JPS59123519A - Producing device of emulsified liquid - Google Patents

Abstract

PURPOSE:To provide a titled device which can easily and continuously produce an emulsified liquid contg. dispersed phase particles subjected to grain size control by the constitution wherein a continuous phase liquid and the dispersed phase liquid are ejected respectively from nozzles toward the liquid contact surface of a rotary atomizing head. CONSTITUTION:A disc type rotary atomizing head 2 attached to the output shaft 3A of a motor 3 mounted on a cylinder 5 is rotated at a high speed of about >=10,000 rpm. A continuous phase liquid and a dispersed phase liquid are forcibly fed respectively from storage tanks 9, 12 by pumps 8, 11 and are ejected from ejection nozzles 13, 14 onto the upper surface of the head, thereby forming the liquid contact surface. Said nozzle 13 is disposed on the central side of rotation of the liquid contact surface and forms a thin film of the continuous phase liquid on the liquid contact surface. The nozzle 14 is disposed on the outside circumferential side to incorporate the dispersed phase liquid into the thin film of the continuous phase liquid. The formed film of the liquid mixture is atomized and emulsified by centrifugal force from the edge of the head 2. The emulsified liquid accumulates in the bottom of an emulsifying tank 1. The atomizing degree of the dispersed phase particles in the emulsified liquid is controllable by changing the rotating speed of the atomizing head, and the discharge pressure of the pumps 8, 11, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an emulsion manufacturing apparatus capable of continuously manufacturing an emulsion in which dispersed phase fine particles are mixed into a continuous phase liquid.

2. Description of the Related Art Conventionally, an emulsion manufacturing apparatus is known in which an emulsion can be manufactured by filling an emulsification tank with a continuous phase liquid and a dispersed phase liquid and stirring the mixed liquid. However, such conventional emulsion manufacturing apparatuses have drawbacks such as inability to continuously manufacture emulsions and difficulty in controlling the particle size of dispersed phase particles.

The present invention was made in view of the drawbacks of the prior art,
The emulsion can be produced continuously, the particle size of the dispersed phase particles can be easily controlled, and the mixing ratio of the dispersed phase liquid and the continuous phase liquid is
It is an object of the present invention to provide an emulsion manufacturing apparatus which enables control of the supply amount per unit time of a dispersed phase liquid and a continuous phase liquid, and also enables yield control.

In order to achieve the above-mentioned object, the emulsion manufacturing apparatus according to the present invention is provided with a rotating atomizing head which is rotationally driven by a rotational drive means in an emulsifying tank and atomizes the supplied liquid, A special feature is that a liquid contact surface is formed at the head of the catalytic converter, and a continuous phase liquid jetting nozzle for jetting a continuous phase liquid toward the liquid contacting surface and a dispersed phase liquid jetting nozzle for spouting a dispersed phase liquid are arranged. That is.

With this configuration, the continuous phase liquid and the dispersed phase liquid ejected from the continuous phase liquid ejection nozzle and the dispersed phase liquid ejection nozzle adhere well to the liquid contact surface, and are also thinned by the rotation of the rotating atomizing head. The emulsion is atomized by the rotating atomizing head and becomes an emulsion.

As a result, it is possible to continuously produce an emulsion with extremely good dispersibility of the dispersed phase particles, a uniform particle size distribution, and good surface quality. Moreover, by changing the supply ratio of the dispersed phase liquid and the continuous phase liquid, the content concentration of the dispersed phase fine particles in the emulsion can be easily controlled.

In the present invention, a liquid at room temperature is used as the dispersed phase liquid. In addition, a disc-shaped or bell-shaped rotating atomizing head is preferably used, and this rotating atomizing head is an electrostatic type that applies a high pressure, or a mechanical type that does not apply a high voltage. The formula is used.

Embodiments of the present invention will be described below based on the drawings.

