JP7269031B2 - Gas-liquid dissolving tank - Google Patents

Description

TECHNICAL FIELD The present invention relates to a gas-liquid dissolving tank and shower system suitable for generating microbubbles.

Water containing microbubbles has attracted attention as a substance that enhances the cleaning effect and the like, and a microbubble generator for generating microbubbles of air in water has been proposed. In these apparatuses, the performance of the gas-liquid dissolving tank is related as one of the factors necessary for efficiently generating fine bubbles of good quality. Therefore, Patent Document 1 discloses a dissolving tank devised for the purpose of improving gas dissolving performance. This dissolving tank has an inlet and an outlet for the gas-liquid mixture above and below the tank body. In addition, a turbulence promoting plate is arranged inside the tank body, and the gas-liquid mixture flowing in from the inlet of the tank body collides with the turbulence promoting plate, causing bubbles in the liquid inside the tank to rise. It is intended to increase the dissolution ratio of the liquid to the liquid by improving the stirring action of the liquid.

Japanese Unexamined Patent Application Publication No. 2001-129377

However, the turbulence-promoting plate of the dissolution tank actually has the problem that the desired stirring action cannot be obtained and the dissolution ratio of the liquid in the dissolution tank cannot be dramatically increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a gas-liquid dissolving tank capable of increasing the dissolution ratio of liquid and gas, shortening the dissolving time, and reducing the size.

A gas-liquid dissolving tank comprising: a tank body having an inlet and an outlet for a gas-liquid mixture; , a bottomed cylinder having an opening and a bottom, and by arranging the opening so as to face the inlet of the tank body with a predetermined gap, the gas-liquid mixture flowing in from the inlet is The stirring means collides with the bottom of the stirring means to be stirred, and the outer wall of the stirring means is provided with a plurality of small diameter holes. Air bubbles are subdivided and flow into the space formed between the tank body and the stirring means. While being discharged from the outlet, the bubbles with a diameter exceeding micrometers float and flow again through the opening of the stirring means, thereby repeating stirring until they are subdivided into micrometers or less in diameter. By gas-liquid dissolving tank.

In addition, it is preferable that the ratio of the inner diameters of the inlet of the tank main body, the stirring means and the tank main body is set to approximately 1:2:3.

The distance between the inlet of the tank body and the opening of the stirring means is preferably set to be substantially the same as the distance between the inner wall of the tank body and the outer wall of the stirring means.

The stirring means is preferably made of punching metal.

According to the present invention, the agitating means formed in a cylindrical shape with a bottom enhances the agitating action of the gas-liquid mixture that has flowed into the inside of the tank body. It is possible to provide a gas-liquid dissolving tank that can shorten the

1 is a longitudinal sectional view of a gas-liquid dissolving tank according to the present invention; FIG. 1 is a cross-sectional view of a gas-liquid dissolving tank according to the present invention; FIG.

An embodiment of the present invention will be described below based on the drawings. In FIG. 1, 1 is a gas-liquid dissolving tank, which is composed of a tank body 2 and a stirring means 3 arranged inside the tank body 2 .

The tank body 2 has a substantially cylindrical shape with an inlet 2a at the top and an outlet 2b at the bottom. 2b is configured to flow out.

As shown in FIGS. 1 and 2, the stirring means 3 has a bottomed cylindrical shape and is arranged inside the tank body 2 by means of a support member 2d extending inwardly from an inner wall 2c of the tank body 2. . The stirring means 3 has an opening 3a and a bottom 3b, and the opening 3a is arranged to face the inlet 2a of the tank main body with a predetermined gap therebetween. Therefore, the gas-liquid mixture that has flowed in from the inlet 2a of the tank body 2 flows in from the opening 3a of the stirring means 3 and is stirred by colliding with the bottom 3b.

The stirring means 3 is made of punching metal except for the bottom portion 3b. Therefore, the gas-liquid mixture collided with the bottom portion 3b is fragmented into small bubbles when passing through the small-diameter holes of the punching metal from the inside of the stirring means 3 . Then, the gas-liquid mixture containing the finely divided bubbles flows into the space formed between the inner wall 2c of the tank body 2 and the outer wall 3c of the stirring means 3. As shown in FIG.

Among the bubbles finely divided by the punching metal of the stirring means 3, fine bubbles finely divided into diameters of micrometers or less (hereinafter, bubbles of such size are referred to as microbubbles) lose their levitation force and fall. It is discharged from the outflow port 2b of the tank body 2. On the other hand, bubbles that have been subdivided by the punching metal but have not been subdivided into diameters of micrometers or less (hereafter, bubbles of such size are referred to as millibubbles) float due to their levitation force.

The millibubbles float in the space formed between the inner wall 2c of the tank body 2 and the outer wall 3c of the stirring means 3, and flow into the interior through the opening 3a of the stirring means 3 again. Then, the air bubbles are subdivided again by the punching metal. By repeating such circulation, the dissolved concentration of the gas in the liquid inside the tank body 2 is increased, and a gas-liquid mixture containing a large amount of microbubbles is discharged from the outflow port 2b of the tank body.

Regarding the inner diameter α of the inlet 2a of the tank body 2, the inner diameter β of the stirring means 3, and the inner diameter γ of the tank body 2, the inner diameter ratio α:β:γ is set to approximately 1:2:3. there is With this configuration, the stirring efficiency of the gas-liquid mixture is further enhanced, so that the dissolution time can be shortened.

Further, the distance h1 between the inlet 2a of the tank body 2 and the opening 3a of the stirring means 3 is set substantially equal to the distance h2 between the inner wall 2c of the tank body 2 and the outer wall 3c of the stirring means 3. With this configuration, the gas-liquid mixture smoothly circulates, so that the stirring efficiency is enhanced.

Further, since the total length of the stirring means is set to be more than half the total length of the inside of the tank body 2, the air bubbles can be efficiently broken down by the punching metal.

The specific configuration of each part of the present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the present invention.

1 gas-liquid dissolving tank 2 tank body 2a inlet 2b outlet 2c inner wall 3 stirring means 3a opening 3b bottom 3c outer wall

Claims (4)

A gas-liquid dissolving tank comprising: a tank body having an inlet and an outlet for a gas-liquid mixture;
The agitating means has a bottomed cylindrical shape having an opening and a bottom, and the opening is arranged to face the inlet of the tank body with a predetermined gap therebetween. The mixture is caused to collide with the bottom of the stirring means to be stirred, and the outer wall of the stirring means is provided with a plurality of small diameter holes, and the gas-liquid mixture that has collided with the bottom of the stirring means passes through the small diameter holes. During this process, the bubbles are fragmented and flow into the space formed between the tank body and the stirring means. While being discharged from the outflow port of the tank body, the bubbles with a diameter exceeding micrometers rise to the surface and flow again through the opening of the stirring means, so that the stirring is repeated until they are subdivided into micrometers or less in diameter. A gas-liquid dissolving tank characterized by comprising: 2. The gas-liquid dissolving tank according to claim 1, wherein the inner diameter ratio of the inlet of the tank body , the stirring means and the tank body is set to 1 :2:3. 3. The gas tank according to claim 1 or 2, wherein the distance between the inlet of the tank body and the opening of the stirring means is set to be substantially the same as the distance between the inner wall of the tank body and the outer wall of the stirring means. Liquid dissolution tank. 4. The gas-liquid dissolving tank according to any one of claims 1 to 3, wherein the stirring means is made of punching metal.

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