JPH0751557A - Agitating mixer - Google Patents

Abstract

PURPOSE:To improve the agitation and mixing efficiency of a vibration mixer by installing the spiral blade of an agitator through a spacer part without spiral blade. CONSTITUTION:A casing 10 is made in a cylindrical shape, and a passage 12 for fluid is installed inside it. The upper and lower ends of the passage is opened, and a settler is attached to each end. In the casing 10, an agitator 34 which is vibrated vertically by driving a vibration source, is inserted. When a mixer of this type is operated concurrentwise, two or more kinds of fluids to be mixed are fed together into the casing 10 from the upper or lower opening. On the other hand, when the mixer is operated countercurrentwise, the fluids to be mixed are fed separately from upper and lower openings. The agitator 34 is vibrated vertically while the fluids to be mixed are being fed, so that the fluids are mixed in the passage 12. The agitator 34 is composed of two or more agitator elements 40 which are formed from a shaft 36 and a spiral blade 38 fixed around the shaft 36, and a spacer part 60 is installed between the agitator elements 40 by using a spacer packing 48 for the improvement of the agitation efficiency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stirring and mixing apparatus for stirring and mixing a plurality of fluids, and more particularly to a stirring and mixing apparatus for stirring and mixing fluids while circulating the fluids.

[0002]

2. Description of the Related Art There are various types of devices for stirring and mixing liquids that do not mix with each other. Among these, a vibro mixer (VIBRO MIXER; trade name, for example, Japanese Patent Publication No. 2-15247, JP-A No. 2-293035).
(Japanese Patent Laid-Open Publication) is widely used because a desired emulsion can be quickly obtained. The vibro mixer (trade name) includes a stirring body including a drive shaft and spiral blades attached to the drive shaft. When stirring and mixing are performed, the stirring body vibrates, and the turbulent flow generated by this vibration promotes the mixing of the fluids.

The vibromixer (trade name) is used as an agitator for an apparatus for producing an emulsion, for adjusting pH, for a chemical reaction such as redox reaction, or for an extractor. In addition, with the development of biotechnology in recent years,
It has also come to be used for stirring and mixing treatment in the field of biochemistry such as microbial culture.

[0004]

There is a need for agitation and mixing treatment and its application range is expanding, and it is generally necessary to improve agitation efficiency or mixing efficiency in an agitation mixing apparatus. Therefore, the vibromixer (trade name) also needs to further improve the stirring efficiency or the mixing efficiency in order to meet the demands of the industry.

Therefore, an object of the present invention is to improve the stirring efficiency and mixing efficiency of the vibromixer (trade name).

[0006]

In order to achieve the above object, a stirring and mixing apparatus according to claim 1 of the present application is provided with a casing provided with a flow passage through which a fluid is circulated, and arranged in this casing. An agitator / mixer including a stirrer including a shaft connected to a vibration source and a spiral blade attached to the periphery of the shaft, wherein the spiral blade of the stirrer is a spacer without a spiral blade. It is characterized in that it is attached via a section.

A stirring and mixing apparatus according to a second aspect of the present invention is the stirring and mixing apparatus according to the first aspect, wherein the spiral blade of the stirring member has an opening for allowing a fluid to flow therethrough.

A stirring and mixing apparatus according to a third aspect of the present invention is the first aspect.
The agitating and mixing apparatus as described above is characterized in that it is a partition plate having a circulation hole for allowing a fluid to circulate, the partition plate being arranged so as to include at least one spacer portion between the partition plates.

The stirring and mixing apparatus according to a fourth aspect is the first aspect.
Alternatively, the stirring / mixing device described in 2 or 3 is further characterized in that the casing is further provided with a separating unit at an upper portion and / or a lower portion thereof, for storing the fluid that has been stirred and mixed and separating the fluids.

A stirring and mixing apparatus according to a fifth aspect of the present invention is the fourth aspect.
The agitating and mixing apparatus described above is characterized by comprising means for controlling the temperature of the flow passage.