First, FIGS. 1 to 4 show a first embodiment of the present invention. In the figures, 1 indicates an emulsification tank, and in the emulsification tank 1, a disk-shaped rotating atomizing head 2 is installed upwardly. It is installed by inserting it from The rotary atomizing head 2 is attached to an output shaft 3A of a motor 3 serving as rotation driving means, and is rotated at high speed by the motor 3. A liquid contact surface 4 is formed on the upper surface of the rotary atomizing head 2, and a large number of recesses are formed on the peripheral edge of the liquid contact surface 4 toward the groove and the groove 2A of the rotary atomizing head 2. Grooves 2B, 2B, . . . are carved. On the other hand, a motor 3 connected to the rotary atomizing head 2 is supported by a cylinder 5 so as to be movable up and down.

Reference numeral 6 indicates a continuous phase liquid supply pipe for supplying continuous phase liquid to the rotary atomizing head 2, one end of which is connected to a connecting member 7 connected to the motor 3, and the other end of the continuous phase liquid supply pipe 6. is connected to a continuous phase liquid tank 9 via a pump 8. Further, 10 is a dispersed phase liquid supply pipe for supplying the dispersed phase liquid to the rotary atomizing head 2. One end of the dispersed phase liquid supply pipe 10 is connected to the connecting member 7, and the other end is connected to the connecting member 7 via the pump 11. and is connected to the dispersed phase liquid tank 12. Reference numeral 13 indicates a continuous phase liquid ejection nozzle, and numeral 14 indicates a dispersed phase liquid ejection nozzle. It is connected to the supply pipe 10 and extends vertically from the connecting member 7 to the liquid contact surface 4 of the rotary atomizing head 2 . The continuous phase liquid jetting nozzle 13 is provided facing the rotation center of the liquid contact surface 4, and the dispersed phase liquid jetting nozzle 14 is located closer to the outer periphery than the continuous phase number jetting nozzle 13. It is provided. These continuous phase liquid jetting nozzle 13 and dispersed phase liquid jetting nozzle 14 rotate and atomize the continuous phase liquid and dispersed phase liquid that are pumped from the continuous phase liquid supply pipe 6 and the dispersed phase liquid supply pipe 10 by pumps 8 and 11, respectively. The continuous phase liquid ejection nozzle 1
Nozzle tips 15 and 16 are provided at the tips of the nozzles 3 and 4, respectively. Each nozzle tip 15,16 has a spout 1 as shown in FIG.
5A, 16A, and the spout 15A.

Circular protrusions 15B, 16B surrounding 16A, and the circular protrusion 1
Lip groove 1.5C formed by cutting 5B and 16B with a V-shaped groove
, 16C are formed, respectively.

Furthermore, 17 is an emulsion liquid outflow pipe provided at the lower part of the emulsification tank 1, and is connected to the emulsion liquid tank 19 through the pipe 17Vi and an on-off valve 18 in the middle thereof.

When manufacturing an emulsion using the emulsion manufacturing apparatus configured as described above, first, the motor 3 is driven to drive the rotary atomizing head 2 one rotation at a rotation speed of, for example, 10,000 rpm or more. . In this state, drive pump 8.11,
At a predetermined hydraulic pressure, the continuous phase liquid is supplied from the continuous phase liquid supply pipe 6 to the continuous phase liquid jetting nozzle 13, and the dispersed phase liquid is supplied to the dispersed phase liquid supply pipe 10.
The dispersed phase liquid is supplied to the dispersed phase liquid jetting nozzle 14 from there. The continuous phase liquid supplied to the continuous phase liquid jetting nozzle 13 is ejected from the one mass port 15A of the nozzle chip 15 toward the liquid contact surface 4. Moreover, since the ejection pattern from the ejection nozzle 13 expands in the shape of a thin film fan, at the time of contact with the liquid contact surface 4, the ejection pattern is as shown in FIG. 4(a).

(b) I As shown in (C), layered A□, hole circular B1
It has a wide planar shape, such as a two-circle C□, and is already in a state where thinning has progressed, and moreover, it can be brought into good contact with the liquid contact surface 4. The continuous phase liquid that has adhered to the thin film in this way is diffused along the liquid contact surface 4 due to the action of centrifugal force, and further thinning of the film is promoted. On the other hand, the dispersed phase liquid jetting nozzle 14
The dispersed phase liquid supplied to the above-mentioned continuous phase liquid has a layer type A2
, an elliptical B22, a circular C2, etc., are sprayed onto the liquid contact surface 4. However, since the dispersed phase liquid jetting nozzle 14 is located on the outer peripheral side of the continuous phase liquid jetting nozzle 13,
The dispersed phase liquid becomes a thin film and is mixed into the continuous phase liquid film which diffuses.

