JP2024042647A - Stirring device and stirring method - Google Patents

Abstract

[Problem] To provide an agitation device that generates a swirling flow at the bottom of a tank to improve the up-down liquid flow and refine the particle size of an emulsion. [Solution] An agitation device that forms an emulsion by agitating and emulsifying liquid and liquid, liquid and liquid containing solids, or liquid containing solids and liquid containing solids as raw materials, comprising a tank 1 for storing the raw materials, and a loading case 8 that is provided at the bottom of the tank 1 and can rotate clockwise or counterclockwise, the loading case 8 having a lower liquid flow hole at the bottom and an upper liquid flow hole at the top, and the liquid and emulsion are sucked into the loading case 8 from the lower liquid flow hole or the upper liquid flow hole depending on the rotation direction of the loading case 8. [Selected Figure] Figure 1

Description

The present invention relates to a stirring device and a stirring method that improve the flow of stirring liquid in the vertical direction within a tank.

2. Description of the Related Art Stirring devices are used to agitate liquids or liquids and solids in cosmetics, foods, chemicals, or pharmaceuticals to atomize, atomize, and stir them. The stirring device includes a substantially cylindrical tank in which a rotating blade provided on a rotating shaft rotates to stir the raw material, a drive unit for rotating the rotating shaft, and the like.

In conventional stirrers, the flow of the stirred liquid in the tank is mainly horizontal (the direction in which the stirring blades rotate), and there is concern that insufficient stirring may occur due to insufficient liquid flow in the vertical direction.

Patent Document 1 describes the configuration of a stirring device that is equipped with a case disper at the bottom of a tank and can guide liquid from the bottom of the tank to the top to improve the liquid flow in the vertical direction.

Patent document 1: Patent Publication No. 7025591

However, although the stirring device described in Patent Document 1 can improve the vertical liquid flow by guiding the liquid flow from the bottom of the tank to the top, it is difficult to use when stirring and emulsifying liquids to form an emulsion. However, there has been a problem in that it is desired to further refine the emulsion.

An object of the present invention is to solve the above-mentioned problems by generating a swirling flow in the lower part of the tank, improving the upper and lower liquid flows, and making the particle size of the emulsion finer.

In order to solve the above problems, the present invention provides a stirring device that stirs and emulsifies liquids and liquids, liquids containing liquids and solids, or liquids containing solids and liquids containing solids as raw materials to form an emulsion, comprising:
A tank for storing the raw material;
A loading case provided at the bottom of the tank and rotatable in a clockwise or counterclockwise direction,
The loading case has a lower liquid flow hole in the lower part and an upper liquid flow hole in the upper part,
The present invention provides a stirring device characterized in that liquid and emulsion are sucked into the loading case from either the lower liquid flow hole or the upper liquid flow hole depending on the rotating direction of the loading case.

With this configuration, liquids, liquids containing solids, or liquids containing solids and liquids containing solids generate swirling flow at the bottom of the tank, improve the vertical liquid flow, and refine the particle size of the emulsion. can do. Here, the liquid refers to oil or water, and the liquid containing solid refers to a solution in which powder and oil are dispersed.

The stirring device may include a turbine blade that is provided inside the loading case and is freely rotated by a liquid flow accompanying rotation of the loading case.

With this configuration, the turbine blades are freely rotated by the liquid flow, and the stirring material naturally passes through the narrow gap between the inner surface of the rotating case and the turbine blades, generating homogeneous, fine droplets through strong shear and impact forces. The same effect can also be achieved by fixing the turbine blades.

The stirring device may have a configuration in which the loading case is rotated at a predetermined number of rotations, and the turbine blades are rotated at a number of rotations smaller than the number of rotations of the loading case.

With this configuration, the rotation direction can be either direction, but by making the rotation direction of the loading case and the rotation direction of the turbine blade the same, the larger the difference between the rotation speed of the loading case and the rotation speed of the turbine blade, the faster the turbine blade becomes. It is possible to obtain a greater effect than when rotating freely, and to generate homogeneous and fine droplets by strong shearing force and impact force.

