Planetary vacuum dispersion stirrer with mechanical defoaming function

Abstract

The utility model relates to a planetary vacuum dispersing and stirring machine with a mechanical defoaming function, which comprises a rack, a planetary transmission box, an upper barrel, a lower barrel, a low-speed stirring assembly, a high-speed dispersing assembly and a liquid level defoaming mechanism, the liquid level defoaming mechanism comprises a stator fixing seat, a cylindrical stator and an impeller rotor, the cylindrical stator is provided with a liquid outlet, and the impeller rotor is provided with a liquid outlet. The stator fixing seat is connected with the cylindrical stator, the cylindrical stator is sleeved outside the high-speed shaft, the stator fixing seat is installed on the high-speed bearing seat, the impeller rotor is installed on the high-speed shaft, the upper portion of the impeller rotor is located inside the cylindrical stator, and the lower portion of the impeller rotor is located outside the cylindrical stator. According to the stirring machine, on the basis that original vacuum defoaming is reserved, the mechanical foam defoaming mechanism above the liquid level is additionally arranged, through combination of vacuum defoaming and mechanical defoaming on the liquid level, rapid defoaming is achieved, foam is effectively prevented from spreading and rising into cavities of transmission mechanisms such as an upper planet box, and materials with more foam can be effectively defoamed. The production efficiency and the product quality are greatly improved, and meanwhile the difficulty of cleaning equipment is reduced.

Description

Technical Field

[0001] This utility model relates to a mixer, and more particularly to a planetary vacuum dispersion mixer with mechanical defoaming function. Background Technology

[0002] Currently, in industries such as chemicals and electronic slurries using planetary mixers, the mixing of materials like laundry detergent pods and ceramic slurries generates a large number of bubbles after addition and during the mixing process due to the characteristics of some materials. Existing methods in planetary vacuum mixers, relying solely on vacuuming to defoam, actually increase the number of bubbles in a short time, causing foam to rise within the tank and soak the entire planetary box and the high-speed bearing housing at the top of the dispersion component. Liquid entering the transmission structure affects the equipment's seals and bearings, reducing its lifespan. Furthermore, some material adheres to the planetary box and the inside of the upper tank, causing changes in the material ratio and resulting in unstable product quality. The material carried up by the foam is also difficult to clean. If vacuuming is not used and natural settling is allowed to defoam, it requires a long time, significantly impacting production efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a planetary vacuum dispersion mixer with mechanical defoaming function. This mixer retains the original vacuum defoaming function and adds a foam mechanical defoaming mechanism above the liquid surface. By combining vacuum defoaming and liquid surface mechanical defoaming, it can achieve rapid defoaming and effectively prevent foam from spreading and rising into the upper planetary box and other transmission mechanism cavities. For materials with a lot of foam, it can greatly improve production efficiency and product quality, while reducing the difficulty of cleaning the equipment.

[0004] The technical solution to the above-mentioned technical problems is: a planetary vacuum dispersion mixer with mechanical defoaming function, including a frame, a planetary transmission box, an upper tank, a lower tank, a low-speed stirring component, and a high-speed dispersion component. The high-speed dispersion component includes a high-speed shaft and a high-speed bearing seat. The high-speed shaft is connected to the planetary transmission box through the high-speed bearing seat. It also includes a liquid surface defoaming mechanism, which includes a stator fixing seat, a cylindrical stator, and an impeller rotor. The cylindrical stator has a drain port. The stator fixing seat is connected to the cylindrical stator. The cylindrical stator is fitted outside the high-speed shaft. The stator fixing seat is detachably mounted on the high-speed bearing seat. The impeller rotor is detachably mounted on the high-speed shaft. The upper part of the impeller rotor is located inside the cylindrical stator, and the lower part of the impeller rotor is located outside the cylindrical stator.

[0005] Furthermore, the impeller rotor includes a mounting sleeve and a plurality of blades evenly distributed on the outer circumference of the mounting sleeve, wherein the blades are fixed to the mounting sleeve at an angle.

[0006] Furthermore, the included angle β between the blade and the horizontal plane is 45° to 90°.

[0007] Furthermore, the cylindrical stator is composed of a circular annular top plate and a cylinder fixedly connected to the circular annular top plate. The cylinder has at least two drain ports, and the circular annular top plate is connected to the stator fixing seat.

[0008] By adopting the above technical solution, this utility model has the following beneficial effects:

[0009] 1. Improve product quality. This utility model adds a liquid surface defoaming mechanism, which moves in a circular motion following the revolution of the planetary gearbox to eliminate foam on its trajectory. The combination of the liquid surface defoaming mechanism and vacuum defoaming can achieve rapid defoaming, avoiding the situation where foam carries materials to adhere to the planetary gearbox and the inside of the upper tank, causing changes in the formula and resulting in unstable product quality.