[0011]

The stirring / mixing apparatus according to the present invention has the above-mentioned structure, and the fluid to be mixed, which is a mixture of two or more kinds of fluids, is circulated in the casing by pumping or the like. Then, when the agitator vibrates in this casing,
The fluid collides with the spiral blade and is agitated and mixed. When the partition plate is provided, the fluid to be mixed collides not only with the spiral blade but also with the partition plate and is stirred and mixed. When the spiral blade is provided with an opening, a part of the fluid circulates there to generate a turbulent flow, and the stirring efficiency is increased.

In this case, if the stirring member is provided with the spacer portion, stirring efficiency and mixing efficiency are improved.
It is not clear that the existence of this spacer improves the stirring efficiency, etc., but because a turbulent flow of a different type from that of the stirring blade occurs in this spacer part, or because the fluid does not flow in the spacer part. It is considered that this is because they are accumulated and equilibrium occurs.

When the stirring / mixing device of the present invention is used as a stirring / mixing device for a reaction device or an extraction device, the most remarkable effect is exhibited. For example, when it is used in an extraction device, the fluid stays in the spacer portion where a unique turbulent flow is generated, distribution equilibrium occurs, and the extraction operation can be performed efficiently. That is, the contact area between the fluids is expanded by the turbulent flow of the fluid in the spacer portion,
At the same time, since the solute transfer time can be secured by the retention of the fluid in the spacer portion, the extraction efficiency can be improved. On the other hand, when used in a reactor, the reaction efficiency is improved by expanding the contact area due to turbulent flow in the spacer portion and ensuring the reaction time due to the retention of the fluid in the spacer portion.

Further, when the partition plate is provided, since the fluid flows through the flow hole of the partition plate, the flow speed of the fluid is limited. Then, since the stirring body is vertically vibrated in this state, a sufficient stirring and mixing effect can be obtained by bringing the fluid into contact with the vibrating stirring body.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the stirring and mixing apparatus according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the functional arrangement when the stirring and mixing apparatus according to the preferred embodiment of the present invention is applied to an extraction apparatus. This extraction device includes a casing A in which a fluid flows, an agitator B inserted inside the casing, a vibrator C connected to the agitator, and a mixed fluid installed above and below the casing. It includes a settler D to be separated and a jacket E through which hot water or the like is passed to adjust the temperature inside the casing.

First Embodiment FIG. 2 is a sectional view of a portion of the casing A, showing the configuration of the first embodiment of the present invention. As shown in the drawing, the casing 10 of the present embodiment for mixing two or more kinds of fluids is formed in a cylindrical shape, and a flow passage 12 for allowing the fluid to flow therein is provided therein, and the flow passage 12 is opened in the vertical direction. As shown in FIG. 1, a settler is attached to each of the openings. On the other hand, the stirring body 34 is inserted and arranged inside the casing 10. This stirrer 3
4 vibrates up and down by driving a vibration source (vibrator).

In the agitating and mixing apparatus according to the first embodiment as described above, in the case of the parallel flow type, two or more kinds of fluids to be mixed are simultaneously supplied to the casing 10 from above or below.
Be distributed within. On the other hand, in the case of the counterflow method, the fluids to be mixed are circulated in the casing 10 from above and below. Then, the agitator 3 in a state where the fluid to be mixed is circulated
4 vibrates up and down, and stirring and mixing are performed in the flow passage 12. In addition, in FIG. 1, a countercurrent type is adopted, and a light liquid flows from the lower direction and a heavy liquid flows from the upper direction.

Here, the agitator 34 is composed of a shaft portion 36 and a plurality of agitator elements 40 having spiral blades 38 attached to the periphery thereof. A feature of this embodiment is that the spacer packing 48 is used to provide the spacer portion 60 between the stirring element 40 having the spiral blade 38.