Furthermore, in order to solve the above problems, the present invention provides a stirring method for forming an emulsion by stirring and emulsifying liquids and liquids, liquids containing liquids and solids, or liquids containing solids and liquids containing solids as raw materials. hand,
a raw material storage step of storing the raw material in a tank;
The loading case provided at the bottom of the tank is rotated at a predetermined rotation speed, and the liquid and emulsion are sucked into the loading case through the lower liquid flow hole provided at the bottom of the loading case, and the rotor rotation of the loading case, in which a turbine blade provided in the loading case is rotated at a rotational speed lower than the rotational speed of the loading case, and liquid and emulsion are discharged from an upper liquid flow hole provided in the upper part of the loading case; The present invention provides a stirring method characterized by comprising the steps of:

With this configuration, a swirling flow is generated in the lower part of the tank to facilitate suction into the loading case, and the upper and lower liquid flows are improved, thereby making it possible to make the particle size of the emulsion finer.

Furthermore, in order to solve the above problems, the present invention provides a stirring method for forming an emulsion by stirring and emulsifying liquids and liquids, liquids containing liquids and solids, or liquids containing solids and liquids containing solids as raw materials. a raw material storage step in which the raw material is stored in a tank, and a loading case provided at the bottom of the tank is rotated at a predetermined rotation speed, and the liquid is discharged from an upper liquid flow hole provided at the top of the loading case. And while the emulsion is sucked into the loading case, a turbine blade provided in the loading case is rotated at a rotation speed smaller than the rotation speed of the loading case, and the lower liquid provided in the lower part of the loading case is removed. The present invention provides a stirring method characterized by comprising a rotating case rotation step for discharging liquid and emulsion from flow holes.

With this configuration, a swirling flow is generated in the lower part of the tank to facilitate suction into the loading case, and the upper and lower liquid flows are improved, thereby making it possible to make the particle size of the emulsion finer.

With the stirring device of the present invention, it is possible to generate a swirling flow in the lower part of the tank, improve the upper and lower liquid flows, and make the particle size of the emulsion finer.

It is a figure explaining the stirring device in Example 1 of the present invention. FIG. 2 is a diagram illustrating a loading case according to the first embodiment of the present invention. It is a figure explaining the turbine case in Example 1 of the present invention. It is a figure explaining the turbine blade in Example 1 of the present invention. It is a figure explaining the homostand in Example 1 of this invention. FIG. 2 is a perspective view of a turbine blade according to the first embodiment of the present invention. 4 is a diagram illustrating the liquid flow when the loading case in the first embodiment of the present invention is rotated counterclockwise as viewed from above. FIG. FIG. 3 is a diagram illustrating a liquid flow when the loading case in Example 1 of the present invention is rotated clockwise when viewed from above. It is a 1st graph which shows the test result of the stirring method in Example 1 of this invention. It is a 2nd graph which shows the test result of the stirring method in Example 1 of this invention. It is a 3rd graph which shows the test result of the stirring method in Example 2 of this invention. It is a 4th graph which shows the test result of the stirring method in Example 2 of this invention.

A stirring device according to Example 1 of the present invention will be explained with reference to FIGS. 1 to 9. FIG. 1 is a diagram illustrating a stirring device in Example 1 of the present invention. FIG. 2 is a diagram illustrating the loading case in Example 1 of the present invention, in which (a) shows the gap l1, and (b) shows the gap l2. FIG. 3 is a diagram illustrating a turbine case in Example 1 of the present invention, in which (a) is a top view and (b) is a side sectional view. FIG. 4 is a diagram illustrating a turbine blade in Example 1 of the present invention, in which (a) is a top view and (b) is a side sectional view. FIG. 5 is a diagram illustrating a homostand in Example 1 of the present invention, in which (a) is a top view, (b) is a side sectional view, and (c) is a bottom view. FIG. 6 is a perspective view of a turbine blade in Example 1 of the present invention. FIG. 7 is a diagram illustrating the liquid flow when the loading case in Example 1 of the present invention is rotated counterclockwise when viewed from above. FIG. 8 is a diagram illustrating the liquid flow when the loading case in Example 1 of the present invention is rotated clockwise when viewed from above. FIG. 9 is a first graph showing the test results of the stirring method in Example 1 of the present invention. FIG. 10 is a second graph showing the test results of the stirring method in Example 1 of the present invention.

