 10 . Please refer to FIG. 1 , which is a schematic structural diagram of a stirring assembly provided in an embodiment of the present application. In this embodiment, the stirring assembly 10 includes a rotating shaft 11 , a turntable 12 , a plurality of paddles 13 and a plurality of second shearing elements 14 . The turntable 12 is connected to the rotating shaft 11 and coaxial with the rotating shaft 11 . The turntable 12 is used to rotate driven by the rotating shaft 11 . The plurality of paddles 13 are connected to the outer peripheral side of the turntable 12 and arranged at intervals along the circumferential direction of the turntable 12 . The paddle 13 includes a first shearing member 131 . The first shearing member 131 is used to provide a shearing force in the direction of rotation of the paddle 13 . The second shearing member 14 is fixedly connected to the paddle 13 . The second shearing member 14 is used to provide a shearing force in a direction parallel to the rotation axis 11 .

In this embodiment, the stirring component 10 is used to stir the material to be stirred. The material to be stirred may be, but not limited to, solid powder, or liquid, or a solid-liquid mixture. In this embodiment, the material to be stirred is illustrated as electrode slurry. It can be understood that the material to be stirred can also be other slurry that needs to be stirred, such as fertilizer, construction material, etc., and the type of material to be stirred stirred by the stirring assembly 10 is not limited here.

In this embodiment, the first shearing member 131 is used to provide a shearing force in the direction of rotation of the paddle 13 . Specifically, the first shearing member 131 is arranged on the side of the paddle 13 facing the direction of rotation. When the paddle 13 is driven by the turntable 12 to rotate around the shaft 11, the first shearing member 131 can cut the material to be stirred stirred by the stirring assembly 10, thereby providing a shearing force in the direction of rotation of the paddle 13 to reduce the resistance of the material to be agitated to the paddle 13, improve the stirring speed of the stirring assembly 10, and then improve the stirring speed of the stirring assembly 10. The mixing effect and mixing efficiency of the material to be mixed. Wherein, the first shearing member 131 is also called a knife edge.

Optionally, the paddle 13 includes the first shearing member 131 and a paddle body, and the first shearing member 131 is integrated with the paddle body to improve the overall strength and stirring stability of the paddle 13 . Alternatively, the first shearing member 131 is detachably connected to the paddle body, so that the specifications of the first shearing member 131 can be replaced, so that the first shearing member 131 of different thicknesses, different sharpness and other specifications can be selected according to actual work requirements.

In this embodiment, the second shearing member 14 is used to provide a shearing force in a direction parallel to the rotation axis 11 . Specifically, the second shearing member 14 is fixedly connected to the paddle 13, and the second shearing member 14 is protrudingly arranged on the surface of the paddle 13. When the paddle 13 rotates around the rotating shaft 11 driven by the turntable 12, the second shearing member 14 rotates around the rotating shaft 11 together with the paddle 13, so as to cut the material to be stirred by the stirring assembly 10. The second shear member 14 at least provides a shear force along a direction parallel to the rotating shaft 11, thereby reducing the resistance of the material to be stirred to the paddle 13, increasing the stirring speed of the stirring assembly 10, and further improving the stirring effect and stirring efficiency of the stirring assembly 10 on the material to be stirred.

Optionally, the second shearing member 14 is arranged parallel to the rotating shaft 11, and the second shearing member 14 is protruded from the paddle 13, so that the second shearing member 14 is perpendicular to the rotation direction of the paddle 13 around the rotating shaft 11, so as to reduce the resistance of the material to be stirred that the second shearing member 14 receives during the rotation around the rotating shaft 11. Alternatively, the extending direction of the second shearing member 14 is set at an acute angle to the rotating shaft 11 , as long as the shearing force of the second shearing member 14 on the material to be stirred has a component in a direction parallel to the rotating shaft 11 .

In summary, when the stirring component 10 provided in the present application is stirring the material to be stirred, the first shearing member 131 and the second shearing member 14 are used to shear the material to be stirred, so as to reduce the resistance of the material to be stirred to the stirring component 10, thereby improving the stirring effect and stirring efficiency of the stirring component 10 on the material to be stirred. In addition, since the resistance encountered by the stirring assembly 10 during stirring is reduced, the risk of damage to the driving motor that drives the stirring assembly 10 to rotate is also reduced. Therefore, the stirring assembly 10 provided by the present application can improve the stirring effect and the stirring efficiency.