FIG. 3 is a detailed front view of the stirring body 34. As shown, the spiral blade 38 has an opening 38
a is formed by shifting the vertical position. This is to prevent the occurrence of a short-circuit flow in the axial direction and improve the stirring effect. The stirrer element 40 is formed, for example, by forming an opening 38a at a predetermined position of a donut-shaped disc having an opening corresponding to a short cylinder 42 fitted to the outside of the shaft portion 36 in the central portion, and then part of the disc. The spiral blade 38 can be formed by cutting in the radial direction, shifting the cut end in the direction perpendicular to the disk surface, and fixing it to the short cylinder 42 by welding or the like. Other than this, as the material of the stirring element 40, plastic, ceramic, or the like can be used.

FIG. 4 is an assembly diagram of the agitator 34. As shown in the drawing, a flange portion 44 is fixed to the lower end of the shaft portion 36 with a screw 46. Then, the spacer packing 48 and the stirrer element 40 are sequentially inserted and laminated on the shaft packing 36. Further, the packing 50 is sandwiched between the agitator elements 40. The stirrer element 40 and the like laminated in this manner have the screw portion 52 on the upper end of the shaft portion 36.
May be provided, and a cap nut may be screwed onto this to be caulked and fixed to the collar portion 44. The stirring body 34 thus formed can form the stirring body 34 in which the stirring blades 38 are formed at desired intervals.

Next, the operation of this embodiment will be described.

When the agitator 34 vibrates up and down, the fluid to be mixed collides with the agitating blades 38 in the casing 10, and a new interface is gradually formed. Since the present embodiment is a countercurrent type extraction device, the organic phase and the aqueous phase are separately injected from above and below. For example, in this embodiment, an aqueous metal solution is injected from above the extractor, and an organic solvent that is an extraction solvent is injected from below. A chelating agent is added to the organic solvent, and when stirring and mixing is performed by a stirring and mixing device, the metal in the aqueous metal solution forms a chelate and dissolves in the organic solvent. The deficient aqueous solution is supplemented at any time, and the excess solution is removed.

Since the spacer portion 60 is provided in this embodiment, the extraction efficiency is remarkably improved as compared with the case where the spacer portion 60 is not provided. Thus, the extraction efficiency is improved because a turbulent flow is generated in the spacer portion 60 to increase the contact area between the fluids, and at the same time, the fluid is retained in the spacer portion 60 and distribution equilibrium is likely to occur. It is thought that it is because it has become. The extracted fluid is separated and stored in the settler. In this example, the aqueous phase is stored as a heavy liquid in the lower settler, and the organic phase is stored as a light liquid in the upper settler. The extract is removed from the settler and subjected to the next treatment.

The extraction machine and the back extraction machine can be integrally formed by combining such extraction devices. In such a case, the extracted organic phase of the extractor is withdrawn from above the extractor and injected into the back extractor from below. On the other hand, the aqueous solution for back extraction is injected from above the back extractor. The pH of the aqueous solution for back extraction is adjusted so that the metal chelate is destroyed, and when the stirring / mixing device of the back extractor operates, the metal chelate is destroyed and the metal ions are back extracted into the aqueous phase. . The back-extracted aqueous phase is removed from below the back-extractor. On the other hand, the organic solvent after the back extraction is recovered from above the back extractor and reused.

Second Embodiment FIG. 5 is a sectional view showing the structure of the second embodiment of the present invention.
As shown in the figure, in the second embodiment, the partition plate 20 is provided for each of the plurality of stirring element 40. That is, in the second embodiment, the casing 10 is provided with the partition plate 20, and the partition plate 20 and the partition plate 20 are provided.
At least one spacer portion 60 is always present between them. In the embodiment, the casing 10 includes a plurality of cylindrical pipes 18 and each pipe 18
The partition plates 20 to be interposed between the joints are alternately stacked and formed in multiple stages.