The stirring device 100 in Example 1 includes a tank 1 made of stainless steel and having a substantially cylindrical shape, with the center portion of the bottom and top surfaces gently protruding. The top surface of the tank 1 has a raw material A input port 6 into which one of the raw materials to be stirred is input, and a raw material B input port 7 into which the other raw material to be stirred is input. Here, raw material A and raw material B in Example 1 are either a liquid and a liquid, a liquid containing a liquid and a solid, or a liquid containing a solid and a liquid containing a solid, and these raw materials are stirred and emulsified. It forms an emulsion.

Further, a rotating shaft 2 is provided in the direction from the center of the top surface at the top of the tank 1 toward the bottom surface at the bottom. Further, blade-shaped mixers 3 are attached to the rotating shaft 2 horizontally at three locations in the vertical direction. Further, anchor blades 4 that hold scrapers 5 made of resin for scraping liquid with the side surfaces of the tank 1 are rotatably provided at two locations from the top to the bottom.

The rotating shaft 2 is rotationally driven by a motor (not shown) provided outside the tank 1. By rotationally driving the rotating shaft 2, the mixer 3 rotates in the horizontal direction and stirs the raw material in the tank 1. Further, the anchor blade 4 is also rotationally driven in the horizontal direction by another drive source (not shown). The anchor blades 4 can be rotated in the opposite direction to the mixer 3, thereby providing horizontal agitation and allowing the scraper 5 to scrape off liquid on the inner wall of the tank 1.

In the first embodiment, the blade-shaped mixers 3 are provided at three locations in the vertical direction, but the configuration is not necessarily limited to this and may be modified as appropriate. For example, the number of mixers may be two, four or more, and the optimum number of mixers depending on the raw materials to be stirred may be provided. Also. In the first embodiment, the anchor blades 4 are provided at two locations, but the present invention is not necessarily limited to this and may be modified as appropriate. For example, there may be one location, three or more locations, or there may be no locations.

Furthermore, in the first embodiment, the rotary shaft 2, the mixer 3, and the anchor blades 4 are provided, but the present invention is not necessarily limited to this and can be modified as appropriate. For example, it may be configured without a rotating shaft, a mixer, and an anchor blade. In the case of a stirring material with low viscosity, it may be possible to sufficiently refine the material by rotating the rolling case 8 at the bottom of the tank 1.

A rotating case 8 made of stainless steel is provided at the bottom of the tank 1 so as to be rotatable clockwise or counterclockwise. The rolling case 8 has a generally truncated conical shape like an upside-down bowl, and has lower liquid flow holes 852 (852a, 852b, 852c, 952d) on the lower side for sucking in or discharging liquid and emulsion. The upper surface has upper liquid flow holes 811 (811a, 811b, 811c, 811d) for discharging or sucking liquid and emulsion. Further, the disper blades provided in the case disper in Patent Document 1 mentioned above are not provided in the loading case 8 in the first embodiment of the present invention.

In the first embodiment, the loading case 8 has an overall shape that is roughly a truncated cone, like an upside-down bowl, but this is not necessarily limited to this and can be modified as appropriate. For example, it may be roughly cylindrical, roughly rectangular prism-shaped, or roughly polygonal prism-shaped, and any shape can be selected.