Please refer to Figures 1-5, Figure 2 is a schematic diagram of the stirring assembly in Figure 1 from another perspective; Figure 3 is a schematic structural view of the first shearing member in Figure 1 in an embodiment; Figure 4 is a schematic structural view of the first shearing member in Figure 1 in another embodiment; Figure 5 is a schematic structural view of the first shearing member in Figure 1 in another embodiment. In this embodiment, the rotating shaft 11 includes a first end 111 and a second end 112 oppositely disposed. The turntable 12 is disposed close to the second end 112 . The paddle 13 includes a first surface 132 and a second surface 133 opposite to each other, and a first side 134 and a second side 135 connected between the first surface 132 and the second surface 133 . The first surface 132 is closer to the first end 111 than the second surface 133 . The first shearing member 131 includes a first inclined surface 1311 on the first surface 132 close to the first side 134 , and/or, the first shearing member 131 includes a second inclined surface 1312 on the second surface 133 close to the first side 134 .

In this embodiment, the arrangement of the first shearing member 131 has various forms, all of which can increase the shearing force of the material to be stirred when the paddle 13 rotates around the rotating shaft 11 . Specifically, in one embodiment (please refer to FIG. 3 ), the first shearing member 131 includes a first inclined surface 1311 on the first surface 132 close to the first side 134, so that when the first shearing member 131 shears the material to be stirred, it can also provide a thrust to the material to be stirred toward the first end 111, thereby providing the ability to break up the material to be stirred, thereby improving the kneading effect on the material to be stirred. In another embodiment (please refer to FIG. 4 ), the first shearing member 131 includes a second inclined surface 1312 close to the one side of the second surface 133, so that when the first shearing member 131 shears the material to be stirred, it can also provide a thrust to the material to be stirred toward the second end 112, thereby providing the ability to break up the material to be stirred, thereby improving the kneading effect on the material to be stirred. In yet another embodiment (please refer to FIG. 5 ), the first shearing member 131 includes a first inclined surface 1311 on the first surface 132 close to the first side 134, and includes a second inclined surface 1312 on the second surface 133 close to the first side 134, so that when the first shearing member 131 shears the material to be mixed, it can also provide a thrust to the material to be mixed toward the first end 111 and the second end 112, thereby providing a beating force on the material to be mixed. Dispersion ability, and then improve the kneading effect on the material to be stirred. Therefore, in addition to the shear force provided by the first shearing member 131 to the material to be stirred, the first shearing member 131 can be set according to the direction of additional thrust required on the material to be stirred, so as to further improve the kneading effect on the material to be stirred.

Please refer to FIGS. 2-5 again. In this embodiment, the first shearing member 131 further includes a third inclined surface 1313 on the first surface 132 close to the second side 135, and/or, the first shearing member 131 further includes a fourth inclined surface 1314 on the second surface 133 close to the second side 135.

In this embodiment, the first shearing member 131 includes inclined surfaces on opposite sides of the paddle 13, so that when the rotating shaft 11 rotates clockwise and counterclockwise, the first shearing member 131 can provide a shear force in the direction of rotation of the paddle 13, thereby improving the stirring effect and stirring efficiency of the stirring assembly 10 in clockwise stirring and counterclockwise stirring.

Optionally, the first shearing member 131 is arranged symmetrically on the part close to the first side 134 and the part close to the second side 135, so that when the stirring assembly 10 is stirring clockwise and counterclockwise, the shearing effect provided by the first shearing member 131 is consistent, and the stirring stability of the stirring assembly 10 is provided. Alternatively, the first shearing member 131 is asymmetrically arranged near the first side 134 and the second side 135, so that when the stirring assembly 10 is stirring clockwise and counterclockwise, the first shearing member 131 can provide different stirring effects, so that the stirring direction of the stirring assembly 10 can be set according to the stirring requirements.

Please refer to FIG. 1 and FIG. 2 again. In this embodiment, the minimum thickness between the first shearing member 131 and the second surface 133 decreases gradually along the direction away from the turntable 12 .

In this embodiment, the minimum thickness between the first shearing member 131 and the second surface 133 gradually decreases along the direction away from the turntable 12, that is, the greater the shearing force that the first shearing member 131 can provide in the direction away from the turntable 12 in the direction of rotation of the paddle 13, thereby overcoming the problem that the stirring resistance gradually increases due to the gradual increase of the force arm of the paddle 13 along the direction away from the turntable 12, reducing the portion of the paddle 13 away from the turntable 12 The received stirring resistance further improves the stirring effect of the stirring assembly 10 .

