Planetary disperser

Abstract

The present application relates to a kind of planetary disperser, it is suitable for the slurry mixing of viscosity less than two million cP and solid content less than 60%, including revolution drive motor, dispersion drive motor, hollow shaft, center shaft, planetary box, stirring barrel, one-way flywheel, stirring rod and at least two dispersion components, belt pulley I and belt pulley II are installed on the center shaft in planetary box, at least one dispersion component is installed with belt pulley III on the upper end of dispersion shaft, belt pulley III is connected with belt pulley II by belt, at least one other dispersion component is connected with one-way flywheel on the upper end of dispersion shaft, one-way flywheel is connected with belt pulley I by belt, two bearing seats are further provided on planetary box, dispersion shaft is positioned in bearing seat by bearing, stirring rod is installed on the bottom surface of planetary box by detachable mode.This dispersion machine cancels the low-speed stirring slurry of original planetary disperser, and installs one-way flywheel on at least one stirring shaft, can improve slurry mixing efficiency, reduce energy consumption.

Description

Technical Field

[0001] This invention relates to a mixing apparatus, and more particularly to a planetary disperser suitable for mixing slurries with a viscosity of less than 20,000 cP and a solid content of less than 60%. Background Technology

[0002] Planetary dispersion equipment is widely used in the mixing and blending equipment of the new energy battery and coating industries. Existing planetary dispersion equipment mostly consists of a low-speed stirring paddle and a high-speed dispersing component. The stirring paddle and dispersing component rotate on their own axes while being driven by a planetary gearbox to revolve. When this type of planetary dispersion equipment is used to prepare slurries with a viscosity less than 20,000 cP and a solid content less than 60%, the preparation time is between 2 and 8 hours, which is time-consuming and energy-intensive.

[0003] Chinese utility model patent 201922207184.X discloses a planetary mixer for uniform mixing. While this mixer can achieve more uniform mixing of materials to a certain extent, it still has the following shortcomings: 1. It is equipped with a low-speed stirring paddle. During the mixing process, the low-speed stirring paddle revolves and rotates, which inhibits the dispersion effect of the dispersion disc on the slurry. The dispersion and mixing effect is poor for slurries with a viscosity of less than 20,000 cP and a solid content of less than 60%; 2. The main dispersion shaft is connected to the first and second dispersion shafts by gear and turbine transmission, which greatly limits the speed and cannot achieve high speed; 3. The first and second dispersion shafts can only rotate synchronously in opposite directions, and cannot achieve single-shaft rotation, which is not flexible in use and has high energy consumption. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a planetary disperser suitable for mixing slurries with a viscosity of less than 20,000 cP and a solid content of less than 60%. This disperser eliminates the low-speed stirring paddle of the original planetary disperser and installs a one-way flywheel on at least one stirring shaft, which can improve the slurry mixing efficiency and reduce energy consumption.

[0005] The technical solution to the above-mentioned technical problems is as follows: a planetary disperser, comprising a revolution drive motor, a dispersion drive motor, a hollow shaft, a central shaft, a planetary gearbox, a stirring tank, a one-way flywheel, a stirring rod, and at least two dispersion components. The central shaft is fitted inside the hollow shaft and is connected to the dispersion drive motor. The hollow shaft is connected to the revolution drive motor, and the bottom end of the hollow shaft is connected to the planetary gearbox. The central shaft extends into the planetary gearbox. Belt pulley I and belt pulley II are installed on the central shaft inside the planetary gearbox. The dispersion components include a dispersion shaft and dispersion components mounted on the dispersion shaft. Belt pulley III is installed on the upper end of the dispersion shaft of at least one dispersion component, and belt pulley III is connected to belt pulley II via a belt. The upper end of the dispersion shaft of another at least one dispersion component is connected to a one-way flywheel, and the one-way flywheel is connected to belt pulley I via a belt. The planetary gearbox is also provided with two bearing seats. The dispersion shaft passes through the bearing seats and is positioned within the bearing seats by bearings. The stirring rod is detachably mounted on the bottom surface of the planetary gearbox.

[0006] Furthermore, there are two dispersion components, which are arranged symmetrically.

[0007] Furthermore, the dispersing component is a dispersing disk, and the installation height of the dispersing disk is different on different dispersing shafts.

[0008] Furthermore, the stirring rod is L-shaped.

[0009] By adopting the above technical solution, the present invention has the following beneficial effects: 1. By eliminating the interference of the original low-speed agitator, the mixing efficiency can be improved by 23%-40%. Furthermore, it specifically reduces the mutual power consumption between agitation and dispersion at low viscosity, allowing for a 40%-50% reduction in the installed power of equipment with the same processing capacity, further reducing energy consumption. This invention is a technical improvement on the structure of the original planetary disperser, discarding the planetary agitator-related structures. In this case, the eliminated agitator will not inhibit the dispersion and mixing effect of the dispersion disc on the slurry. For slurries with a viscosity less than 20,000 cP and a solid content less than 60%, it can improve mixing efficiency.