The structure of the loading case 8 will be described in detail. The turbine case 81 is approximately truncated cone shaped, and upper liquid flow holes 811 (811a, 811b, 811c, 811d) that discharge or suck liquid are provided through the upper surface. The four upper liquid flow holes 811 (811a, 811b, 811c, 811d) are elliptical, and the elliptical portion has a slight arc shape (see Figure 3 (a)). In addition, the homo stand 85 is screwed into the stand bolt hole 812 (812a, 812b, 812c, 812d) at the lower end of the turbine case 81, and can rotate clockwise or counterclockwise together with the turbine case 81. The homo stand 85 has four lower liquid flow holes 852 (852a, 852b, 852c, 852d) on its side that suck or suck liquid. As a result, the loading case 8 as a whole has lower liquid flow holes 852 (852a, 852b, 852c, 852d) at the bottom that suck in or discharge liquid, and upper liquid flow holes 811 (811a, 811b, 811c, 811d) at the top that suck in or discharge liquid.

In Example 1, the upper liquid flow holes 811 (811a, 811b, 811c, 811d) are oval, and the oval part has a slightly arc shape, and the lower liquid flow holes 852 (852a, 852b, 852c, 952d) have a shape with cut out sides, but the shape is not necessarily limited to this and can be changed as appropriate. For example, a drainage blade or the like may be provided at the opening of the hole in order to efficiently suck the liquid. Moreover, the shape of the opening may be any shape.

In addition, in Example 1, the number of upper liquid flow holes 811 and the number of lower liquid flow holes 852 are four, but this is not necessarily limited to this and can be changed as appropriate. For example, the number may be three or less, or five or more.

As shown in FIG. 3(b), a cavity is provided inside the turbine case 81, and a turbine blade 83 is rotatably housed inside the cavity. The turbine blade 83 is screwed onto a lower shaft 84 and can be rotated clockwise or counterclockwise when viewed from above by a motor (not shown). The turbine blades 83 can cause a liquid flow from bottom to top by rotating counterclockwise when viewed from above, and can cause a liquid flow from top to bottom by rotating clockwise when viewed from above. The blade shape is configured so that it can be raised (see FIG. 4(a) and FIG. 6). That is, in the turbine blade 83, four cutter blades 831 (831a, 831b, 831c, 831d) are provided around the cylindrical part, and the cutter blades 831 (831a, 831b, 831c, 831d) are arranged from above the cylindrical part. It is configured diagonally downward and can efficiently generate a liquid flow from the bottom to the top or from the top to the bottom based on the direction of rotation.

In the first embodiment, the turbine blade 8 is rotatable by the motor clockwise or counterclockwise when viewed from above, but the present invention is not necessarily limited to this and may be modified as appropriate. For example, the turbine blades 8 may not be rotationally driven by a motor, but may be freely rotated by a liquid flow caused by rotation of the loading case 8. Furthermore, the turbine blades 8 may not be provided inside the turbine case 81.

In this way, the loading case 8 can be rotated independently in either clockwise or counterclockwise direction by a drive unit (not shown). Further, the turbine blades 83 can also be rotated independently in either clockwise or counterclockwise direction, but the turbine blades 83 are not rotated by the motor but are rotated freely by the liquid flow caused by the rotation of the loading case 8. It is also possible to do this. As will be described later, it has been found that the emulsion in the tank 1 can be made more fine if the turbine blades 83 are not rotated by a motor but are allowed to rotate freely by the liquid flow caused by the rotation of the loading case 8. .

When the loading case 8 is rotated counterclockwise when viewed from above, as shown in Fig. 7, a swirling flow A is generated, and a suction flow B is generated that causes a liquid flow from the bottom to the top and sucks liquid and emulsion. is sucked into the loading case 8 from the lower liquid flow holes 852 (852a, 852b, 852c, 852d), and the gap l1 between the end of the turbine blade 83 and the inner surface of the turbine case 81 (see FIG. 2(a)). By passing through the gap l2 (see FIG. 2(b)), the emulsion is ground in these gaps l1 and l2 and pushed upward, and discharged from the upper liquid flow holes 811 (811a, 811b, 811c, 811d). C is discharged. In the first embodiment, the gap l1 is set to 1 mm and the gap l2 is set to 0.5 mm, but the gap is not necessarily limited to this and can be changed as appropriate. For example, the gap l1=gap l2=0.5 mm, or the gap l1=0.5 mm and the gap l2=1 mm, or any gap can be set depending on the type of raw material.