Please refer to FIG. 1 and FIG. 2 again. In this embodiment, the rotating shaft 11 includes a first end 111 and a second end 112 oppositely disposed. The turntable 12 is adjacent to the second end 112 . The second shearing member 14 is arranged along a direction parallel to the rotation axis 11 . The first portion 141 of the second shearing member 14 is disposed on a side of the paddle 13 facing the first end 111 . The second portion 142 of the second shearing member 14 is disposed on a side of the paddle 13 facing the second end 112 . The length of the first portion 141 along the direction parallel to the rotation axis 11 is greater than the length of the second portion 142 along the direction parallel to the rotation axis 11 .

In this embodiment, the second shearing member 14 is arranged in a direction parallel to the rotating shaft 11, so that the second shearing member 14 is perpendicular to the rotation direction of the paddle 13 around the rotating shaft 11, so as to reduce the resistance of the material to be stirred that the second shearing member 14 receives during the rotation around the rotating shaft 11.

In addition, the length of the first portion 141 along the direction parallel to the rotation axis 11 is greater than the length of the second portion 142 along the direction parallel to the rotation axis 11, which can improve the shearing effect of the second shearing member 14 on the side facing the first end 111. Wherein, the second shearing member 14 is arranged through the paddle 13 , and the second part 142 forms a support for the first part 141 to enhance the stability of the first part 141 when shearing the material to be stirred.

Please refer to FIG. 6 and FIG. 7 . FIG. 6 is a schematic structural diagram of a stirring assembly provided in another embodiment of the present application; FIG. 7 is a schematic diagram of the stirring assembly in FIG. 6 from another perspective. In this embodiment, the second shearing member 14 includes a pin 143 . The pin 143 is located on a side of the paddle 13 away from the turntable 12 . The number of pins 143 provided on each blade 13 is one or more. The pins 143 on the adjacent paddles 13 are at least partially staggered in the circumferential direction of the turntable 12 .

In this embodiment, the pin 143 is arranged on the side of the paddle 13 away from the turntable 12 to provide additional shearing force in the area of the paddle 13 away from the turntable 12, thereby overcoming the problem that the paddle 13 suffers from relatively large stirring resistance at the part far away from the turntable 12 due to the longer force arm, thereby providing a stirring effect.

In this embodiment, the pins 143 on the adjacent paddles 13 are at least partially staggered in the circumferential direction of the turntable 12, so as to increase the shearing range of the same number of pins 143, thereby increasing the kneading range of the stirring assembly 10, and further improving the kneading efficiency of the stirring assembly 10. Wherein, the pins 143 on the adjacent paddles 13 are at least partially staggered in the circumferential direction of the turntable 12, which means that on the adjacent paddles 13, the distance between at least one of the pins 143 on one of the paddles 13 and the rotating shaft 11 is different from the distance between the pins 143 on the other paddle 13 and the rotating shaft 11.

Please refer to FIG. 1 again. In this embodiment, the second shearing member 14 is welded together with the blade 13 to improve the stability of the connection between the second shearing member 14 and the blade 13, thereby improving the stability of the second shearing member 14 when the blade 13 rotates around the shaft 11.

Optionally, the second shearing member 14 and the paddle 13 have a detachable connection structure (such as bolt connection, plug connection, clamping, etc.), on the one hand, the second shearing member 14 and the paddle 13 can be pre-positioned before the second shearing member 14 and the paddle 13 are welded together, which is beneficial to welding quality. On the other hand, so that the second shearing member 14 can be tested on the setting position and quantity of the second shearing member 14 on the paddle 13 in the testing machine, and the stirring effect between each test is compared, so as to obtain the setting position and quantity of the second shearing member 14 on the paddle 13 that meet the actual application. It can be understood that, for different actual requirements, the arrangement position and quantity of the second shearing member 14 on the paddle 13 are different.

Please refer to FIG. 8 , which is a schematic structural diagram of the second shearing member in FIG. 2 . In this embodiment, the first portion 141 includes a main body 1411 and an extension 1412 . The main body 1411 is fixedly connected to the paddle 13 . The extension part 1412 is interconnected with the main body part 1411 as a whole, and the extension part 1412 is located at an end of the main body part 1411 away from the paddle 13 . The outer diameter of the extension portion 1412 decreases continuously along the direction away from the paddle 13 .

