JPH09239253A - Dispersing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dispersing apparatus of a magnetic dispersion capable of judging the state in a vessel inner cylinder at its early stage, simple in constitution and capable of being reduced in cost. SOLUTION: This dispersing apparatus is constituted so that a vessel inner cylinder 51 is arranged inside a vessel jacket 52 and a stirring agitator shaft 22 is arranged inside the vessel inner cylinder 51 in a freely rotatable manner and a temp. control liquid is introduced into the gap between the vessel jacket 52 and the vessel inner cylinder 51 to adjust the temp. of the magnetic dispersion supplied into the gap between the vessel inner cylinder 51 and the agitator shaft 22 to perform dispersing treatment. In this case, the gap is divided into a plurality of temp. control chambers 54a-54h by the axial partition plates 53a-53h radially extending from the outer peripheral surface of the vessel inner cylinder 51 and directly connecting the vessel inner cylinder 51 to the vessel jacket 52, and the holes 57 allowing the temp. control chambers 54a-54h to communicate with each other are provided to the partition plates 53b-53h.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a dispersion device,
More specifically, the outer peripheral surface of the agitator shaft and the inner peripheral surface of the inner vessel of the vessel have stirring pins, etc., and the liquid to be dispersed supplied to the space between the inner vessel of the vessel and the agitator shaft is dispersed by applying shearing force. In particular, the present invention relates to a dispersing device suitable for stirring magnetic dispersion liquids.

[0002]

2. Description of the Related Art Conventionally, some industrial fields require processes such as dispersion of liquid and dispersion / kneading of liquid and powder. One of them is magnetic dispersion. For example, as shown in FIG. 6 (transverse cross-sectional view of the dispersion portion), the dispersion storage for dispersing the magnetic dispersion liquid is a vessel inner cylinder to which an agitator shaft 22 (rotor) in which a large number of stirring pins 24 are implanted is appropriately fixed. A vessel jacket 52, which is an outer casing, is disposed on the outer peripheral side of the vessel inner cylinder 51 so as to be rotatable in the central portion of 51 (fixed container). Agitating pins 24 and 80 are arranged on the outside of the agitator shaft 22 and the inside of the vessel inner cylinder 51 so as to face each other at an appropriate interval. A liquid to be dispersed such as a dispersion liquid is supplied and appropriately dispersed. Further, as described above, the vessel jacket 52 is arranged outside the vessel inner cylinder 51 with a predetermined gap from the vessel inner cylinder, and in the gap between the vessel jacket 52 and the vessel inner cylinder 51, for example, The structure is such that the temperature can be adjusted through cooling water.

In this temperature control structure, for example, a partition wall 101 extending substantially cylindrically from the outer surface of the vessel inner cylinder 51 at a predetermined interval and a space between the partition wall 101 and the vessel inner cylinder 51 are provided in the agitator shaft 22. A partition plate extending along the axial direction and provided with a large number of small chambers 90a to 90k.
Then, between the outside of the small chambers 90a to 90k and the vessel jacket 52, one outermost peripheral space 91 is formed over the entire inner circumference of the vessel jacket. These small chambers 90a to 90k and the outermost peripheral space 91 form a continuous flow path with appropriately formed communication holes.
That is, for example, the cooling water is introduced into the predetermined small chamber 90a through the entrance
5, the cooling water sequentially flows into the next small chamber 90b ... And is discharged from the last small chamber 90k to the outermost peripheral space 91, and further from this outermost peripheral space 91 to the outside of the vessel jacket 52 from the outlet 56. It has a structure to be discharged.

In such a conventional dispersing device, the magnetic dispersion liquid is supplied between the agitator shaft 22 and the vessel inner cylinder 51, and the magnetic dispersion liquid rotates and the stirring pin 24 and the vessel inner cylinder of the agitator shaft 22 are rotated. 51
By stirring with the stirring pin 80, the shearing force is applied and dispersed. The heat generated at this time is cooled by the cooling water flowing through the outer periphery of the vessel inner cylinder 51 and the cooling water flowing inside the agitator shaft 22, and the temperature is adjusted appropriately.