In the first embodiment, the loading case 8 is rotated counterclockwise when viewed from above, but the rotation case is not necessarily limited to this and may be changed as appropriate. For example, the liquid may flow from top to bottom by rotating the loading case 8 clockwise when viewed from above. In this case, the liquid or emulsion is sucked into the loading case 8 through the upper liquid flow holes 811 (811a, 811b, 811c, 811d) and discharged from the lower liquid flow holes 852 (852a, 852b, 852c, 852d). .

Alternatively, the loading case 8 may be configured to be rotated clockwise when viewed from above to cause a liquid flow from the bottom to the top, or the loading case 8 may be configured to be rotated counterclockwise when viewed from above to cause the liquid to flow from the bottom to the top. It may be configured to cause a liquid flow from below.

(Stirring method) First, a raw material storage step is performed in which raw materials to be stirred are stored in the tank 1. Next, a loading case rotation process is performed. In the loading case rotation step, the loading case 8 provided at the bottom of the tank 1 is rotated counterclockwise when viewed from above, and a swirling flow A is created around the loading case 8 as shown in FIG. At the same time, a suction flow B is generated that sucks the liquid or emulsion from the lower liquid flow holes 852 (852a, 852b, 852c, 852d) provided on the lower side surface of the loading case 8, and the end of the turbine blade 83 and the inner surface of the turbine case 81 are The emulsion is made fine by passing through the gap l1, and a discharge flow is generated to discharge the fine emulsion and liquid from the upper liquid flow holes 811 (811a, 811b, 811c, 811d) provided in the upper part of the loading case 8. This improves the liquid flow from bottom to top (see Figure 7). At this time, the turbine blades 83 are not rotated by the motor, but are rotated freely by the liquid flow accompanying the rotation of the loading case 8. Thereby, it is possible to generate a swirling flow in the lower part of the tank, improve the upper and lower liquid flows, and make the particle size of the emulsion finer. Note that the same effect can be obtained even if the turbine blade 83 is fixed to the loading case 8.

In addition, in the loading case rotation process in Example 1, the loading case 8 was rotated counterclockwise when viewed from above, but it is not necessarily limited to this, and changes can be made as appropriate. That is, by rotating the loading case 8 clockwise when viewed from above, as shown in FIG. A suction flow B is generated to suck liquid and emulsion from the liquid flow holes 811 (811a, 811b, 811c, 811d), and the liquid and emulsion are passed through the gap 11 and the gap 12 between the end of the turbine blade 83 and the inner surface of the turbine case 81 to become fine, and the A discharge flow C is generated to discharge the fine emulsion and liquid from the lower liquid flow holes 852 (852a, 852b, 852c, 852d) provided on the lower side of the holding case 8, thereby improving the liquid flow from the top to the bottom. It's okay.

Figure 9 shows the particle diameter when both the loading case 8 and the turbine blade 83 are rotated at the same time at 1800 rpm by their respective motors (▼), and when only the loading case 8 is rotated independently at 1800 rpm by the motor and the turbine The test results are shown in which the particle diameter was measured when the blade 83 was rotated freely by the liquid flow (□). The horizontal axis in FIG. 9 indicates stirring time (minutes), and the vertical axis indicates particle diameter (μm). As can be seen from FIG. 9, when only the loading case 8 was rotated independently by the motor, the particle size was smaller and finer even though the rotation speed was the same. It was also found that the particles were further refined by increasing the stirring time.

Figure 10 shows the particle diameter when both the loading case 8 and the turbine blade 83 are rotated at the same time at 3500 rpm by their respective motors (▼), and when only the loading case 8 is rotated independently at 1800 rpm by the motor and the turbine The test results are shown in which the particle diameter was measured when the blade 83 was rotated freely by the liquid flow (□). The horizontal axis shows the stirring time (minutes), and the vertical axis shows the particle diameter (mm). In this case, even though the rotational speed of the turbine case 81 and the turbine blade 83 was approximately twice that of the rotating case 8 alone, the miniaturization ability was almost the same.