In this embodiment, the outer diameter of the extension part 1412 is continuously reduced along the direction away from the paddle 13, so that the shearing force that the extension part 1412 can provide along the direction away from the paddle 13 is continuously increased, thereby overcoming the problem that the extension part 1412 receives a continuous increase in stirring resistance due to the continuous increase of the force arm in the direction away from the paddle 13, thereby reducing the torsional deformation force received by the second shearing member 14, which is conducive to improving the stability of the second shearing member 14. , and improve the stirring effect of the stirring assembly 10.

Optionally, the outer diameter of the main body portion 1411 is larger than the outer diameter of the extension portion 1412 , so that the main body portion 1411 can provide stable support, which is beneficial to improve the stability of the second shearing member 14 .

Please refer to FIG. 9 and FIG. 10 , FIG. 9 is a schematic structural diagram of a stirring assembly provided in another embodiment of the present application; FIG. 10 is a schematic diagram of the stirring assembly in FIG. 9 from another perspective. In this embodiment, the rotating shaft 11 includes a first end 111 and a second end 112 oppositely disposed. The turntable 12 is disposed close to the second end 112 . The paddle 13 includes a first surface 132 and a second surface 133 opposite to each other, and a first side 134 and a second side 135 connected between the first surface 132 and the second surface 133 . The first surface 132 is closer to the first end 111 than the second surface 133 . The first surface 132 is a fifth inclined surface 1321 . The fifth inclined surface 1321 is used to provide a thrust towards the first end 111 when the turntable 12 rotates.

In this embodiment, the first surface 132 is the fifth inclined surface 1321, so that the paddle 13 can push the material to be stirred toward the first end 111 through the fifth inclined surface 1321 when rotating around the rotating shaft 11, so as to further break up the material to be stirred and improve the stirring effect on the material to be stirred.

Specifically, a schematic illustration is made by taking the first end 111 pointing to the second end 112 as the direction of gravity. The stirring assembly 10 has the best stirring effect on the material to be stirred in the vicinity of the paddle 13. The fifth inclined surface 1321 on the paddle 13 pushes the material to be stirred upward toward the first end 111 during the stirring process, so that the material to be stirred that is originally located near the paddle 13 will be pushed up to the top of the paddle 13, and the material to be stirred that was originally located above the paddle 13 will fall to the vicinity of the paddle 13 under the action of gravity. Repeating this way, the material to be stirred will be turned up and down in the direction of gravity under the action of the fifth inclined surface 1321 and the gravity during the rotation process of the stirring component 10, so that the stirring component 10 can fully knead the material to be stirred, thereby improving the stirring quality of the stirring component 10.

Optionally, the paddle 13 as a whole is inclined compared with the rotation direction of the paddle 13 around the rotating shaft 11 , so that the first surface 132 is the fifth inclined surface 1321 . Alternatively, the second surface 133 of the paddle 13 is a plane perpendicular to the rotating shaft 11 , and the first surface 132 is designed as an inclined surface to form the fifth inclined surface 1321 .

Please refer to FIG. 10 again, in this embodiment, the fifth inclined surface 1321 and the rotation direction of the turntable 12 are set at a preset angle. The preset angle α satisfies: 0°<α≦30°.

In this embodiment, the preset angle α satisfies: 0°<α≦30° so that the paddle 13 can provide a better thrust effect on the material to be stirred, and the rotation resistance of the paddle 13 is relatively small. For example, the preset angle α may be, but not limited to, 1°, or 3°, or 5°, or 7°, or 9°, or 11°, or 13°, or 15°, or 18°, or 21°, or 23°, or 25°, or 27°, or 30°, or any other value between 0° and 30°. Further, the preset angle α satisfies: 5°≤α≤15°, which can further improve the thrust effect provided by the paddle 13 on the material to be stirred, and the rotation resistance of the paddle 13 is relatively small. If the preset angle is greater than 30°, on the one hand, the component of the thrust of the fifth inclined surface 1321 on the material to be stirred is too small in the direction that the second end 112 points to the first end 111, thereby reducing the effect of the paddle 13 on the material to be stirred toward the first end 111; too big. Therefore, the preset angle α satisfies: 0°<α≦30° so that the paddle 13 can provide a better thrust effect on the material to be stirred, and the rotation resistance of the paddle 13 is relatively small.

