JPS60107Y2 - Diffusion material for underwater aeration - Google Patents

Description

[Detailed description of the invention] The present invention relates to an aeration material used to diffuse numerous microscopic bubbles in water, and is mainly used as an aeration material for supplying oxygen in fish ponds, or as an aeration material using air bubbles. This invention relates to an air diffuser for face washing in a face washing device.

Conventional air diffusers (diffuser plates, air diffuser tubes, etc.) use open-pore porous bodies (hereinafter referred to as porous bodies) made of ceramic, sintered plastic powder, or foamed plastic. Each part of the diffuser body had exactly the same physical properties, and each part of the diffuser had the same contact angle (same water wettability) with respect to liquid (water). .

In general, porous bodies made of objects with a small contact angle with water (ceramics, vinyl acetate, partially acetalized polyvinyl alcohol, etc.) are hydrophilic (water-wettable); It has very good water permeability and water permeability, and when an air diffuser made of such a material is installed underwater and air passes through it, it is difficult to see if a water repellent (large contact angle) air diffuser such as Teflon is used. Generates countless microscopic bubbles.

As a result, the efficiency of (oxygen) dissolution into the water in the fishpond is improved, and the facial cleansing device using air bubbles has a very large cleaning effect.

However, when such a conventionally used air diffuser with good water wettability is used in a face wash, for example, when the air supply from the blower installed at the bottom is stopped, cleaning sewage flows into the pores of the air diffuser. (scum, fat, etc.) easily permeates through the air diffuser and into the air chamber below the air diffuser and into the air pipe, and is pushed out again through the fine pores of the air diffuser when air is re-supplied when the next use starts. In addition to clogging of small pores due to floating/suspended substances in the sewage, washing sewage may adhere to the air chambers of bubble facial cleansers and the inner walls of air pipes, causing harmful microorganisms such as mold and bacteria to grow. There were some easy drawbacks.

In order to prevent these drawbacks, the conventional face wash using air bubbles has a blower 1 inside the hood 6, as shown in FIG.
In order to prevent water from entering into the hood, a water inflow prevention structure (check valve or folded double air pipe 8 in the hood above the water level) is provided to prevent water from entering into the hood. A plug for draining the incoming water was provided at the top of the tank 6, and an air diffuser 9 was detachably attached to facilitate internal cleaning.

However, this conventional face wash has a complicated structure and is not economical. In addition, the air diffuser tends to leak in the air, and it is insufficient to prevent the generation of harmful microorganisms in the air chamber. there were.

The present invention improves the structure of the conventional facial cleansing device using air bubbles, and makes it possible to improve the practical and economical facial cleansing device without providing a structure to prevent water from flowing in. The purpose of the present invention is to provide the air diffuser with an air diffuser that can prevent air pollution caused by filth.

Figure 1 shows an example of a face wash using a conventional air diffuser, in which an electric blower 4 having an air outlet 3 is built into a blower storage cover 2 with an air intake port 1 at the bottom. A hood 6 for containing washing water is placed on the upper part of the storage cover 2 and is joined by a threaded part 7.

In addition, a folded double air pipe 8 is provided in the hood 6 so as to be always located above the upper end of the hood so that the water level in the hood is higher than the water level, and its tip is connected to the air chamber 5. ing.

Furthermore, the hydrophilic disk-shaped air diffuser 9 is sandwiched between rubber packings 10 and is detachably attached to the upper part of the air chamber 5 in the hood at a threaded portion 12 using a retaining ring 11.

Note that 13 is a plug for draining the incoming water.

The facial cleansing device using air bubbles having the above-described structure sends gas into the air chamber 5 by air from the blower 4, and the gas is passed through the diffuser and into the liquid in the hood 5. It diffuses air as fine bubbles, and by bursting the diffused air bubbles and vibrating collisions, it bursts and exfoliates dirt, excess fat, and waste from the face and pores, providing a cleansing effect and at the same time exerting a pine surge effect. do.

However, when the air supply is stopped after cleaning, the cleaning wastewater easily permeates through the air diffuser 9 and flows into the air chamber 5 and the double air pipe 8 because the air diffuser is hydrophilic. It reaches the water level inside the hood.