[0010] 2. The rotation of one or more dispersing shafts can be selected according to actual needs, making it more flexible, versatile, and energy-efficient. This invention replaces the drive wheel of at least one dispersing shaft with a unidirectional flywheel. Other dispersing shafts without unidirectional flywheels can achieve two different rotation directions through forward and reverse motor drive; dispersing shafts with unidirectional flywheels can only rotate in one direction, and do not rotate when the motor drives in the other direction. With this improvement, it can be configured so that when rotating in one direction, one or more dispersing shafts operate while the other one or more dispersing shafts do not operate; when rotating in another direction, all dispersing shafts operate in the same direction. The number of dispersing shafts operating can also be controlled according to the direction. Under the same rotational speed and linear velocity, power consumption is effectively distributed and controlled, resulting in better mixing efficiency and greater energy savings.

[0011] 3. The dispersion discs on the dispersion shaft are arranged with varying heights. A one-way flywheel can control the operation of only the lower-height portion of the dispersion shaft when material levels are low, reducing material splashing losses. In production requiring small-scale slurry production (relative to the equipment's effective working volume), the existing equipment uses a uniform installation height for the dispersion discs. Due to the lower liquid level, this results in more slurry splashing during production, wasting a significant amount of material. This invention allows for selective rotation of the dispersion shaft with a dispersion disc at an appropriate height, without the need for an agitator to generate additional turbulence, thus significantly reducing material splashing losses when producing small quantities.

[0012] The technical features of a planetary disperser of the present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0013] Figure 1 : A schematic diagram of a planetary disperser according to the present invention.

[0014] Figure 2 : A schematic diagram of a planetary disperser structure according to Embodiment 1 of the present invention.

[0015] Figure 3 : Schematic diagram of the connection between the planetary box, the dispersion component, and the stirring rod of the present invention.

[0016] Figure 1 The middle arrow indicates the direction of rotation of the dispersion axis. Detailed Implementation

[0017] Example 1: A planetary disperser, such as Figures 1-3As shown, it includes a frame 1, a revolution drive motor 7, a dispersion drive motor 8, a hollow shaft 10, a central shaft 9, a planetary gearbox 6, a mixing tank 3, a one-way flywheel 11, a stirring rod 12 located inside the mixing tank, and two dispersion components 2, which are arranged symmetrically. The central shaft is fitted inside the hollow shaft. The central shaft 9 is connected to the dispersion drive motor 8. The hollow shaft 10 is connected to the revolution drive motor 7 through a reducer. The bottom end of the hollow shaft 10 is connected to the planetary box 6. The central shaft 9 extends into the planetary box and is installed in the positioning groove 61 provided on the bottom surface of the planetary box through a bearing. Belt pulley I and belt pulley II are installed on the central shaft inside the planetary box. The dispersion component includes a dispersion shaft 21 and a dispersion assembly 22 installed on the dispersion shaft. Belt pulley III 5 is installed on the upper end of the dispersion shaft 21 of one dispersion component. Belt pulley III is connected to belt pulley II through a belt. The upper end of the dispersion shaft 21 of the other dispersion component is connected to a one-way flywheel 11. One-way flywheel 11 is connected to belt pulley I through a belt. The planetary box is also provided with two bearing seats 4. The dispersion shaft 21 passes through the bearing seats 4 and is positioned in the bearing seats through the bearings. The upper part of the dispersion shaft, belt pulley I, belt pulley II, belt pulley III 5, and one-way flywheel 11 are all located inside the planetary box 6. The stirring rod 12 is installed on the bottom surface of the planetary box in a detachable manner.

[0018] In this embodiment, the dispersing component is a dispersing disc, and two dispersing discs are installed on each dispersing shaft. The installation height of the dispersing disc on the dispersing shaft with the unidirectional dispersing wheel is higher than the installation height of the dispersing disc on the same layer of the other dispersing shaft. That is, the installation height of the bottommost dispersing disc on the dispersing shaft with the unidirectional dispersing wheel is higher than the installation height of the bottommost dispersing disc on the other dispersing shaft, and the installation height of the topmost dispersing disc on the dispersing shaft with the unidirectional dispersing wheel is higher than the installation height of the topmost dispersing disc on the other dispersing shaft (e.g., ...). Figure 2 As shown in the figure. As a variation, the number of dispersing discs installed on the dispersing shaft can be increased or decreased according to actual needs; one, three, or four discs can be installed.

[0019] In this embodiment, the stirring rod is L-shaped. As a variation, the stirring rod can also adopt other suitable shapes.

[0020] As a variation of this embodiment, the number of dispersing components can be increased according to the actual situation, and the number of unidirectional flywheels installed on the dispersing shaft can also be determined according to the actual situation.