The present application also provides a kneader 1 . Please refer to Fig. 1, Fig. 11, Fig. 12 and Fig. 13, Fig. 11 is a schematic structural view of a kneader provided by an embodiment of the present application; Fig. 12 is a schematic sectional structural view of Fig. 11 along line A-A; Fig. 13 is a schematic sectional structural view of Fig. 11 along line B-B. In this embodiment, the kneader 1 includes a kneading cylinder 20 and the stirring assembly 10 as described in any one of the above embodiments. The kneading cylinder 20 has a storage space 21 . The containing space 21 is used for containing the material to be stirred. The rotating shaft 11 is arranged along the central axis of the kneading cylinder 20 . The stirring assembly 10 is used to rotate around the central axis of the kneading cylinder 20, at least providing the material to be stirred with a shearing force in the direction of rotation of the paddle 13, a shearing force in a direction parallel to the rotating shaft 11, and a stirring centrifugal force.

In this embodiment, the kneader 1 is used to stir the material to be stirred. The material to be stirred may be, but not limited to, solid powder, or liquid, or a solid-liquid mixture. In this embodiment, the material to be stirred is illustrated as electrode slurry. It can be understood that the material to be stirred can also be other slurry that needs to be stirred, such as fertilizers, construction materials, etc., and the application of the kneader 1 is not limited here.

In this embodiment, the rotating shaft 11 is arranged along the central axis of the kneading cylinder 20, so that the stirring assembly 10 can rotate around the central axis of the kneading cylinder 20, and the material to be stirred is sheared by the first shearing member 131 and the second shearing member 14, so as to reduce the resistance of the material to be agitated to the mixing assembly 10, thereby improving the stirring effect and efficiency of the stirring assembly 10 on the material to be agitated, and further improving the mixing effect and efficiency of the kneader 1 on the material to be agitated. In addition, by rotating around the central axis of the kneading cylinder 20, the stirring assembly 10 can provide the material to be stirred with a centrifugal force away from the central axis of the kneading cylinder 20, so as to further improve the mixing effect on the material to be stirred. Therefore, the present application provides a kneader 1 capable of improving the stirring effect and stirring efficiency through the stirring assembly 10 . Wherein, the central axis of the kneading cylinder 20 is the line connecting the center of the top wall of the kneading cylinder 20 and the center of the bottom wall of the kneading cylinder 20, and the arrangement of the rotating shaft 11 along the central axis of the kneading cylinder 20 means that the rotating shaft 11 is arranged at the exact center of the kneading cylinder 20.

Further, the kneading cylinder 20 includes a bottom wall, a top wall, and a peripheral side wall connected between the bottom wall and the top wall, the bottom wall is opposite to the top wall, and the peripheral side wall is surrounded by the bottom wall and the top wall to form a storage space 21, and the storage space 21 is used to accommodate materials to be stirred. The kneader 1 further includes a circumferential stirring device, which is accommodated in the housing space 21 , and the circumferential stirring device includes at least two stirring members, and the at least two stirring members are arranged at intervals along the circumferential side wall. The circumferential stirring device and the stirring assembly 10 rotate in cooperation, the circumferential stirring device and the stirring assembly 10 both rotate around the central axis of the kneading cylinder 20, the stirring assembly 10 centrifugally stirs the material to be stirred, and the circumferential stirring device stirs the material to be stirred centripetally, which is conducive to the formation of turbulent flow between the stirring assembly 10 and the circumferential stirring device, thereby facilitating the stirring of the material to be stirred, improving the mixing efficiency of the kneader 1, and making the material to be stirred more fully kneaded.

Further, the agitator includes a connecting part, a side paddle and a bottom paddle connected in sequence, the connecting part is arranged adjacent to the top wall, the side paddle is arranged close to the peripheral side wall, and the bottom paddle is arranged close to the bottom wall. One end of each of the bottom paddles facing away from the side paddles is interconnected as a whole. At least two of the bottom paddles are interconnected as a whole to provide a supporting force for the circumferential stirring device during rotation, so that the distance between adjacent stirring parts is kept fixed, and then the at least two stirring parts maintain their shapes during the stirring process, so that the overall structure of the circumferential stirring device is more stable, which is conducive to stirring the material to be stirred. In addition, by connecting at least two of the bottom paddles as one, the stirring effect on the material to be stirred near the bottom wall can be improved, thereby improving the kneading effect.

