JPS61111188A - Water purifier for tap - Google Patents

Abstract

PURPOSE:To prevent the generation of bacteria when the titled purifier is equipped to a city water tap by housing a granular ascorbic acid substance and activated carbon in a water purifying part as a filter, and providing a perforated supporting plate to prevent the flowing out of the filter by the flowing water. CONSTITUTION:An ascorbic acid substance 5 (e.g., ascorbic acid and sodium ascorbate) and activated carbon 6 are housed in a water purifying part 1 in a small-sized water purifier to be equipped to the tap of city water, and perforated supporting plates 2 and 3 are provided to prevent the flowing out of the filter by flowing water. The water purifier is small-sized, and can be easily equipped to the tap of city water. Besides, the generation of bacteria can be prevented by the purifier. The free chlorine in city water can also be removed, and the water is made tasteless.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a water purifier attached to a tap, and more particularly to a water purifier for a faucet suitable for removing free chlorine, etc. from tap water.

[Background of the invention]

In recent years, tap water in Japan has become highly sanitary and safe, and does not cause any infectious diseases.

This is because the chlorine gas added to tap water at a water treatment plant is not free chlorine, and even the buttons inside the pipes are sufficiently disinfected.

However, free chlorine has a disadvantage in that it has a unique odor and taste, which impairs the taste of water. For this reason, it has been proposed to install activated carbon filters on water faucets. In addition, as a special method, there is a water purifier such as the one shown in Patent Publication No. 59-25631, in which water is introduced from an upper container into a rotating filter using centrifugal force, and the water is passed through a filter on the side wall of the filter. . Although such a device has already been put into practical use, it has the drawback that it is large and bacteria can grow if water is retained in the filter for a long time.

[Purpose of the invention]

An object of the present invention is to provide a small water purifier that can be easily attached to a water faucet and that does not generate bacteria.

[Summary of the invention]

The inventor first studied books that make water taste bad, and found that free chlorine has the greatest effect, but other organic substances, metals, etc. also have an effect.

Previous systems used large amounts of activated carbon to remove this free chlorine.

Therefore, the inventor thought of using the previously proposed ascorbic acid-based substance because it effectively decomposes free chlorine in a small amount. First, ascorbic acid was used as a filter, but it quickly absorbed water and was difficult to use. Therefore, when ascorbic acid was made into granules using cellulose by a conventional method, the water resistance was significantly improved. A simple water purifier was created using this to allow tap water to pass through, and it was used as a filter, but this water purifier had the drawback that when water was run through it, the ascorbic acid in the filter dispersed, making it less effective. Therefore, it was discovered that by installing retaining plates above and below the filter to retain this ascorbic acid, diascorbic acid could be reliably filtered without being dispersed by running water. Furthermore, we discovered that organic matter in tap water can be adsorbed using a small amount of activated carbon. In addition, unlike tank-type devices, this device does not accumulate large amounts of water for long periods of time, so there is less bacteria generation.Furthermore, it was discovered that ascorbic acid decomposes oxygen, so it does not generate aerobic bacteria, and the present invention was completed. did.

[Embodiments of the invention]

Examples of the present invention will be described below.

As shown in Figure 1, in a plastic container with a height of about 10 cm and a diameter of about 5 crrL, about 8 g of ascorbic acid 5 granulated using cellulose in a conventional manner and about 12 g of activated carbon 6 were placed as filters. Attach a plastic plate 2.3 with holes to prevent ascorbic acid and activated carbon from passing through to hold the filter in place.

The water that passes through this device by attaching it to a faucet has a taste,
It was in good condition with no odor. However, since there is an error in human sense, the amount of free chlorine was determined using orthotolidine as an indicator. (Although orthotolidine is colorless, it takes on a yellow color in the presence of free chlorine.) The results are shown in Table 1.

Table 1 As shown in Table 1, according to the present invention, free chlorine can be easily removed and tap water can be made tasteless.

Ascorbic acid is vitamin C, so there are no problems with using it.

Also, sodium ascorbate has similar properties. This is also used as a vitamin C fortifier, and there are no problems with its use.

〔Effect of the invention〕

As explained above, the present invention is effective in removing free chlorine from tap water and making it tasteless.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of the present invention. 1-Water purification section, 2.3--Plastic retainer, 4-Water faucet, 5--Ascorbic acid in the form of granules, 6-Activated carbon.

Claims (1)

[Scope of Claims] 1. A small water purifier that is attached to a water faucet, in which a granular ascorbic acid-based substance 5 and activated carbon 6 are incorporated as a filter in the water purifying section 1, and the filter is designed to prevent water from flowing out due to running water. A water purifier for a faucet, characterized in that holding plates 2 and 3 with holes are installed. 2. A water purifier for a faucet according to claim 1, characterized in that the granulated ascorbic acid-based substance is water-resistant granulated ascorbic acid. 3. A water purifier for a faucet according to claim 1, wherein the granulated ascorbic acid-based substance is water-resistant granulated sodium ascorbate.