[0010] 2. Improved production efficiency. Using this invention, there is no need to wait for the foam to self-heat and collapse; continuous slurry mixing can be performed, reducing waiting time and improving production efficiency.

[0011] 3. Reduced costs. This invention prevents foam from causing materials to adhere to the planetary transmission box and the inside of the upper drum, thereby reducing the need for cleaning and tidying the upper drum after each batch of materials is processed, saving energy, and achieving the goal of reducing costs.

[0012] The technical features of a planetary vacuum dispersion mixer with mechanical defoaming function according to 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 vacuum dispersion mixer with mechanical defoaming function according to this utility model.

[0014] Figure 2 : Schematic diagram of the installation of the liquid surface defoaming mechanism of this utility model.

[0015] Figure 3 : Front view of the impeller rotor of this utility model.

[0016] Figure 4 Top view of the impeller rotor of this utility model.

[0017] Figure 5 : A three-dimensional view of the cylindrical stator of this utility model.

[0018] In the diagram: 1-Upper tank, 2-Lower tank, 3-Low-speed stirring component, 4-High-speed dispersion component, 41-High-speed shaft, 42-High-speed bearing seat, 5-Liquid surface defoaming mechanism, 51-Impeller rotor, 511-Mounting sleeve, 512-Blade, 52-Cylindrical stator, 521-Drain port, 522-Circular top plate, 523-Cylinder, 53-Stator fixing seat, 6-Planetary transmission box, 7-Frame, 8-Set screw.

[0019] P represents the liquid level. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] Example 1: A planetary vacuum dispersion mixer with mechanical defoaming function, such as Figures 1-5 As shown, the assembly includes a frame 7, a planetary gearbox 6, an upper tank 1, a lower tank 2, a low-speed stirring assembly 3, and a high-speed dispersion assembly 4. The high-speed dispersion assembly includes a high-speed shaft 41 and a high-speed bearing seat 42. The high-speed shaft 41 is connected to the planetary gearbox 6 through the high-speed bearing seat 42. The lower tank has a vacuum port and also includes a liquid surface defoaming mechanism 5. The liquid surface defoaming mechanism 5 includes a stator fixing seat 53, a cylindrical stator 52, and an impeller rotor 51. The cylindrical stator 52 has a drain port 521 to facilitate the discharge of liquid formed after the bubbles burst back into the lower tank. The stator fixing seat 53 is connected to the cylindrical stator 52. The cylindrical stator 52 is fitted outside the high-speed shaft 41. The stator fixing seat 53 is installed on the high-speed bearing seat 42 by set screws 8. The impeller rotor 51 is installed on the high-speed shaft 41 by screws. The upper part of the impeller rotor 51 is located inside the cylindrical stator 52, and the lower part of the impeller rotor 51 is located outside the cylindrical stator 52. Part of the impeller rotor 51 is inside the cylindrical stator 52, and part of it extends below the cylindrical stator 52. The impeller rotor 51 extending below the cylindrical stator 52 drives the external foam into the cylindrical stator 52 for defoaming treatment. The liquid formed after the bubbles are destroyed is discharged through the drain port 521.

[0022] In this embodiment, the stator mounting base 53 is mounted on the high-speed bearing housing 42 by set screws 8, and the impeller rotor 51 is mounted on the high-speed shaft 41 by screws. This allows for convenient and quick adjustment of the installation height of the defoaming mechanism 5 on the high-speed shaft 41 and high-speed bearing housing 42 according to the liquid level. The defoaming mechanism 5 follows the revolution of the planetary gearbox 6 in a circular motion, while the impeller rotor 51 rotates at high speed under the drive of the high-speed shaft, causing the foam on the circular trajectory of the defoaming mechanism 5 to quickly dissipate. As an alternative, the stator mounting base 53 and the impeller rotor 51 can also be mounted on the high-speed bearing housing 42 and high-speed shaft 41 respectively using other detachable methods.

[0023] In this embodiment, the impeller rotor 51 includes a mounting sleeve 511 and four blades 512 evenly distributed on the outer circumference of the mounting sleeve. The blades 512 are fixed to the mounting sleeve 511 at an angle. The angle β between the blades and the horizontal plane is 60°. As a variation, the number of blades and the angle β between the blades and the horizontal plane can be adjusted according to actual conditions. Generally, the number of blades is 3 to 6, and the angle β between the blades and the horizontal plane is 45 to 90°.

