JP3224587U - Nanoemulsion manufacturing equipment - Google Patents

Abstract

An emulsion production apparatus for producing an emulsion of several tens of nm is provided. An ultrasonic transducer having a plurality of ultrasonic transducers, the frequencies of the ultrasonic transducers being different, and a combination of a low frequency, a medium frequency, and a high frequency. [Selection diagram] Fig. 1

Description

The present invention relates to an apparatus using a technique of stabilizing a mixture of two kinds of solutions for a long time by using an ultrasonic vibrator to create an emulsion and stabilizing the mixture, and furthermore, making the mixture transparent.

When mixing two types of liquids, a stirrer having a stirring blade has been often used. The two liquids were physically mixed by a stirring blade to create a mixture. However, if the mixture produced here is, for example, water and oil, it will be separated into two layers in the original state after stirring. To that end, adding a surfactant meant mixing water and oil.

For example, in the field of detergents, the use of surfactants causes the drainage water after washing to flow, and the possibility that the drainage water flows from the river to the sea may lead to marine pollution. ing.

JP, 2018-135403, A Patent No. 6067114 Japanese Translation of PCT Application No. 2000-504344, Patent Application 2009-182706

In the prior art, the use of a surfactant stabilizes the emulsion, and the shearing method uses stirring or high pressure. As in the present invention, an emulsifier using ultrasonic waves is manufactured, but shearing is performed by using a wavelength of about 20 to 40 KHz. It is only on the order of nm, and it is impossible to make it transparent.

The present invention is to create a system for producing an emulsion of several tens nm.
At that time, a solution composed of two different liquids is finely sheared, and the solution is intended to be transparent.

In the present invention, three ultrasonic transducers are used. The three ultrasonic transducers are low frequency, medium frequency, and high frequency. The low frequency is 20 to 40 KHz, the medium frequency is 1 MHz to 2 MHz, and the high frequency is 2 MHz or more.

These three types of ultrasonic transducers are operated in the order of low frequency, medium frequency, and high frequency. Thereby, the particle size of the emulsion finally becomes several tens of nm.

The conventional stirring operation, even when stirring at high speed, may require 10 to 24 hours to finely shear the emulsion particles, which is a problem from the viewpoint of productivity. . This is too costly and affects the cost of the manufactured product. In the present invention, workability can be improved by simultaneously performing three types of ultrasonic transducers. Further, the working time for each vibrator can be 10 minutes or more. Also, in the dilution step, which is the final step, the time was shortened by performing the operation with an ultrasonic vibrator (low frequency) instead of stirring.

Is a step of forming a nanoemulsion by mixing two types of liquids. The tank (A) and the tank (B) are filled with different liquids and injected into the mixed layer (C1) in the direction of the arrow at a mixing ratio of each liquid. The low-frequency vibrator (E1) is inserted into the mixed layer (C1) and performs the first stage shearing. After the completion of the shearing operation, the working plate (D) rotates to move the mixed layer (C1) to the position of the medium frequency oscillator (E2), and performs the second stage shearing operation. At this time, liquid is injected into the mixed layer (C2) from the tank (A) and the tank (B), and a shearing operation is performed by inserting the low-frequency vibrator (E1). Further, the mixed layer (C1) is moved to the position of the high-frequency vibrator (E3) by rotation of the working plate (D), and the high-frequency vibrator (E3) is inserted, so that the third-stage shearing is performed. Work is performed. The mixed layer (C2) performs the second stage shearing operation, the mixed layer (C3) is injected from the tank (A) and the tank (B), and the low frequency oscillator (E1) is inserted. A first stage shearing operation is performed. After that, the operation of the mixed layer (C1) is completed and replaced with a new mixed layer. By performing the same operation, a plurality of steps in a short time can be efficiently performed. Is a step of diluting the produced nanoemulsion. In some cases, the nanoemulsion solution is used as it is, but in many cases, it is diluted to make it a product suitable for use. Therefore, a dilution step is required. The prepared nanoemulsion solution is injected into the tank (F), and a certain amount is flowed into the tank (H). At this time, purified water for dilution is injected from the tank (G) in accordance with the dilution ratio. In the tank (H), mixing can be performed in a short time by the low-frequency ultrasonic vibrator (E4). The mixture is filled into the product container from the filling port (I).

The nanoemulsion manufacturing apparatus according to the present invention facilitates work in a short time. Conventionally, the production of an emulsion by stirring requires a long working time, and an environment in which the temperature is kept high is required. This arises from the necessity of loosening the lumps formed by entanglement of the molecules constituting the solution. Ultrasound achieved this shear by transmitting waves to the solution. First, loosening the rough part at low frequency, and further increasing the frequency could loosen (shear) the entanglement of molecules. As a result, the molecular mass became several tens of nm, and an emulsion was formed with another solution, and the emulsion could be made transparent. Furthermore, a stable state could be formed by keeping the van der Waals force, which is the molecular attraction between the emulsions.