As shown in the figure, a cylindrical pipe 18
The upper and lower circumferential end surfaces of the packing 2 are securely connected to the partition plate 20 to prevent fluid leakage (airtightness and watertightness).
2 has been given. In the embodiment, the packing 22 is made of Teflon (trade name) and the partition plate 20 is made of plastic. A disc-shaped partition plate 20 (shown by sand in the figure) configured to be fittable is sandwiched between joints connecting the pipes 18 so that the inner diameter of the peripheral edge is substantially the same as the outer diameter of the pipes 18. . In addition, as described above, the casing 10 configured in multiple stages with the pipe 18 and the partition plate 20 has a fixture 32 having a shaft 28 and a nut 30 at the upper and lower ends thereof.
And crimp together to fix. This fixture 32 is shown in FIG.
Although only one is shown in the figure, it is similarly fixed at three locations around the casing 10.

In the mixing apparatus according to the second embodiment, the fluid to be mixed collides with the agitator 34 and the partition plate 20 and is agitated and mixed. In addition, the distribution hole 2 of the partition plate 20
Since the fluid is circulated through 6, the fluid circulation speed is limited. Since the stirring body 34 is vertically vibrated in this state, a sufficient stirring and mixing effect can be obtained by bringing the fluid into contact with the vibrating stirring body 34. Further, in the mixing apparatus according to the second embodiment, the spacer portion 60 is provided between the partition plates 20, so that the stirring and mixing efficiency is improved for the same reason as in the first embodiment.

The apparatus of this embodiment can be used not only for extraction operation but also for emulsion formation by appropriately adjusting the vibration of the stirring member 34. Further, when a reaction substrate is added to the solution, it constitutes a reaction device. Furthermore, the fluid to be mixed is not only liquid but also gas,
It may be a granule or a powder.

As described above, in the stirring and mixing apparatus according to this embodiment, since the spacer portion 60 is provided between the stirring element 40, the stirring efficiency and the mixing efficiency are improved. The effect of this improvement becomes most remarkable when the stirring and mixing apparatus of the present embodiment is used as the stirring and mixing apparatus of the reaction apparatus or the extraction apparatus.

[0031]

As described above, the stirring and mixing apparatus of the present invention can improve the stirring and mixing efficiency only by setting a predetermined spacer portion on the spiral blade in the vibromixer (trade name). The efficiency of the applied extraction device and reaction device can be improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a functional configuration when a stirring and mixing device according to a preferred embodiment of the present invention is applied to an extraction device.

FIG. 2 is a sectional view showing a configuration of a first embodiment of the present invention.

FIG. 3 is a front view of an agitator according to the present embodiment.

FIG. 4 is an assembly configuration diagram of a stirring body according to the present embodiment.

FIG. 5 is a sectional view showing a configuration of a second embodiment of the present invention.

[Explanation of symbols]

 10 Casing 12 Flow Path 18 Pipe 20 Partition Plate 26 Flow Hole 34 Stirrer 40 Stirrer Element 60 Spacer Part

Claims (5)

[Claims] 1. A casing having a flow passage in which a fluid is circulated, a shaft portion arranged in the casing and connected to a vibration source, and a spiral blade mounted around the shaft portion. An agitating / mixing apparatus including the agitating body, wherein the spiral blade of the agitating body is attached via a spacer portion having no spiral blade. 2. The stirring / mixing apparatus according to claim 1, wherein the spiral blade of the stirring body has an opening for allowing a fluid to flow therethrough. 3. The stirring / mixing device according to claim 1, wherein the partition plates have circulation holes for allowing a fluid to flow therethrough, and the partition plates are arranged so that at least one spacer portion is included between the partition plates. A stirring and mixing device comprising: 4. The agitating and mixing apparatus according to claim 1, 2 or 3, further comprising a separating section at an upper part and / or a lower part of the casing for storing the agitated and mixed fluid and separating the fluids. A stirring and mixing apparatus characterized by the above. 5. The stirring / mixing device according to claim 4, further comprising means for controlling the temperature of the flow passage.