JPH10244140A - High-quality emulsion and production of emulsion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use an improved partitioned agitation type mixing device to produce a high-quality emulsion. SOLUTION: A partitioned agitation type mixing device produces an emulsion with improved agitation efficiency by staggering punched hole positions in both discs 13 and partition 14 from each other. And in the partitioned agitation type mixing device with divided stages, tapers 21 are provided at the peripheral parts of the discs 13b of a vibration body 13. Since fluid is introduced in such a way that it goes against a natural flow produced in the mixing device by providing the tapers 21, the size of dispersed particles is uniformalized to improve the quality of an emulsion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a method for producing a good quality emulsion and a good quality emulsion.

[0002]

2. Description of the Related Art As an apparatus for producing an emulsion by stirring and mixing fluids, there is an apparatus as shown in FIG. The stirrer 1 is provided in the casing 11 of this device.
The stirring member 13 includes a drive shaft 13a and a disk 13b attached to the drive shaft 13a. The joint member 14 is mounted in the casing 11 so as to be inserted between the disks 13b. The disc 13b is generally provided with a through hole 13c.

[0003] This type of mixing apparatus performs stirring and mixing by vibrating the stirrer 13 up and down, and is characterized in that the discs 13b are made independent of each other by joint members 14. In this specification,
For the sake of convenience, this type of mixing device will be referred to as a partition-stirring type mixing device). In such a partition-stirring type mixing apparatus, the mixing is naturally performed by the vertical vibration of the disk 13 b, but the space 15 between the node member 14 and the drive shaft 13 a is changed by the vertical vibration of the stirring body 13. Is also mixed.

[0004]

However, in the case of the above-described partitioning and stirring type mixing apparatus according to the prior art, when the stirrer 13 vibrates, an extra flow is generated in the space 16 between the casing 11 and the disk 13b. In some cases, sufficient stirring and mixing could not be performed.

The present invention has been made in view of the above problems, and an object of the present invention is to use a partition-stirring type mixing apparatus which has been improved so as not to generate an extra flow from around a disk. It is to produce a high-quality emulsion.

[0006]

Means for Solving the Problems In order to solve the above problems, in a mixing device according to claim 1 of the present application, a cylindrical casing, a vibrating body disposed inside the casing, and In the mixing device, wherein the vibrating body performs mixing by vibrating relative to the casing in the casing, the vibrating body includes a drive shaft and a disk member attached to the drive shaft. A joint member is provided in the casing and extends between the disc members. The disc member and the joint member have a plurality of through holes penetrating the disc member or the joint member. Further, the through hole of the disk member and the through hole of the joint member are provided at positions not overlapping with each other.

In order to provide the through-hole of the disk member and the through-hole of the joint member so as not to overlap with each other, the through-hole of the joint member is disposed on the inner edge side, and It is preferable that the through holes are arranged on the outer edge side so that they do not overlap with each other.

According to the mixing device of the present invention having the above-described configuration, when the vibrating body vibrates, the disc member and the node member approach or move away from each other.
The fluid passes through the through holes provided in these, and mixing is performed when the fluid passes through the through holes. In this case, in the mixing device according to the present invention, since the through hole of the disc member and the through hole of the node member are provided at positions where they do not overlap with each other, the fluid flow path in the casing becomes complicated. In addition, favorable conditions will be provided in the production of the emulsion. That is, the mixing force is increased due to the complexity of the fluid flow path in the casing, and the dispersed phase of the emulsion is further miniaturized.
Therefore, the emulsion produced by the mixing apparatus according to the present invention has a finer dispersed phase as compared with the emulsion not provided at a position where the two through-holes do not overlap each other. Further, as the disperse phase becomes finer, the particle size of the dispersed phase particles dispersed in the continuous phase becomes uniform.

[0009] The mixing device according to the present invention is further characterized in that a taper in the same direction is provided on a peripheral portion of the disk member.

In the case where the taper is provided, when the disk member moves in the direction in which the taper is opened, an excessive flow of fluid from around the disk member is strongly prevented. That is, if the peripheral edge of the disk member is provided with a taper, when the disk member moves in the direction in which the taper opens, no extra flow from around the disk member occurs, and accordingly, Therefore, the flow of the fluid is concentrated on the plurality of through holes provided in the disk member. Therefore, when the vibrating body vibrates, a larger amount of fluid passes through the through-hole than when no taper is provided, and an improvement in stirring efficiency can be expected.