Using the nanoemulsion manufacturing apparatus of the present invention, a nanoemulsion of soybean fatty acid and purified water was manufactured. Using 20 parts by weight of soybean fatty acid and 80 parts by weight of purified water, the mixture was poured into a tank and subjected to shearing in three stages of low frequency, medium frequency and high frequency. In this case, an O / W emulsion was formed in the solution, and the particle size was several tens nm. At this time, the solution temperature rose to about 80 ° C. A deodorizing test with ammonia was performed on a solution obtained by increasing the produced nanoemulsion by 200 times. After spraying the solution, it became instantly odorless. Further, the equipment after the cooking of Chinese food was washed using the solution. At that time, the oil stain was able to be washed by placing.

The nanoemulsion manufacturing apparatus according to the present invention can be used in the cosmetics field or the cleaning field. Conventionally, in these fields, a surfactant has been a necessity, but the present invention does not require a surfactant, and there is no need to treat industrial wastewater or domestic wastewater. This is because all components are made of natural materials, and there is no problem in irritation to the skin or toxicity in the body. As a result, it is considered that the device of the present invention has high utility value in the food field.

A is a tank for storing the solution.
B is a tank for storing the solution.
C1, C2 and C3 are mixed layers.
D is a working plate.
E1 is a low frequency oscillator.
E2 is a medium frequency oscillator.
E3 is a high-frequency vibrator.
E4 is a low frequency oscillator.
F is an intermediate product tank.
G is a tank for the diluted solution.
H is a mixing tank.
I is a filling port.

Is a step of forming a nanoemulsion by mixing two types of liquids. The tank (A) and the tank (B) are filled with different liquids and injected into the mixing tank (C1) in the direction of the arrow at a mixing ratio of each liquid. A low-frequency oscillator (E1) is inserted into the mixing tank (C1), and performs the first stage shearing. After the completion of the shearing operation, the work plate (D) rotates to move the mixing tank (C1) to the position of the medium frequency oscillator (E2), and the second stage shearing operation is performed. At this time, the mixing tank (C2) is filled with liquid from the tank (A) and the tank (B), and the shearing operation is performed by inserting the low-frequency vibrator (E1). Further, the mixing tank (C1) is moved to the position of the high-frequency vibrator (E3) by the rotation of the work plate (D), and the high-frequency vibrator (E3) is inserted, so that the third stage shearing is performed. Work is performed. The mixing tank (C2) performs the second stage shearing work, and the mixing tank (C3) is filled with the tank (A) and the tank (B), and the low-frequency oscillator (E1) is inserted. A first stage shearing operation is performed. Thereafter, the operation of the mixing tank (C1) is completed, and the mixing tank (C1) is replaced with a new mixing tank. By performing the same operation, a plurality of steps in a short time can be efficiently performed. Is a step of diluting the produced nanoemulsion. In some cases, the nanoemulsion solution is used as it is, but in many cases, it is diluted to make it a product suitable for use. Therefore, a dilution step is required. The prepared nanoemulsion solution is injected into the tank (F), and a certain amount is flowed into the tank (H). At this time, purified water for dilution is injected from the tank (G) in accordance with the dilution ratio. In the tank (H), mixing can be performed in a short time by the low-frequency ultrasonic vibrator (E4). The mixture is filled into the product container from the filling port (I).

A is a tank for storing the solution.
B is a tank for storing the solution.
C1, C2 and C3 are mixing tanks.
D is a working plate.
E1 is a low frequency oscillator.
E2 is a medium frequency oscillator.
E3 is a high-frequency vibrator.
E4 is a low frequency oscillator.
F is an intermediate product tank.
G is a tank for the diluted solution.
H is a mixing tank.
I is a filling port.

Claims (4)

An apparatus for producing a nanoemulsion, comprising a plurality of ultrasonic vibrators, wherein the frequencies of the ultrasonic vibrators are different, and a combination of a low frequency, a medium frequency, and a high frequency. 2. The nanoemulsion production apparatus according to claim 1, further comprising a mixing layer for mixing two kinds of liquids, wherein a step of causing shearing by inserting an ultrasonic vibrator into the mixing layer can be performed. 2. The nanoemulsion production apparatus according to claim 1, wherein each of the mixed layers can be automatically moved by rotating a plate on which the mixed layers can be placed. The nanoemulsion manufacturing apparatus according to claim 1, wherein a low frequency ultrasonic oscillator is used in the step of diluting the nanoemulsion generated in the mixed layer.

Images