Moreover, since the ejected dispersed phase liquid has a predetermined liquid pressure, it has good conformability to the continuous phase liquid film, and a homogeneous mixed liquid film is formed. This mixed liquid film is further promoted to become thinner and reaches the edge portion 2A. Since the grooves 2B are carved in the edge portion 2A, the mixed liquid film of the continuous phase liquid and the dispersed phase liquid is divided into branched flows lodged in the grooves 2B, forming a thin liquid system. This liquid system is sheared and becomes fine particles. The particles sprayed in this manner accumulate at the bottom of the emulsification tank 1, and an emulsion liquid in which starved dispersed phase fine particles are dispersed in the continuous phase liquid is obtained. The emulsion thus obtained is recovered as emulsion 41i120 by opening the on-off valve 18°.

Here, if of the dispersed phase fine particles in the emulsified liquid is determined by appropriately adjusting the mixing ratio between the amount of the continuous phase liquid that can be jetted out from the continuous phase liquid jetting nozzle 13 and the amount of the dispersed phase liquid that can be jetted out by the dispersion 40 and the dispersing jetting nozzle 14. By selecting, you can easily control jijlJ. Furthermore, the degree of atomization of the dispersed phase particles is determined by the rotational atomization head 2.
This can be controlled by changing the rotational speed of the cylinders 18 and 11 or by changing the discharge pressure of the cylinders 18 and 11.

Furthermore, the continuous phase liquid jetting nozzle 13 and the dispersed phase liquid jetting nozzle 14 do not necessarily have to be arranged so as to be open on both sides of the rotation center of the liquid contact surface 4; For example, depending on the rotational speed of the rotary atomizing head 2, etc., the pattern D shown in FIG. 4(d), the same side as shown by D2, or the desired angle as shown by pattern E11 in FIG. 4(e). They may be arranged so that they are ejected at positions whose phases are shifted by a certain amount. In addition, each jet nozzle 13
．． 14 are not only provided with one each, but also as shown in Fig. 4 (
f) with patterns F□, F1 and F2. As shown in F2, a plurality of ejection nozzles may be used to eject.

Next, FIGS. 5 and 6 show a second embodiment of the present invention. In this embodiment, a bell-shaped rotating atomizing head is used, and the rotating atomizing head has a high height. The device is shown applying voltage. The dispersed phase liquid used in this example is, for example, an oil, fat, or resin that has a high viscosity or is solid at room temperature, but whose viscosity decreases when heated.

Components that are the same as those in FIGS. 1 to 3 will be given the same reference numerals and their explanations will be omitted.
Reference numeral 1 indicates a rotating atomizing head, and the rotating atomizing head 21 has a structure as shown in FIG. That is, the rotary atomizing head 21 is roughly composed of a hub member 22 and a bell-shaped atomizing head main body 23 fixed to the hub member 22, and the hub member 22 is fixed to the output shaft 3A of the motor 3. It is provided. A liquid contact surface 24 is formed on the inner surface of the hub member 22, and a large number of liquid outlet ports 2 are formed on the peripheral edge of the liquid contact surface 24.
5, 25, . . . are drilled. On the other hand, the liquid flowing out from the liquid outlet 25 comes in contact with the inner surface of the atomizing head main body 23, and the liquid contact surface 26 spreads the liquid into a thin film.
is formed. A large number of grooves 23B, 23B, . . . are formed in the edge portion 23A of the atomizing head main body 23 from the peripheral edge of the liquid contact surface 26 toward the edge portion 23A. The continuous phase liquid jetting nozzle 13 and the dispersed phase liquid jetting nozzle 14 are arranged facing toward the liquid contact surface 24 of the hub member 22, and these positions are such that the continuous phase liquid jetting nozzle 13 is located at the center of rotation of the liquid contact surface 24. In the closer position, the dispersed phase liquid jetting nozzle 14 is located closer to the outer periphery. Furthermore, the liquid contact surfaces 24 of the continuous phase liquid jetting nozzle 13 and the dispersed phase liquid jetting nozzle 14
The jetting pattern is the same as in the first embodiment described above.
Figure (a) 5 (bl t (C1, (al t (e
1, as shown in (f).