Also, by providing the taper, a natural fluid flow occurs in the mixing device.
When the fluid is introduced in a direction opposite to the direction of the flow, the particle size distribution can be reduced, and it can be expected that a higher quality emulsion can be obtained than when the direction is not reversed.

[0012] The emulsion obtained by the above apparatus and the method of obtaining an emulsion using the above apparatus are all included in the scope of the present invention. Further, all derivatives of this emulsion, that is, all fine particles obtained by processing this emulsion are also included in the scope of the present invention. The substance constituting the emulsion may be any substance. That is, not only emulsions composed of ordinary water and oil (mineral oils such as paraffin-based oils, edible oils such as animal fats and vegetable fats and the like) but also biological substances such as emulsions having silicone-based dispersed phases and proteins. Emulsions having a dispersed phase are also included.

[0013] Such fine particles include, for example,
Examples include toner for printing and column carriers. These processing methods include all processing methods commonly used by those skilled in the art, such as polymerization, separation and drying of particles. In addition to edible, medical, and cosmetic emulsions, of course,
It can also be used for the production of pigments and paints.

As a method for producing a toner, for example,
No. 179552 (Japanese Patent Application No. 6-335146). That is, in order to produce a toner, a dispersion phase formed by adding an additive such as a colorant and a charge control agent to a monomer is converted into an aqueous phase containing a dispersion stabilizer (continuous phase). Granulation is carried out by dispersing it inside. And set this to a predetermined temperature to start the polymerization reaction,
After the completion of the reaction, the generated toner particles are washed and then subjected to solid-liquid separation by filtration or centrifugation. The obtained toner particles are collected and dried. In this process, when the toner particles to be granulated are manufactured via the emulsion according to the present invention, in addition to the appropriate size of the particles, the particle size of the dispersed phase particles of the emulsion is uniform. And the yield of granulation is increased. Further, when the particle size of the dispersed phase particles of the emulsion is uniform, the particles can be washed relatively easily, and the labor for solid-liquid separation can be reduced. Furthermore, ordinary emulsions contain a considerable amount of extremely small particles, which may pass through the recovery device, so that post-treatment may be very difficult, but as in the emulsion according to the present invention, If the particle size of the dispersed phase particles is uniform, such a phenomenon does not occur, which can contribute to environmental problems.

[0015]

FIG. 1 and FIG. 2 are views showing a first embodiment of the present invention. Here, FIG. 1 is a longitudinal sectional view of the partitioning and stirring type mixing apparatus according to the embodiment, and FIG.
2A is a cross-sectional view taken along line AA of FIG. 1, and FIG.
It is B sectional drawing. The same components as those in the related art are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 1, the mixing apparatus according to the present invention has a structure in which a disc 13b is mounted on a drive shaft 13a and inserted between the discs 13b, as in the conventional example. A joint member 14 is mounted in the casing 11. An interval 15 is formed between the joint member 14 and the drive shaft 13a.

However, in the mixing apparatus according to the present embodiment, unlike the conventional apparatus, a through hole 13c penetrating through the disc 13b is provided on the outer edge side of the disc 13b (FIG. 2).
(A)), the through-hole 14 c penetrating the joint member 14 is inserted into the disc 1.
3B (FIG. 2 (B)).
Through hole 13c of disc 13b and through hole 14c of joint member 14
Are provided at positions where they do not overlap with each other (claim 2). In such an embodiment, the through holes 13c and the through holes 14
c, there is no overlap, and when the fluid passes through the through-hole 13c after passing through the through-hole 13c, its flow path is bent. When this is compared with the case where the two through-holes overlap and the flow path of the fluid is straight, a complicated force is applied to the fluid as much as the flow path is bent, so that the environment for producing an emulsion becomes favorable. . The positional relationship between the through-holes 13c and the through-holes 14c is not limited to a relationship in which one is on the outer edge side and the other is on the inner edge side, and any positional relationship may be adopted as long as the two through-holes do not overlap. Good.