[0005]

However, in the conventional dispersing device, the small chambers 90a to 90k and the outermost peripheral space 91 are formed between the vessel inner cylinder 51 and the vessel jacket 52 as described above. Since the cooling water flow path can be lengthened and the cooling water can be effectively used, the structure becomes extremely complicated. Further, it seems that it is easy to determine the internal condition of the inner vessel of the vessel by measuring the temperature of the outer peripheral surface of the vessel jacket 52. However, in the conventional structure, the outermost space from the outside of the vessel jacket 52 is substantially the outermost space. Since only the temperature of 91 can be measured, it is difficult to judge the internal condition of the vessel inner cylinder 51. Therefore, internal problems will be recognized only after some abnormality is found in the discharged magnetic dispersion liquid after the dispersion process is completed, and there is a problem that a quick response at the time of trouble cannot be taken and the countermeasures are delayed. there were. An object of the present invention is to solve the above problems, and it is an object of the present invention to provide a dispersion device capable of determining the internal condition of the inner vessel of a vessel at an early stage, and having a simple structure and cost reduction. .

[0006]

The above object of the present invention is to dispose a vessel inner cylinder with a predetermined gap inside a vessel jacket, and an agitator shaft for stirring is rotatably provided inside the vessel inner cylinder. The temperature control liquid is placed in at least the gap between the vessel jacket and the vessel inner cylinder to adjust the temperature of the liquid to be dispersed supplied between the vessel inner cylinder and the agitator shaft. In the dispersion device configured as described above, the gap is formed by a partition plate that extends radially from the outer peripheral surface of the vessel inner cylinder to the vessel jacket in the radial direction of the vessel inner cylinder and extends in the axial direction to a length substantially equal to the vessel inner cylinder. Is divided into a plurality of temperature control chambers, and the temperature control chambers are communicated with each other to form one flow path. It can be achieved to. In this magnetic dispersion liquid dispersing device, since the partition plate is provided in the gap between the vessel jacket and the vessel inner cylinder, the temperature of each temperature control chamber can be individually measured from the outer peripheral surface of the vessel jacket. The situation can be determined early and the configuration can be simplified.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a dispersion apparatus for a magnetic dispersion liquid, which is an embodiment of the present invention, will be described in detail with reference to the drawings. FIG. 1 is a front view showing a magnetic dispersion liquid dispersing device according to the present invention, FIG. 2 is a view taken in the direction of arrow A in FIG. 1, and FIG.
-B sectional view, FIG. 4 is a sectional view taken along line CC of FIG. 3, and FIG. 5 is an expanded view of the cooling chamber of the vessel.

As shown in FIG. 1, this magnetic dispersion liquid dispersion apparatus 1 includes a base 11, a dispersion unit 12 fixed on the base 11, and a drive unit 13 disposed on the side of the dispersion unit 12.
And the dispersion liquid supply pump 1 arranged below the dispersion unit 12.
4 is provided. The dispersion portion 12 is for dispersing the magnetic dispersion liquid, and includes a support portion 21 fixed to the base 11, an agitator shaft 22 for stirring which is rotatably attached to the support portion 21, and an outer peripheral side of the agitator shaft 22. And a cylindrical vessel 23 arranged in the. On the outer peripheral surface of the agitator shaft 22, a large number of pins 24 are planted for stirring the magnetic dispersion, and a large number of pins 80 are also planted on the vessel inner cylinder 51 of the vessel 23. Further, the vessel 23 is provided with a temperature control chamber, which is a small chamber for adjusting the temperature of the magnetic dispersion liquid, which is the cooling chambers 54a to 54h (FIG. 4) in this example, as described later.

Agitator shaft 22 and vessel 23
A dispersion liquid inlet 26 and a dispersion liquid outlet 27 are provided at both ends of the dispersion chamber 25 between and. As shown in FIG. 2, the dispersion inlet 26 has a pipe 28 and a valve 29.
It is connected to the discharge port 30 of the dispersion liquid supply pump 14 via. Further, as shown in FIG. 3, the agitator shaft 22 includes an inner cylinder 81 and an outer cylinder 82 arranged concentrically on the outer peripheral side of the inner cylinder 81, and the stirring pin 24 described above is planted in the outer cylinder 82. A plurality of through holes 83 are provided at the tip of the inner cylinder 81.
Is provided. Further, in the inner cooling chamber 84 inside the inner cylinder 81, the cooling water inlet 85 is located at the end portion on the root side.
Is provided, and cooling water, which is a temperature control liquid, is supplied into the inner cooling chamber 84 from here. Further, a cooling water discharge port 87 including a cooling water introduction port 85 is provided at the end of the outer cooling chamber 86 between the inner cylinder 81 and the outer cylinder 82.