Further, the circumferential stirring device further includes a connecting piece, which is arranged adjacent to the bottom wall and the central axis of the kneading drum 20 , and the connecting piece connects one end of each of the bottom paddles away from the side paddles. By arranging the connecting piece close to the middle area on the bottom paddle, not only can the connection performance between the bottom paddles be improved, so that the overall structure of the circumferential stirring device is more stable; moreover, the connecting piece can provide stirring centrifugal force to the material to be stirred around the connecting piece, reduce the phenomenon of stockpiling between the turntable 12 and the bottom, and make it easier to discharge the material to be stirred.

Optionally, the connecting piece includes an annular structure with a material guide hole, and the bottom wall has a material outlet, and the material outlet is set corresponding to the material guide hole, so that the material to be stirred can enter the material outlet through the material guide hole, thereby reducing the accumulation phenomenon in the middle area. Moreover, the annular structure can not only improve the connection performance between the bottom paddles, thereby making the overall structure of the circumferential stirring device more stable, but also can provide stirring centrifugal force to the material to be stirred around the annular structure, further reducing the accumulation phenomenon in the middle area. Alternatively, the bottom wall has a discharge port, the discharge port is set away from the center of the bottom wall, and the orthographic projection of the connecting member on the bottom wall is located outside the discharge port, so that the connecting member can provide stirring centrifugal force to the material to be stirred around the connecting member, reduce the phenomenon of material stacking in the middle area, and make the material to be stirred in the middle area flow to the peripheral area, so that the eccentrically arranged discharge port can effectively cooperate with the connecting member, and improve the discharge effect of the kneading cylinder.

Optionally, the kneader 1 also includes a discharge pipe, the discharge pipe is connected to the discharge port, and the discharge pipe is provided with a suction pump or a motor, so that the material to be stirred flows from the kneading cylinder 20 to the discharge pipe.

Further, the bottom paddle includes a first sub-bottom paddle and a second sub-bottom paddle intersectingly arranged, one end of the first sub-bottom paddle is connected to the side paddle, and the end of the second sub-bottom paddle away from the first sub-bottom paddle extends toward the central axis of the kneading cylinder 20. The extension direction of the second sub-bottom paddles of the two opposite bottom paddles is the same and interconnected as a whole. By forming the first sub-bottom paddle and the second sub-bottom paddle into an S-shaped bottom paddle, when the material to be stirred is in contact with the rotating bottom paddle, the resistance of the material to be stirred to the bottom paddle can be better dispersed, and the stability of the circumferential stirring device is improved. Further, the bottom wall has a discharge port, and the first sub-bottom paddle and the second sub-bottom paddle are bent to form a knuckle part, and the knuckle part pushes the material to be stirred to the discharge port during the rotation process, so as to improve the discharge effect of the kneading cylinder 20.

Further, the circumferential stirring device further includes at least one supporting frame, and every two adjacent stirring parts are connected through the supporting frame, and the supporting frame is used to provide supporting force for at least two stirring parts during rotation, so as to keep the distance between adjacent stirring parts constant, so that at least two stirring parts maintain their shapes during the stirring process, making the overall structure of the circumferential stirring device more stable.

Further, the support frame is arranged adjacent to the top wall, the support frame includes at least one support rod, and the support rod is connected between two adjacent side paddles. On the one hand, the support frame is close to the top wall, which can avoid contact with the material to be stirred to reduce resistance. On the other hand, the supporting rods are connected end to end to form a "ring" shape, which improves the stability of the overall structure of the circumferential stirring device.

Further, the first stirring assembly 10 also includes a plurality of scraping members, the scraping members are arranged at one end of the stirring member close to the inner wall of the kneading cylinder 20, and are used to scrape off the material to be agitated adhering to the inner wall of the kneading cylinder 20, thereby providing a kneading effect on the material to be agitated.

Optionally, the scraper is provided on at least one of an end of the side paddle close to the peripheral side wall and an end of the bottom paddle close to the bottom wall.

Further, when the scraping members are arranged on different side paddles, the scraping members arranged on different side paddles are staggered along the axial direction of the kneading cylinder 20, while ensuring that the scraping surfaces of the scraping parts cover the peripheral side walls, the rotational resistance of the circumferential stirring device is reduced, the overall structure of the circumferential stirring device is more stable, and the probability of deformation of the circumferential stirring device is reduced. When the scraping members are arranged on different bottom paddles, the scraping members arranged on different bottom paddles are staggered along the radial direction of the kneading cylinder 20. While ensuring that the scraping surface of the scraping part covers the bottom wall, the rotation resistance of the circumferential stirring device is reduced, the overall structure of the circumferential stirring device is more stable, and the probability of deformation of the circumferential stirring device is reduced.