Incidentally, in the mixing apparatus according to the present invention, the taper 21 is provided at the peripheral portion of the disk 13b (the taper 21 may or may not have a round shape). When the taper 21 is provided on the disk 13b in this way, no extra flow is generated around the disk 13b, and the stirring and mixing can be performed more effectively. Here, the extra flow from the interval 15 is
Is strongly prevented when it moves in the direction of (a) (that is, the direction in which the taper 21 is open), and a strong flow can be generated in the through hole 13c and the interval 16 by that much. If a strong flow can be generated in this part, the mixing efficiency can be improved thereby.
For example, assuming that water and oil are charged, the interval 15
By increasing the amount passing through the through-hole 13c to increase the flow rate and the contact area with each other without causing an extra flow from the air, mixing thereof can be promoted.

In the present invention, the provision of the taper 21 causes a pumping action in the mixing device. That is, as shown in FIG. 3, when the vibrating body 13 is driven up and down, the fluid is naturally pushed downward.

As described above, in the present invention, by providing the taper 21, a natural fluid flow occurs in the mixing device due to the vibration of the vibrating body 13 (FIG. 3). When a fluid having a direction opposite to the flow direction of the fluid in the mixing device generated by the vibration of 13 is introduced into the mixing device, the size distribution of the particles can be reduced, and when the direction is not reversed. A better quality emulsion can be obtained. That is, the taper 21 is added to the mixing device.
By introducing a fluid in such a way as to oppose the flow which naturally occurs by providing the above, it becomes possible to narrow the particle size distribution and produce an emulsion containing particles of uniform size. In this embodiment, such a fluid is introduced by the fluid introducing device 27.

The embodiment of the mixing apparatus according to the present invention has been described above.
What is necessary is just to be relative to. That is, in this embodiment, the vibrating body vibrates in both devices, but the casing side may vibrate as seen in, for example, US Pat. No. 3,174,622.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a mixing device according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1 (FIG. 2A) and FIG.
FIG. 2B is a sectional view taken along line BB (FIG. 2B).

FIG. 3 is a diagram for explaining a natural flow of a fluid in the mixing device caused by driving the mixing device according to the present invention.

FIG. 4 is a block diagram showing a functional configuration of a conventional partition-type stirring / mixing apparatus.

[Explanation of symbols]

 Reference Signs List 11 casing 13 vibrating body 13a shaft 13b disk 13c, 14c through hole 14 joint member 21 taper 27 fluid introduction device

Claims (8)

[Claims] 1. A mixing device comprising: a cylindrical casing; and a vibrating body disposed inside the casing, wherein the vibrating body vibrates relative to the casing in the casing to perform mixing. The device, wherein the vibrating body includes a drive shaft and a disk member attached to the drive shaft, and a joint member is provided in the casing, which extends between the disk members. The member and the joint member have a plurality of through holes penetrating the disk member or the joint member, and the through hole of the disk member and the joint hole of the joint member are provided at positions not overlapping with each other. An emulsion produced by a mixing device. 2. The position where the through-holes of the joint member of the mixing device according to claim 1 are arranged on the inner edge side and the through-holes of the disc member are arranged on the outer edge side, so that they do not overlap each other. An emulsion manufactured by a mixing device, characterized in that the emulsion is prepared as follows. 3. The emulsion manufactured by the mixing device according to claim 1, wherein the taper in the same direction is provided on a peripheral portion of the disk member in the mixing device according to claim 1 or 2. 4. A mixing device according to claim 2 or 3, wherein a fluid introduction device for introducing a fluid having a direction opposite to a flow direction of the fluid in the mixing device, which is generated by the vibration of the vibrator, is introduced into the mixing device. An emulsion produced by a mixing device, comprising: 5. Fine particles produced by processing the emulsion according to any one of claims 1 to 4. 6. A mixing device comprising: a cylindrical casing; and a vibrator disposed inside the casing, wherein the vibrator includes a drive shaft, a disk member attached to the drive shaft, A joint member is provided in the casing, the joint member extending between the disc members, and the disc member and the joint member have a plurality of through holes penetrating the disc member or the joint member. And, in the mixing device, the through-hole of the disc member and the through-hole of the node member are provided at positions that do not overlap with each other. A method for producing an emulsion by mixing two or more fluids by relatively vibrating them. 7. The mixing device according to claim 6, wherein the peripheral portion of the disk member is provided with a taper in the same direction, and two or more fluids are mixed by the mixing device. A method for producing an emulsion by the method. 8. The mixing device according to claim 7, wherein two or more types of fluids are introduced into the mixing device by introducing a fluid having a direction opposite to a flow direction of the fluid in the mixing device caused by the vibration of the vibrating body. A method for producing an emulsion by mixing fluids.