The vessel 23 outside the agitator shaft 22 is constructed so that the temperature of the magnetic dispersion liquid in the dispersion chamber 25 can be adjusted, and is provided with a vessel inner cylinder 51 and a vessel jacket 52. Vessel inner cylinder 51
The above-mentioned pin 80 is attached to this by suitable fixing means. As shown in FIG. 4, the vessel inner cylinder 51 and the vessel jacket 52 are concentrically arranged, and the gap between them is a plurality of radially extending from the outer peripheral surface of the vessel inner cylinder 51, eight in this example. It is partitioned by partition plates 53a to 53h and divided into eight cooling chambers 54a to 54h which are temperature control chambers. Of these, a cooling water inlet 55 is provided at an appropriate position, for example, the outer peripheral wall of the cooling chamber 54a, and a cooling water outlet 56 is provided in the cooling chamber 54h adjacent to the cooling water inlet 55.

As shown in FIG. 5, all the partition plates 53b to 53h except a partition plate 53a which separates a cooling chamber 54a having a cooling water inlet 55 and a cooling chamber 54h having a cooling water outlet. Is provided with a communication hole 57. These communication holes 57 are provided at alternate positions so that cooling water can flow in all the cooling chambers 54a to 54h in the longitudinal direction. Thereby, the cooling water can be effectively used. As shown in FIG. 1, a mechanical seal 32 is interposed in the connecting portion between the agitator shaft 22 of the dispersion unit 12 and the drive unit 13, and the magnetic dispersion liquid in the dispersion chamber 25 leaks to the outside through the agitator shaft 22. It does not come out. The drive unit 13 includes a motor 41 arranged above the support unit 21, a fluid coupling 42 connected to the rotation shaft of the motor 41, and a control unit 43. A pulley 44 is attached to an output shaft (not shown) of the fluid coupling 42, and one end of a belt 45 is wound around the pulley 44. The other end of the belt 45 has the agitator shaft 2
It is wound around a pulley 46 attached to the end of No. 2.

Next, the operation of the dispersion device 1 for the magnetic dispersion liquid will be described. In this magnetic dispersion liquid dispersing device 1,
As shown in FIG. 1, the magnetic dispersion liquid discharged from the dispersion liquid supply pump 14 is supplied to the dispersion chamber 25 through the dispersion liquid inlet 26 of the dispersion unit 12. The magnetic dispersion liquid supplied to the dispersion chamber 25 is agitated by a large number of agitation pins 24 of the agitator shaft 22 which is rotationally driven by the motor 41. At this time, the magnetic dispersion is dispersed by a shearing force or the like by the pin 80 fixed to the vessel inner cylinder 51 and the stirring pin 24 of the rotating agitator shaft 23.
The dispersed magnetic dispersion liquid is discharged from the dispersion liquid outlet 27 and sent to the next step.

When the dispersing action of the magnetic dispersion liquid is performed,
As shown in FIG. 3, cooling water is supplied from the cooling water inlet 85 of the agitator shaft 22 into the inner cooling chamber 84.
The cooling water flows into the outer cooling chamber 86 from the through hole 83 at the end of the inner cooling chamber 84, flows axially in the outer cooling chamber 86, and is discharged from the cooling water discharge port 87. This cooling water cools the magnetic dispersion liquid around the agitator shaft 22. The temperature of the cooling water is appropriately set according to the characteristics of the magnetic dispersion liquid. That is, the magnetic dispersion has a temperature suitable for the dispersion treatment, and the temperature of the cooling water or the flow rate of the cooling water can be appropriately set so that the magnetic dispersion is adjusted to this temperature when the magnetic dispersion is stirred and generates heat. it can.