Next, since a dispersed phase liquid that is solid at room temperature is used, it is necessary to heat the dispersed phase liquid to reduce its viscosity. For this purpose, the dispersed phase liquid is heated and melted in the dispersed phase liquid tank 12' by using an appropriate heating means such as a heater. And dispersed phase liquid supply pipe 1
01 is designed to prevent the viscosity of the dispersed phase liquid supplied to the rotary atomizing head 2 from increasing by using a heating pipe. On the other hand, although the continuous phase liquid does not necessarily need to be heated, in order to prevent the dispersed phase liquid from cooling when the continuous phase liquid comes into contact with the dispersed phase liquid, the continuous phase liquid tank 91 is also kept in a heated state. , continuous phase liquid supply pipe 61
It is also preferred to use heated or insulated pipes.

However, since the rotary atomizing head 21 is rotated at an extremely high speed, the inside of the atomizing head main body 23 becomes negative pressure, an air bombing phenomenon occurs, and the liquid contact surface 26 formed on the inner surface of the atomizing head body 23 becomes negative pressure. It gets cooled down. For this reason, the dispersed phase liquid in a caloric state is cooled on the liquid contact surface 26, and its viscosity increases, deteriorating the atomization effect. Therefore,
In this embodiment, a heated steam supply pipe 27 is provided in order to prevent such cooling of the rotary atomizing head 21.

One end of the heating steam supply pipe 27 is connected to the boiler 28, and the other end extends into the emulsification tank 1 via a bent part IA formed at the bottom of the emulsification tank 1, and a steam port formed at the tip thereof. 27A is opened on the inside of the rotary atomizing head 21, and can supply heated steam to the liquid contact surface 26 of the atomizing head main body 23.

Furthermore, 29 indicates a high voltage generator, and the high voltage generator 29 is configured to be able to apply a high voltage to the rotating atomizing head 21 via a voltage cable 30.

When applying a high voltage to the rotating atomizing head 21 in this way, it is necessary to insulate the rotating atomizing head 21. Therefore, in this embodiment, the motor 3 is directly connected to the cylinder 5 for lifting/lowering.
The motor 3 is not connected to the cylinder 5, but is supported by the cylinder 5 via a bracket 31 made of an insulating material. and,
Since the continuous phase liquid is usually a good conductor, the continuous phase liquid tank 91. The pump 8 and the continuous phase liquid supply pipe 61 have a structure that is not grounded. Furthermore, when using a conductive dispersed phase liquid, the dispersed phase liquid tank 121, pump 11, and dispersed phase liquid supply pipe 101 must also have a structure that is not grounded.

This embodiment is constructed as described above, and while the rotary atomizing head 21 is rotating at high speed, the continuous phase liquid is ejected from the continuous phase liquid ejection nozzle 13 onto the liquid contact surface 24, and the continuous phase liquid is ejected from the dispersed phase liquid ejection nozzle 1.
4, the dispersed phase liquid is spouted out. Then, the mixed liquid of the continuous phase liquid and the dispersed phase liquid supplied to the liquid contact surface 24 flows out from the liquid outlet 25 and reaches the liquid contact surface 26, where it is diffused into a thin film while being diffused into the concave groove 23B of the peripheral part. is equal to The mixed liquid thus led to the recess 23B extends in the form of a liquid system from the atomizing head main body 23's opening and closing section 23A, and is evaporated.

In this case, since the rotary atomizing head 21 is connected to the high voltage generator 29, the high voltage generator 29 generates, for example,
A high voltage in the range of ˜±15 Qkv is applied to the rotating atomizing head 21. This allows electrostatic atomization to occur in addition to centrifugal atomization, further promoting atomization.