Further, the kneader 1 further includes a control system, and the control system is used to control the rotation of the stirring assembly 10 and the circumferential stirring device around the central axis of the kneading drum 20 . When the rotational resistance of the stirring assembly 10 is greater than or equal to the first preset resistance, and/or the rotational resistance of the circumferential stirring device is greater than or equal to the second preset resistance, the control system controls the stirring assembly 10 and the circumferential stirring device to rotate in the same direction. When the rotational resistance experienced by the agitating assembly 10 is less than the first preset resistance and the rotational resistance experienced by the circumferential agitating device is less than the second predetermined resistance, the control system controls the agitating assembly 10 and the circumferential agitating device to rotate in opposite directions.

Optionally, by detecting the load current or torque corresponding to the first motor driving the stirring assembly 10 to rotate and the second motor driving the circumferential stirring device to judge the rotational resistance of the stirring assembly 10 and the circumferential stirring device. The stirring assembly 10 and the circumferential stirring device are controlled to rotate forward or backward according to the magnitude of the resistance. When the rotation resistance is large, controlling the stirring assembly 10 and the circumferential stirring device to rotate in the same direction can reduce the stirring resistance, reduce the torque of the motor, prevent the motor from overloading, and improve the overall stability of the kneader 1 . When the rotation resistance is small, controlling the stirring assembly 10 and the circumferential stirring device to rotate in reverse can increase the speed difference between the stirring assembly 10 and the circumferential stirring device, making the turbulent flow more obvious, improving the stirring effect of the material to be stirred, and then improving the kneading effect of the material to be stirred. In one embodiment, firstly, various powders are added into the kneading cylinder 20, and the various powders are stirred by using the stirring assembly 10 and the circumferential stirring device, so that the various powders are mixed evenly. Then, add a kneading solvent into the kneading cylinder 20, use the stirring assembly 10 and the circumferential stirring device to stir various powders and the kneading solvent, so as to knead the various powders and the kneading solvent together to obtain a kneaded product. Subsequently, add a dilution solvent into the kneading cylinder 20, and use the stirring assembly 10 and the circumferential stirring device to stir various powders, kneading solvents, and dilution solvents to dilute the kneaded product and obtain a slurry to be treated. Subsequently, the slurry to be treated is coated and dried to obtain a product of a specific shape. The preparation process of kneading a variety of powders with a kneading solvent and then adding a diluting solvent to dilute can improve the kneading effect of the powder and the solvent, increase the solid content of the slurry to be treated, save the solvent in the preparation process, and shorten the drying time of the subsequent drying step. In the above preparation process, the kneading difficulty is relatively high due to the extremely high viscosity of various powders mixed with the kneading solvent. Therefore, using the kneader 1 provided by the present application, the bottom paddle of the stirring assembly 10 is connected as a whole, which not only improves the stability of the stirring assembly 10, reduces the probability of deformation of the stirring assembly 10; and improves the stirring effect of the stirring member on the material to be stirred, thereby improving the kneading effect of the kneading machine 1. Moreover, the stirring assembly 10 can cooperate with the circumferential stirring device, which improves the stirring effect of the material to be stirred, and further improves the kneading effect of the material to be stirred.

For example, when the material to be stirred includes various powders, the control system controls the stirring assembly 10 to rotate counterclockwise with the circumferential stirring device. Optionally, various powders are materials for preparing positive and negative electrodes of batteries.

For another example, when the material to be stirred includes various powders and kneading solvents, and the viscosity of the material to be stirred is greater than a preset viscosity, the control system controls the stirring component 10 to rotate in the same direction as the circumferential stirring device.

For another example, when the material to be stirred includes various powders and kneading solvents, and the viscosity of the material to be stirred is less than a preset viscosity, the control system controls the stirring assembly 10 to rotate counterclockwise with the circumferential stirring device.

For another example, when the material to be stirred includes various powders, kneading solvents, and dilution solvents, and the viscosity of the material to be stirred is less than a preset viscosity, the control system controls the stirring assembly 10 to rotate counterclockwise with the circumferential stirring device. Alternatively, the composition of the diluting solvent is the same as that of the kneading solvent.