As described above, it has been found that the ability to refine the particles is increased when only the loading case 8 is rotated independently and the turbine blades 83 are allowed to freely rotate due to the liquid flow. This is presumed to be because by rotating the loading case 8, a large amount of liquid flow passes through the loading case 8, which improves the effect of the gap l1 between the turbine blade 83 and the inner surface of the turbine case 81. .

As described above, in Example 1, a stirring device is provided that forms an emulsion by stirring and emulsifying liquids and liquids, liquids containing liquids and solids, or liquids containing solids and liquids containing solids as raw materials,
A tank for storing the raw material;
A loading case provided at the bottom of the tank and rotatable in a clockwise or counterclockwise direction,
The loading case has a lower liquid flow hole in the lower part and an upper liquid flow hole in the upper part,
A swirling flow is generated in the lower part of the tank by a stirring device that sucks liquid and emulsion into the loading case from either the lower liquid flow hole or the upper liquid flow hole depending on the rotating direction of the loading case. At the same time, it is possible to improve the upper and lower liquid flows and to make the particle size of the emulsion finer.

Furthermore, in the first embodiment, the configuration includes a turbine blade that is provided inside the loading case and is rotated freely by the liquid flow accompanying the rotation of the loading case, so that the turbine blade is rotated freely by the liquid flow. This allows the agitated material to naturally pass through the narrow space between the inner surface of the rolling case and the turbine blades, generating homogeneous and fine droplets using strong shearing and impact forces. Furthermore, the same effect can be obtained even if the turbine blades are fixed.

Embodiment 2 of the present invention differs from Embodiment 1 in that the loading case is rotated at a predetermined rotation speed, and the turbine blades are rotated at a rotation speed smaller than the rotation speed of the loading case.

Example 2 will be described with reference to FIGS. 11 and 12. FIG. 11 is a third graph showing the test results of the stirring method in Example 2 of the present invention, and (a) shows the rotation case 8 being rotated counterclockwise at 2000 rpm and the turbine blade 83 being rotated at 200 rpm. (b) shows the frequency of the particle size when the rotating case 8 is not rotated and only the turbine blade 83 is rotated counterclockwise at 3500 rpm. Indicates frequency. FIG. 12 is a fourth graph showing the test results of the stirring method in Example 2 of the present invention. (c) shows the frequency of the particle size when rotating counterclockwise at 1400 rpm, and (c) shows the frequency of particle size when rotating case 8 counterclockwise at 1400 rpm and rotating turbine blade 83 counterclockwise at 200 rpm. It shows the frequency of particle size when

(Stirring method in Example 2) In the loading case rotation step in Example 2, the loading case 8 provided at the bottom of the tank 1 is rotated counterclockwise at a predetermined number of rotations when viewed from above, and 7, a swirling flow A is generated around the loading case 8, and the liquid or emulsion is sucked through the lower liquid flow holes 852 (852a, 852b, 852c, 852d) provided on the lower side surface of the loading case 8. A suction flow B is generated, and the turbine blade 83 is rotated counterclockwise by a motor at a rotation speed smaller than the rotation speed of the loading case 8. As a result, the emulsion is made fine by passing through the gap l1 between the end of the turbine blade 83 and the inner surface of the turbine case 81, and is passed through the upper liquid flow holes 811 (811a, 811b, 811c, 811d) provided in the upper part of the loading case 8. A discharge flow is generated to discharge the finely divided emulsion and liquid to improve the liquid flow from the bottom to the top (see Figure 7).