Even if a dispersed phase liquid that is solid at room temperature is used, the dispersed phase liquid tank 12' may be used as a heating tank, the dispersed phase liquid supply pipe 10' may be used as a heating or heat-insulating pipe, or At the same time, the continuous phase liquid tank 91 and the continuous phase liquid supply pipe 61 are also heated, and heated steam is supplied to the rotary atomizing head 21 from the heated steam supply pipe 27, so that the emulsified liquid is heated. Until it is formed, the dispersed phase liquid is always maintained in a low viscosity state, and its atomization is carried out smoothly and reliably.

In addition, in each of the above-mentioned embodiments, the rotation 2 atomization head 2.21
Although the description has been made assuming that the grooves 2B and 23B are provided, it is not necessary to provide them.

Furthermore, although the rotating atomizing heads 2 and 21 are supported by the cylinder 5 so as to be movable up and down, the rotating atomizing heads 2 and 21 may be supported by a simple support member. Further, as the motor 3 as a rotational drive means, an electric motor, an air motor, or other appropriate motor can be used, and a turbo air motor is particularly preferably used when rotating the rotary atomizing heads 2, 21 at extremely high speeds. . Furthermore, the second
In the embodiment described above, the heating device for the rotary atomizing head 21 has been described as consisting of the boiler 28 and the heated steam supply pipe 27, but a device for supplying heated air may be used instead. Particularly, when manufacturing an emulsion in a steam atmosphere is not desired, a heating device that supplies heated air is effectively used. In addition, the heated air is connected to the connecting member 7.
It is also possible to supply the liquid to the liquid contact surface 24 of the hub member 22 or to the back surface of the rotary atomizer 1. Furthermore, in order to provide a heating device in the first embodiment, for example, a member corresponding to the heated steam supply pipe 27 in the second embodiment is provided, and heated air is supplied from the connecting member 7 to the liquid contact surface 4. You can configure it to do so.

[Brief explanation of the drawing]

1 to 4 show the first embodiment of the present invention, FIG. 1 is a system diagram showing an emulsion manufacturing apparatus, FIG. 2 is an enlarged view of the main part of FIG. 1, and FIG. Front view of the nozzle tip of the ejection nozzle, FIGS. 4(a) and 4(b) (C). (d) s (e) and (f) are explanatory diagrams showing jetting patterns, FIGS. 5 and 6 show a second embodiment of the present invention, and FIG. 5 is a system showing an emulsion manufacturing apparatus. FIG. 6 is a longitudinal sectional view of the rotating material head. 1... Emulsification tank, 2, 21... Rotating atomization head, 3...
Motor, 4, 24, 26... Liquid contact surface, 13... Continuous phase liquid jetting nozzle, 14-... Dispersed phase liquid jetting nozzle, 27
...Heating steam supply pipe, 28...Boiler, 29...
- High voltage generator, 30...high voltage cable.

Claims (6)

[Claims] (1) A rotary atomizing head that is rotatably driven by a rotary drive means and atomizes the supplied liquid is provided in the emulsification tank, and a liquid contact surface is formed on the rotary atomizer head, and a liquid contact surface is formed on the rotary atomizer head. A device for producing an emulsion comprising a continuous phase liquid jet nozzle for spouting a continuous phase liquid and a dispersed phase liquid spouting nozzle for spouting a dispersed phase liquid. (2) The continuous phase liquid jetting nozzle is disposed on the rotation center side of the liquid contact surface, and the dispersed phase liquid jetting nozzle is disposed at a position away from the rotation center of the liquid contact surface. (1
) The emulsion manufacturing apparatus described in item 2. (3) The emulsion manufacturing apparatus according to claim (1), wherein the rotary converting head is a disk-shaped rotating YH converting head. (4) The emulsion manufacturing apparatus according to claim 1, wherein the rotating atomizing head is a bell-shaped rotating atomizing head. (5) The emulsion manufacturing apparatus according to claim (1), wherein a high voltage generator is connected to the rotating atomizing head. (6) The emulsion manufacturing apparatus according to claim (1), further comprising a heating device for heating the liquid contact surface.