JPS5854187Y2 - Gas-liquid contact device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for bringing gas and liquid into contact, such as an aeration apparatus.

Conventionally, one such gas-liquid contact device includes a rotating cylinder whose upper end is closed so that its central axis is perpendicular to the liquid with which the gas is to be brought into contact, and the rotating cylinder is rotated around its central axis. A driving mechanism for rotating the rotating cylinder and an air supply pipe for supplying gas into the rotating cylinder are provided, and the gas flowing into the liquid from the lower opening edge of the rotating cylinder is formed into microbubbles, so that the gas can be transferred to the liquid with a large specific contact area. There is one that allows you to make contact.

However, in such a device, the outer peripheral surface of the rotary tube and the outer surface of the top and bottom walls are in contact with the liquid, so there is a large resistance to the rotation of the rotary tube, and a high-output drive mechanism must be used, resulting in low energy consumption. The disadvantage is that the quantity is large.

This disadvantage is particularly noticeable when the liquid is highly viscous.

The gas-liquid contact device of the present invention is designed to eliminate the following drawbacks, and consists of a cylindrical body with one end closed, which is disposed in a liquid with which a gas is to be brought into contact. an air chamber-forming container, the lower portions of which are spaced apart from each other so that their axes are perpendicular to each other in the air chamber-forming container; an air chamber formed between the air chamber forming container and the rotating cylinder; a drive mechanism for rotating the rotating cylinder around its axis; and a gas entering the liquid from the lower edge of the rotating cylinder. a gas supply mechanism for supplying gas into the air chamber to release gas, the gas supply mechanism being connected to the rotating cylinder and a fan for forming an airflow from above to below;
The air chamber is characterized by being formed by an intake pipe communicating between the air chamber and an external gas source.

Embodiments of the present invention will be described below with reference to the drawings.

In the present invention, as shown in the figure, a motor 3 is provided at the inner bottom of a container 1 so that its drive shaft 2 is vertical, and the drive shaft 2 has an opening only at the lower end and an upper end. The closed rotary cylinder 4 is fixedly supported so that the drive shaft 2 is aligned with its central axis.

Further, a fixed cylinder 5 having an inner diameter slightly larger than the outer diameter of the rotary cylinder 4 and whose upper end is closed is attached to the container 1 by means of support legs 6 so that the rotary cylinder 4 is inserted from between its lower ends. The inner peripheral surface of the fixed cylinder 5 and the inner surface of the upper bottom wall are spaced apart from and opposed to the outer peripheral surface of the rotary cylinder 4 and the outer surface of the -L bottom wall, respectively, and the lower part of the rotary cylinder 4 is It is positioned below one end of the fixed cylinder 5.

Then, a gas source outside the container 1, for example, the tip of the intake pipe 7 extending from the outside world is positioned within the fixed cylinder 5.

Further, a fan 8 of an arbitrary shape is attached to the outer surface or outer peripheral surface of the upper bottom wall of the drive shaft 2 or the rotary tube 4 to form an airflow from above to below.

Incidentally, a small hole is provided in the upper bottom wall of the rotary cylinder 4.

Since the gas-liquid contact device of the present invention has the above-described configuration, when the rotating cylinder 4 is rotated, the liquid in the fixed cylinder 5 is pushed down by the action of the fan 8, and the gas is transferred from the intake pipe 7 to the rotating cylinder. The air is sucked into the space 9 between the rotary cylinder 4 and the fixed cylinder 5, and an air layer is formed there, and the outer surface of the rotating cylinder 4 except for the lower part is covered with the front air layer, and as a result, the drive shaft 2
This makes it possible to significantly reduce the resistance to the rotation of the rotary cylinder 4, and even if a motor 3 with a low output is used, the required rotational speed can be obtained.

Then, the gas absorbed through the intake pipe 7 fills the fixed cylinder 5, and then flows out from the F-end opening edge of the fixed cylinder 5 into the liquid as microbubbles due to the rotation of the rotating cylinder 4, and the gas and liquid are separated. Contact is achieved.

That is, according to the device of the present invention, since the fan 8 is used, the intake pipe 7
Air can be introduced into the fixed cylinder 5 without using a special suction mechanism such as a pump, and this air is introduced into the rotating cylinder 4 through the pores provided in the upper bottom wall of the rotating cylinder 4. There is the benefit of further increasing contact between gas and liquid.

In addition, in the illustrated example, air bubbles from the rotating cylinder 4 reach the fixed cylinder 5.
In order to assist the air bubbles to expand and rise outward from the cylinder and to further reduce the size of the bubbles, an outwardly expanding flange]O is provided at the lower end of the rotary cylinder 4 and brought close to the lower edge of the fixed cylinder 5. Can be done.

In the present invention, instead of fixing the motor 3 to the inner surface of the L bottom wall of the fixed cylinder 5 as shown in the drawings, it may be provided on the outer surface of the upper bottom wall or below the rotating cylinder 4.

As described above, the gas-liquid contact device of the present invention has an extremely simple configuration, which makes it possible to significantly reduce the resistance to the rotation of the rotary cylinder, making it possible to reduce the size of the device required to drive the cylinder, and to reduce the amount of energy consumed. Benefits include being able to reduce the amount of gas and liquid, and achieving sufficient contact between gas and liquid.

[Brief explanation of the drawing]

The figure is a sectional view for explaining one embodiment of the gas-liquid contact device of the present invention. 1... Container, 2... Drive shaft, 3...
...Motor, 4...Rotating tube, 5...
Fixed tube, 7...Intake pipe.

Claims (1)

[Scope of utility model registration request] An air chamber forming container consisting of a cylindrical body with its upper end closed and placed in a liquid with which gas is to be brought into contact; and spaced apart from each other so that the axes of the air chamber forming containers are vertical. a rotary cylinder whose lower part extends beyond the lower end of the air chamber forming container and which has a pore in its upper bottom wall; an air chamber formed between the air chamber forming container and the rotating cylinder; It consists of a drive mechanism for rotating the rotary cylinder around an axis, and a gas supply mechanism that supplies gas into the air chamber to release gas from the lower end edge of the rotary cylinder into the liquid. A gas-liquid contact device comprising: a fan connected to a fan for forming an airflow from above to below; and an intake pipe communicating between the air chamber and an external gas source.