In addition, in the loading case rotation process in Example 2, the loading case 8 was rotated counterclockwise when viewed from above, but it is not necessarily limited to this, and changes can be made as appropriate. That is, by rotating the loading case 8 clockwise at a predetermined rotation speed when viewed from above, a swirling flow A is generated around the loading case 8, as shown in FIG. A suction flow B that sucks liquid and emulsion is generated from upper liquid flow holes 811 (811a, 811b, 811c, 811d) provided at the top, and the turbine blade 83 is clocked by a motor at a rotation speed smaller than the rotation speed of the loading case 8. direction. As a result, the liquid passes through the gaps 11 and 12 between the end of the turbine blade 83 and the inner surface of the turbine case 81 to become fine, and the lower liquid flow holes 852 (852a, 852b, 852c, 852d) provided on the lower side surface of the loading case 8 are ) The liquid flow from top to bottom may be improved by generating a discharge flow C for discharging finely divided emulsion or liquid.

In the second embodiment, the loading case 8 and the turbine blade 83 are rotated in the same direction, but the present invention is not necessarily limited to this and may be modified as appropriate. For example, the loading case 8 and the turbine blade 83 may be rotated in opposite directions.

(Test results in Example 2) In FIG. 11, the horizontal axis shows the particle size, and the vertical axis shows the frequency. FIG. 11(a) shows the frequency of particle sizes 30 minutes after the start of rotation when the loading case 8 is rotated counterclockwise at 2000 rpm and the turbine blade 83 is rotated counterclockwise at 200 rpm. , and (b) shows the frequency of particle sizes 30 minutes after the start of rotation when only the turbine blades 83 were rotated counterclockwise at 3500 rpm without rotating the rolling case 8. In other words, the loading case 8 is rotated at a predetermined rotation speed compared to when only the turbine blade 83 is rotated without rotating the loading case 8, and the rotation speed of the turbine blade 83 is lower than the rotation speed of the loading case 8. It can be seen that the particle size can be made smaller by rotating at a higher rotation speed. Note that there was no significant change in particle size even after rotation for 30 minutes or more.

In FIG. 12, the horizontal axis shows the particle size, and the vertical axis shows the frequency. FIG. 12(a) shows the particle size 30 minutes after the start of rotation when the loading case 8 is rotated counterclockwise at 2000 rpm and the turbine blade 83 is rotated counterclockwise at 200 rpm. (b) shows the frequency of particle size 30 minutes after the start of rotation when the loading case 8 is rotated counterclockwise at 1400 rpm and the turbine blade 83 is rotated counterclockwise at 200 rpm. It shows. As a result, it can be seen that a larger difference between the rotational speed of the loading case 8 and the rotational speed of the turbine blade 83 has the effect of reducing the particle size. Note that there was no significant change in particle size even after rotation for 30 minutes or more.

Although not shown, when the rotating case 8 and turbine blades 83 were rotated clockwise, the frequency of particle sizes decreased as the difference between the rotation speeds of the rotating case 8 and the turbine blades 83 increased.

As described above, in the second embodiment, the loading case is rotated at a predetermined rotation speed, and the turbine blade is rotated at a rotation speed smaller than the rotation speed of the loading case, so that when the turbine blade rotates freely. A similar effect can be obtained, and homogeneous and fine droplets can be generated by strong shearing force or impact force. Further, the larger the difference between the rotational speed of the loading case and the rotational speed of the turbine blade, the finer the particles can be sheared and the particle size can be made finer.

Further, in Example 2, a stirring method is described in which a liquid and a liquid, a liquid containing a liquid and a solid, or a liquid containing a solid and a liquid containing a solid are used as raw materials and are stirred and emulsified to form an emulsion. A step of storing raw materials in a tank; A loading case provided at the bottom of the tank is rotated at a predetermined number of rotations, and liquid and emulsion are supplied to the rotor from a lower liquid flow hole provided at the bottom of the loading case. At the same time as the liquid is sucked into the loading case, a turbine blade provided in the loading case is rotated at a rotation speed smaller than that of the loading case, and liquid is drawn from the upper liquid flow hole provided in the upper part of the loading case. and a rotating case rotation step for discharging the emulsion, the stirring method generates a swirling flow at the bottom of the tank to facilitate suction into the loading case and improves the upper and lower liquid flow, thereby discharging the emulsion. The particle size of the particles can be made finer.