When the material to be stirred includes various powders and kneading solvents, and the viscosity of the material to be stirred is less than the preset viscosity, the control system controls the circumferential stirring device to have a first rotational speed.

When the material to be stirred includes various powders, kneading solvents, and dilution solvents, and the viscosity of the material to be stirred is less than the preset viscosity, the control system controls the circumferential stirring device to have a second rotational speed, and the second rotational speed is greater than the first rotational speed.

For another example, when the accommodating space 21 is used for accommodating cleaning liquid, the control system controls the agitating assembly 10 to rotate counterclockwise with the circumferential agitating device. Optionally, the cleaning liquid is water, or a kneading solvent.

Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations on the present application. Those skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the present application, and these improvements and modifications are also considered as the protection scope of the present application.

Claims (11)

1. A stirring assembly, the stirring assembly comprising:

a rotating shaft;

the rotary table is connected to the rotating shaft and is coaxially arranged with the rotating shaft, and the rotary table is used for rotating under the drive of the rotating shaft; and

The blades are connected to the outer peripheral side of the turntable and are arranged at intervals along the circumferential direction of the turntable, and the blades comprise first shearing pieces which are used for providing shearing force in the rotation direction of the blades; and

The second shearing pieces are fixedly connected to the paddles and are used for providing shearing force in a direction parallel to the rotating shaft.

2. The stirring assembly of claim 1, wherein the shaft includes oppositely disposed first and second ends, the turntable being disposed proximate the second end;

the blade comprises a first surface, a second surface and a first side surface and a second side surface, wherein the first surface and the second surface are arranged in a back-to-back mode, the first side surface and the second side surface are connected between the first surface and the second surface, and the first surface is close to the first end compared with the second surface;

the first shear member includes a first inclined surface on the first surface proximate the first side surface;

and/or the first shearing member comprises a second inclined surface of the second surface adjacent to the first side surface.

3. The stirring assembly of claim 2, wherein the first shear member further comprises a third inclined surface on the first surface proximate the second side;

and/or, the first shearing member further comprises a fourth inclined surface of the second surface adjacent to the second side surface.

4. A mixing assembly as defined in claim 3 wherein said first shear member tapers in a direction away from said turntable to a minimum thickness between said second surface.

5. The stirring assembly of claim 1, wherein the shaft includes oppositely disposed first and second ends, the turntable being proximate the second end;

the second shearing part is arranged along the direction parallel to the rotating shaft, the first part of the second shearing part is arranged on one side of the blade facing the first end, the second part of the second shearing part is arranged on one side of the blade facing the second end, and the length of the first part along the direction parallel to the rotating shaft is larger than the length of the second part along the direction parallel to the rotating shaft.

6. The stirring assembly of claim 5, wherein the second shear member comprises pins located on a side of the paddles remote from the turntable, the pins on each of the paddles being one or more in number, the pins on the paddles located adjacent to each other being at least partially staggered in the circumferential direction of the turntable.

7. The stirring assembly of claim 5, wherein the second shear member is welded to the blade as one piece.

8. The stirring assembly of claim 5, wherein the first portion comprises:

A main body portion fixedly connected to the blade; and

And the extension part is integrally connected with the main body part, is positioned at one end of the main body part, which is away from the blade, and continuously reduces in the outer diameter along the direction away from the blade.

9. The stirring assembly of any one of claims 1-8, wherein the shaft includes oppositely disposed first and second ends, the turntable being disposed proximate the second end;

the blade comprises a first surface, a second surface and a first side surface and a second side surface, wherein the first surface and the second surface are arranged in a back-to-back mode, the first side surface and the second side surface are connected between the first surface and the second surface, and the first surface is close to the first end compared with the second surface; the first surface is a fifth inclined surface for providing a thrust force toward the first end when the turntable rotates.

10. The stirring assembly of claim 9, wherein the fifth inclined surface is disposed at a predetermined angle to the direction of rotation of the turntable, the predetermined angle α satisfying: alpha is more than 0 DEG and less than or equal to 30 deg.

11. A kneader, characterized in that the kneader comprises:

the kneading cylinder is provided with an accommodating space for accommodating the materials to be stirred; and

A mixing assembly as claimed in any one of claims 1 to 10, in which the shaft is disposed along a central axis of the kneading barrel, the mixing assembly being adapted to rotate about the central axis of the kneading barrel to provide at least the material to be mixed with shear forces in a direction of rotation of the paddles, shear forces in a direction parallel to the shaft and mixing centrifugal forces.