For this reason, it is necessary to open the drain valve and drain the waste water after each use, and even after draining the water, some of the washed waste remains attached to the inner walls of the air chamber 5 and the double air pipe 8, where harmful microorganisms are present. Not only did this cause the occurrence of air pollution, but it also caused irradiation of the air diffuser 9.

Figures 2 and 3 show examples of the air diffuser of the present invention, of which Figure 2 shows the lower part 16 of the plate-like air diffuser 14 (which carries gas Water repellent (large contact angle with water)
The upper part 15 is the aeration surface part on the side where the introduced gas is made into bubbles and diffused into the water.

To impart water repellency, a known water repellent such as silicone resin, emulsified fluorine resin, or chlorinated paraffin is added to the hydrophilic air diffuser 14.
This can be done by spraying or brushing the lower part of the water repellent, or by dipping only the lower part 16 into a water repellent.

The degree of water repellency can be freely adjusted by changing the type and concentration of the water repellent and the thickness of the water repellent layer.

Reference numeral 17 denotes a rubber gasket in which the air diffuser 14 is sandwiched.

FIG. 3 shows another embodiment of the present invention, which is a two-ply composite air diffuser.

In other words, 18 is an air diffuser 14 having conventional hydrophilic properties.
The lower part 19 of the air diffuser 14 is made of the same material as the upper part 18, which is the air diffuser surface part, and the entire surface of the air diffuser 14 is immersed in a water repellent to make it water repellent. They are overlapped as surface parts.

Of course, the lower part 19 of the aeration material 14, which is the gas inlet surface part, may be made of a different material from the upper part 18 of the aeration material 14, which is the aeration surface part.

For example, the upper part 18 can be made of a hydrophilic porous material made of polyvinyl acetate (contact angle 68°), and the lower part 19 can be made of a water-repellent porous material made of Teflon (contact angle 98°). The degree of water repellency can also be improved by applying water repellent treatment two or more times.

In this case, it is also possible to increase the water repellency (water permeation/water permeation prevention property) by increasing the thickness of the lower part 19 or decreasing the diameter of the pores.

Note that the shape of the air diffuser 14 is not limited to a plate-like body, and in the case of a tube or dome-shaped air diffuser, the air diffuser surface portion remains hydrophilic, and the gas inlet surface portion is made water repellent. This should also be included in the technical scope stated in the claims of the utility model registration of the present invention.

As described above, when using the aeration material of the present invention, the supplied air (gas) becomes countless microscopic bubbles from the surface of the hydrophilic aeration material that comes in contact with water, and is diffused into the water, allowing fish ponds, etc. In facial cleansers that use air bubbles, the effectiveness of the air blower can be effectively utilized as the cleaning and pine surge effect increases due to the bursting of fine air bubbles.

In addition, when the air blowing is stopped, the sewage that has permeated the hydrophilic aeration material on the aeration surface is blocked and waterproofed by the water-repellent aeration material on the gas inlet surface, so the pores of the aeration material are blocked. It can prevent clogging and the generation of harmful microorganisms such as mold on the inner walls of the equipment.

Furthermore, by using the air diffuser of the present invention, it is no longer necessary to remove the air diffuser to clean the inner wall of the equipment and drain the sewage water, as in the conventional case.

Furthermore, the present invention is highly practical as it eliminates the need to provide a water check valve device or a stopper for draining water, and is also of great economic value.

[Brief Description of the Drawings] Fig. 1 is a longitudinal cross-sectional view of a conventional facial cleansing device using air bubbles, and Figs. 2 and 3 are longitudinal cross-sectional views of a rubber gasket sandwiched between the air diffuser of the present invention. It is a front view. 14... Diffusing material, 15, 18... Diffusing surface portion having hydrophilic properties which is the upper part of the diffusing material, 16, 19
. . . Water-repellent gas inlet surface portion which is the lower part of the air diffuser, 17 . . . (rubber) backing.

Claims (1)

[Scope of utility model registration request] In a porous body consisting of a gas inlet surface portion on the side where gas is introduced from the outside and an aeration surface portion on the side where the injected gas is made into bubbles and diffused into water, the gas inlet surface portion is made water repellent. An aeration material for underwater aeration, characterized in that the aeration surface portion is made hydrophilic.