[0024] In this embodiment, the cylindrical stator 52 is composed of an annular top plate 522 and a cylindrical tube 523 fixedly connected to the annular top plate. The cylindrical tube 523 has four drain ports 521. The annular top plate 522 is connected to the stator mounting base 53. As a variation, the number of drain ports can be increased or decreased according to actual needs, as long as the usage requirements are met.

[0025] During operation, the upper and lower tanks are sealed, and a vacuum is drawn through the vacuum port. The vacuum, together with the liquid surface defoaming mechanism 5, defoams the slurry.

[0026] Except for the liquid surface defoaming mechanism, the structure and connection relationship of other components of this utility model are the same as those of the prior art, and will not be described in detail here.

[0027] Trial test: A 200L planetary vacuum dispersion mixer with the structure described in this embodiment was used to mix an aqueous ceramic slurry with a viscosity of 600 centipoise and a temperature of 25°C. The rotation speed was set to 25 RPM, the low-speed stirring speed to 36.8 RPM, and the high-speed dispersion speed to 1800 RPM. A vacuum of -40 kPa was directly applied; no bubbles rose to the planetary gearbox, and the bubbles on the liquid surface basically disappeared after 5 minutes. The vacuum was increased to -60 kPa, and degassing continued; no bubbles rose to the planetary gearbox, and the bubbles on the liquid surface basically disappeared after 8 minutes. The vacuum was then increased to -85 kPa, and degassing continued; no bubbles rose to the planetary gearbox, and the bubbles on the liquid surface disappeared after 30 minutes. The total degassing time was 43 minutes, completing the degassing of the slurry and meeting the degassing requirements.

[0028] Comparative Test: The same material as in the trial test of this utility model was mixed using a planetary vacuum dispersion mixer without the added defoaming mechanism 5, and tested at the same temperature and speed. When the vacuum was reduced to -30 kPa, the bubbles quickly submerged the planetary transmission box. Only by first reducing the vacuum to -20 kPa did the bubbles on the liquid surface essentially disappear after 45 minutes; continuing to reduce the vacuum to -40 kPa, the bubbles on the liquid surface essentially disappeared after 23 minutes; increasing the vacuum to -60 kPa and continuing defoaming, the bubbles on the liquid surface essentially disappeared after 16 minutes; further increasing the vacuum to -85 kPa and continuing defoaming, the bubbles on the liquid surface disappeared after 42 minutes, at which point defoaming was complete, for a total defoaming time of 126 minutes. It is evident that the planetary vacuum dispersion mixer without the added defoaming mechanism 5, relying solely on vacuum defoaming, requires approximately 2.93 times the defoaming time of this utility model.

Claims

1. A planetary vacuum dispersion mixer with mechanical defoaming function, comprising a frame (7), a planetary transmission box (6), an upper tank (1), a lower tank (2), a low-speed stirring component (3), and a high-speed dispersion component (4), wherein the high-speed dispersion component comprises a high-speed shaft (41) and a high-speed bearing seat (42), the high-speed shaft being connected to the planetary transmission box via the high-speed bearing seat, characterized in that: It also includes a liquid surface defoaming mechanism (5), which includes a stator fixing seat (53), a cylindrical stator (52) and an impeller rotor (51). The cylindrical stator has a drain port (521). The stator fixing seat is connected to the cylindrical stator. The cylindrical stator (52) is fitted outside the high-speed shaft (41). The stator fixing seat (53) is detachably mounted on the high-speed bearing seat (42). The impeller rotor (51) is detachably mounted on the high-speed shaft (41). The upper part of the impeller rotor is located inside the cylindrical stator, and the lower part of the impeller rotor is located outside the cylindrical stator.

2. The planetary vacuum dispersion mixer with mechanical defoaming function according to claim 1, characterized in that: The impeller rotor includes a mounting sleeve (511) and a plurality of blades (512) evenly distributed on the outer circumference of the mounting sleeve, wherein the blades are fixed to the mounting sleeve at an angle.

3. A planetary vacuum dispersion mixer with mechanical defoaming function according to claim 2, characterized in that: The angle β between the blade and the horizontal plane is 45° to 90°.

4. A planetary vacuum dispersion mixer with mechanical defoaming function according to any one of claims 1-3, characterized in that: The cylindrical stator (52) is composed of a circular top plate (522) and a cylindrical cylinder (523) fixedly connected to the circular top plate. The cylindrical cylinder has at least two drain ports (521), and the circular top plate is connected to the stator fixing seat.

Images