[0021] Features of this embodiment: 1. The planetary gearbox can drive a pair of dispersion shafts to revolve, forcing the dispersion shafts to revolve within the high-viscosity material, ensuring that even slow-flowing materials at high viscosity will contact the dispersion discs. 2. One dispersion shaft has a one-way flywheel. When the motor rotates in the direction of separation of the one-way flywheel, the one-way flywheel on this dispersion shaft is not engaged, and the dispersion shaft does not rotate; thus, energy consumption can be directly reduced by reducing the number of working parts while ensuring a certain speed and linear velocity. 3. One dispersion shaft has a one-way flywheel. When the motor rotates in the direction of engagement of the one-way flywheel, this one-way flywheel engages, and all dispersion shafts begin to rotate; thus, all dispersion shafts can be activated as needed while ensuring a certain speed and linear velocity, improving the dispersion capacity of the equipment and significantly increasing efficiency when producing high-viscosity slurries. 4. The dispersion discs on the dispersion shaft are arranged with a height difference. When the material quantity is low, only the dispersion discs arranged at the lower position can be activated by cooperating with the one-way flywheels, greatly reducing material splashing caused by excessively high dispersion discs. 5. The planetary gearbox also has a detachable stirring paddle that revolves with the planetary gearbox to agitate high-viscosity slurry.

[0022] Structures not described in detail in this invention, such as the connection method between the central shaft and the dispersion drive motor, the connection method between the hollow shaft and the revolution drive motor, and the specific structure of the frame and the mixing tank, are the same as those in the prior art and will not be described again here.

[0023] Comparative experiment: Comparative example: The slurry is prepared using existing planetary dispersion equipment, which consists of a low-speed agitator and a high-speed dispersion component. The agitator and dispersion component rotate on their own axes and are also driven by the planetary box to revolve.

[0024] Comparative example: The planetary disperser described in Example 1 of this invention was used to prepare the slurry. The two dispersion components revolve around the sun and rotate on their own axis, while the stirring rod revolves around the sun.

[0025] Table 1: Summary of Comparative Experiment Results The particle size, solid content, and settling time of the finished slurries obtained from the control example and comparative example were consistent. As can be seen from the table above, the time required to prepare the slurry using Example 1 of the present invention is significantly shorter than the time required using existing planetary dispersion equipment.

[0026] In practical trials, this invention revealed that the original planetary dispersion equipment required 180-300 minutes to produce various coatings and ceramic slurries. However, by simply replacing the equipment with this invention, the production time was significantly reduced to 100-230 minutes. Specifically, the slurry production time can be reduced from 300 minutes to 230 minutes, or from 180 minutes to 100 minutes, directly improving efficiency by 23%-40%. Furthermore, this design specifically reduces the mutual power consumption between stirring and dispersion at low viscosity levels, allowing for a 40%-50% reduction in the installed power of equipment with the same processing capacity, further lowering energy consumption.

[0027] Addressing the issue of process stability, this invention differs from the industry norm where switching equipment requires specialized adjustments to entirely new process parameters. By replacing the original planetary dispersion equipment with this invention, it can be used directly while maintaining the original dispersion linear velocity and stirring speed. This lowers the barrier to equipment use and ensures process replicability and continuity.

Claims

1. A planetary disperser, characterized in that: The system includes a revolution drive motor (7), a dispersion drive motor (8), a hollow shaft (10), a central shaft (9), a planetary gearbox (6), a stirring tank (3), a one-way flywheel (11), a stirring rod (12), and at least two dispersion components (2). The central shaft is fitted inside the hollow shaft and is connected to the dispersion drive motor. The hollow shaft is connected to the revolution drive motor and the bottom end of the hollow shaft is connected to the planetary gearbox. The central shaft extends into the planetary gearbox. Belt pulley I and belt pulley II are installed on the central shaft inside the planetary gearbox. The dispersion components include a dispersion shaft (21) and a dispersion assembly (22) installed on the dispersion shaft. Belt pulley III (5) is installed on the upper end of the dispersion shaft of at least one dispersion component. Belt pulley III is connected to belt pulley II via a belt. The upper end of the dispersion shaft of another at least one dispersion component is connected to a one-way flywheel. The one-way flywheel is connected to belt pulley I via a belt. The planetary gearbox is also provided with two bearing seats (4). The dispersion shaft passes through the bearing seats and is positioned within the bearing seats by bearings. The stirring rod is detachably installed on the bottom surface of the planetary gearbox. The stirring rod is L-shaped.

2. The planetary disperser according to claim 1, characterized in that: There are two distributed components, which are arranged symmetrically.

3. A planetary disperser according to claim 1 or 2, characterized in that: The dispersion component is a dispersion disk, and the installation height of the dispersion disk is different on different dispersion shafts.

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