At the same time as the cooling water is supplied to the inside of the agitator shaft 22, as shown in FIG.
Cooling water is also supplied from the cooling water inlet 55 to the cooling chamber 54a. The cooling water sequentially flows through the cooling chambers 54a to 54h and is discharged from the cooling water outlet 56. The temperature of the cooling water supplied to the cooling chamber 54a is also appropriately set according to the characteristics of the magnetic dispersion liquid as described above. In other words, when the magnetic dispersion liquid is stirred and generates heat, the temperature becomes suitable for dispersion.
The temperature or flow rate of cooling water is set. in this way,
The magnetic dispersion liquid in the dispersion chamber 25 is agitator shaft 22.
And, it is cooled from inside and outside by the vessel 23 and is adjusted to a temperature suitable for dispersion as a whole. This ensures distributed processing and improves the quality of the final product.

As described above, the magnetic dispersion liquid dispersing apparatus 1 is provided with the partition plates 53a to 53h only between the vessel inner cylinder 51 and the vessel jacket 52 of the vessel 23, and therefore, as in the conventional case. The structure is extremely simple and the cost can be reduced as compared with the case where the inner vessel of the vessel is doubled and the gap is divided by a partition wall and the vessel jacket is arranged on the outer side thereof. Also, the vessel jacket 5
2. That is, since the outer walls of the cooling chambers 54a to 54h are exposed, the internal condition can be determined early by measuring the temperature of the outer walls of the cooling chambers 54a to 54h. For example, if the temperature of some cooling chambers is too high compared to the temperature of other cooling chambers, it can be determined that some trouble has occurred in the vicinity of some of these cooling chambers.
This allows appropriate treatment to be performed quickly.

Further, since the cooling water flowing through the cooling chambers 54a to 54h is directly discharged from the last cooling chamber 54h, the temperature of the discharged cooling water is measured to increase the temperature of the cooling water. Can be accurately detected.
This makes it possible to appropriately adjust the temperature and the supply amount of the cooling water, and to reliably disperse the magnetic dispersion liquid. Although cooling water is used as the temperature control liquid in the above-described embodiment, any liquid suitable for temperature control can be used depending on the dispersion material.

[0017]

As described above, according to the present invention,
Since the temperature control chamber is formed only by the partition plate that is directly suspended in the gap between the vessel jacket and the inner vessel of the vessel, the outer surface of the vessel jacket can be used to grasp the cooling status of the inner vessel of the vessel. It is possible to measure the temperature of each temperature control room individually, which allows the internal condition to be judged early and prompt measures can be taken even if a problem occurs. Furthermore, the device of the invention comprises
Since the temperature control chamber is formed only by the partition plate that is directly suspended in the gap between the vessel jacket and the inner vessel of the vessel, there is a double temperature control chamber on the outside of the inner vessel of the vessel as in the past. Since the structure is much simpler than the structure provided, the cost of the device can be reduced.

[Brief description of drawings]

FIG. 1 is a diagram showing a dispersion device of a magnetic dispersion liquid according to the present invention.

FIG. 2 is a view taken in the direction of arrow A in FIG. 1;

3 is a sectional view taken along line BB of FIG.

FIG. 4 is a sectional view taken along the line CC of FIG. 3;

FIG. 5 is a developed view of the cooling chamber of the vessel inner cylinder according to the present invention.

FIG. 6 is a cross-sectional view of a dispersion unit in a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dispersion device 12 Dispersion part 13 Drive part 22 Agitator shaft 23 Vessel 24 Stirring pin 25 Dispersion chamber 51 Vessel inner cylinder 52 Vessel jacket 53a-53h Partition plate 54a-54h Cooling chamber 57 Communication hole

Claims (1)

[Claims] 1. A vessel inner cylinder is arranged inside a vessel jacket with a predetermined gap, and an agitator shaft for stirring is rotatably arranged inside the vessel inner cylinder, and at least the vessel jacket and the vessel In a dispersion apparatus configured to adjust the temperature of a liquid to be dispersed supplied between the inner vessel of the vessel and the agitator shaft by inserting a temperature control liquid into the gap between the vessel and the inside of the vessel. The gap is divided into a plurality of temperature control chambers by a partition plate that extends radially from the outer peripheral surface of the tube to the vessel jacket in the radial direction of the vessel inner tube and extends axially to a length substantially equal to the vessel inner tube. A dispersion device, wherein the temperature control chambers are communicated with each other to form one flow path.