Furthermore, in Example 2, a stirring method is provided in which a liquid and a liquid, a liquid containing a liquid and a solid, or a liquid containing a solid and a liquid containing a solid are used as raw materials and are stirred and emulsified to form an emulsion, comprising: a raw material storage step of storing the liquid and emulsion in a tank; a loading case provided at the bottom of the tank is rotated at a predetermined number of rotations, and the liquid and emulsion are supplied from the upper liquid flow hole provided at the top of the loading case; At the same time as suction into the loading case, the turbine blades provided in the loading case are rotated at a rotation speed smaller than the rotation speed of the loading case, and the liquid flows from the lower liquid flow hole provided in the lower part of the loading case. and a rotating case rotation step for discharging the emulsion, the stirring method generates a swirling flow at the bottom of the tank to facilitate suction into the loading case and improves the upper and lower liquid flow, thereby discharging the emulsion. The particle size of the particles can be made finer.

The stirring device of the present invention can be widely applied to the field of stirring and emulsifying a liquid as a raw material to form an emulsion.

1: Tank 2: Rotating shaft 3: Mixer 4: Anchor blade 5: Scraper 6: Raw material A inlet 7: Raw material B inlet 8: Rotating case 9: Cleaning valve port 81: Turbine case 83: Turbine blade 84: Lower shaft 85: Homo stand 811 (811a, 811b, 811c, 811d): Upper liquid flow hole 812 (812a, 812b, 812c, 812d): Bolt hole for stand 831 (831a, 831b, 831c, 831d): Water cutter blade 851 (851a, 851b, 851c, 851d): Bolt hole for disperser 852 (852a, 852b, 852c, 852d): Lower liquid flow hole A: Swirling flow B: Suction flow C: Discharge flow

Claims (5)

A stirring device that stirs and emulsifies liquids and liquids, liquids containing liquids and solids, or liquids containing solids and liquids containing solids as raw materials to form an emulsion,
A tank for storing the raw material;
A loading case provided at the bottom of the tank and rotatable in a clockwise or counterclockwise direction,
The loading case has a lower liquid flow hole in the lower part and an upper liquid flow hole in the upper part,
A stirring device characterized in that liquid and emulsion are sucked into the loading case from either the lower liquid flow hole or the upper liquid flow hole depending on the rotating direction of the loading case. The stirring device according to claim 1, further comprising a turbine blade provided inside the loading case and freely rotated by a liquid flow accompanying rotation of the loading case. The stirring device according to claim 1, wherein the loading case is rotated at a predetermined rotation speed, and the turbine blade is rotated at a rotation speed smaller than the rotation speed of the loading case. A stirring method for forming an emulsion by stirring and emulsifying a mixture of liquids, a liquid and a liquid containing a solid, or a liquid containing a solid and a liquid containing a solid, the method comprising the steps of:
a raw material storage step of storing the raw material in a tank;
a rotating case rotation step of rotating a rotating case provided at the bottom of the tank at a predetermined rotation speed, sucking liquid and emulsion into the rotating case through a lower liquid flow hole provided at the lower part of the rotating case, and rotating turbine blades provided in the rotating case at a rotation speed slower than the rotation speed of the rotating case, thereby discharging the liquid and emulsion from an upper liquid flow hole provided at the upper part of the rotating case. A stirring method for forming an emulsion by stirring and emulsifying liquids and liquids, liquids containing liquids and solids, or liquids containing solids and liquids containing solids as raw materials, the method comprising:
a raw material storage step of storing the raw material in a tank;
The loading case provided at the bottom of the tank is rotated at a predetermined rotation speed, and the liquid and emulsion are sucked into the loading case through the upper liquid flow hole provided at the top of the loading case, and the rotor is a loading case rotation step in which a turbine blade provided in the loading case is rotated at a rotational speed lower than the rotational speed of the loading case, and liquid and emulsion are discharged from a lower liquid flow hole provided in a lower part of the loading case; A stirring method characterized by comprising the following.

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