JP3417460B2 - Hypochlorous acid proportional mixing water purifier - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mainly intended for an unspecified number of ages and races such as airplanes and ships, and also when the hygiene control conditions of the handler, region, piping, and faucet are different. The present invention relates to a water purifier that suppresses sterilization or growth of pathogenic bacteria, microorganisms, general bacteria and the like contained in drinking water and ensures safe, hygienic and highly clean water.

[0002]

2. Description of the Related Art Conventionally, in an aircraft or the like, a cylindrical block-shaped filter and a granular activated carbon cartridge are provided for removing odors of scaly and musty.

However, the bacteria in the water purifier that have flowed out into the pipeline or the bacteria that invade from the faucet multiply during the parking and are often found by quarantine upon entry into the country, causing problems. I had no choice but to stop installing water purifiers for purification services.

Further, in order to prevent the growth of various bacteria due to the installation of such a water purifier, a bypass with a small diameter is used, or the packing density is reduced to reduce the hypochlorous acid removal rate, so that the purified water has a low concentration Although there has been a history of studying measures to secure chlorous acid, in aircraft, the raw water pressure is not constant and the mixed concentration changes due to differences in speed during parking and flight. It has no property and has not been put to practical use.

[0005]

Therefore, according to the present invention, human beings do not perceive the taste of the purified water that has passed through the activated carbon layer to remove hypochlorous acid and lose the bactericidal effect. Capillary phenomenon by crushing a small amount of raw water containing hypochlorous acid that does not pass through the activated carbon layer into woven or non-woven fabric or crushing them into cotton, sandwiching them with a cartridge cap, and compressing to achieve the desired concentration that can be maintained. By providing a permeation layer of raw water by, and making the ring-shaped crushed cotton etc. protrude inside, contact with purified water flowing out from the through passage in the center of activated carbon,
An object of the present invention is to provide a water purification cartridge capable of mixing purified water with hypochlorous acid in raw water.

Another object of the present invention is that the concentration of hypochlorous acid is not affected by the pressure of the raw water, and the raw water that permeates a layer such as crushed cotton only by capillary action is mixed in proportion to the flow rate of the purified water. The present invention provides a water purification cartridge that can always maintain a desired concentration range of hypochlorous acid even if the pressure of raw water changes.

Another object of the present invention is to:
In order to prevent clogging of the passage layer due to foreign matter in the raw water, use a crushed product such as a nonwoven fabric obtained by needle punching a cotton-like product without heat welding to the compressed fiber layer. The present invention provides a water purification cartridge that can be stably permeated and that can mix a desired amount of hypochlorous acid in raw water with purified water.

Still another object of the present invention is to provide a water purification cartridge in which a chemical fiber cotton which does not swell or corrode under the influence of hypochlorous acid in the raw water is compressed and used as a permeation layer of the raw water. To do.

Still another object of the present invention is to use a positively charged fiber to adsorb or filter foreign matters that are generally negatively charged, and mix it into purified water. This is to provide a water purification cartridge that can prevent

[0010]

[Means for solving the problem] That is, extra fine, disk-shaped crushed cotton, non-woven fabric, etc. are installed on the top and bottom of an activated carbon filter molded in a solid cylindrical block, and tightened with screws on the upper and lower caps and the water discharge pipe that penetrates the filter. Compress it,
By forming a permeation layer that is not affected by the pressure of raw water by only a capillary phenomenon, immersing the permeation layer in the flow of purified water and contacting it, mixing the permeation water of the raw water into the purified water, and proportional and constant even if the flow rate of the purified water changes It is characterized in that the concentration of hypochlorous acid in the raw water can be obtained, and while improving the taste as purified water, it has a sterilizing effect on the inside of the water purifier, the pipeline and the faucet. .

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on embodiments with reference to the drawings. FIG. 1 shows the entire cartridge of the present invention, in which an activated carbon filter 1 is a fine mesh of activated carbon of 100 mesh under, Kobushi clay and 1/3 each of which is kneaded in a high speed mixer,
It is a unglazed cylindrical filter obtained by granulation, press molding and firing. The caps 2 and 3 are formed by cutting screws 4 and 5 in the central part and fitting them into the upper and lower sides of the activated carbon filter 1. The crushed cottons 6 and 7 match the shapes of the caps 2 and 3 on the upper and lower end surfaces of the activated carbon filter 1, and the center is hollowed out into a circular shape.
And the caps 2 and 3 are tightened by screws 4 and 5, and compressed and held in a raw water passage having a narrow gap (not shown).
Further, the water discharge pipe 8 has an opening 11 for purified water.

Tap water enters from the entire outer circumference 12 of the activated carbon filter 1, reaches the cylinder 13, passes through the inflow port 11, and is discharged from the outflow port 14.

At that time, the raw water pressure is also applied to the crushed cottons 6 and 7, but the fiber density is increased by the expansion of the activated carbon filter 1 which is strongly compressed by the caps 2 and 3 and the screws 9 and 10. The permeation loss of the raw water is so high that it is not discharged more than the permeation amount due to the capillary phenomenon between the fibers. The activated carbon filter 1 was replaced with a resin having no pores, and the raw water pressure was applied to check whether or not water was discharged, but the amount could not be measured.

Therefore, even if the amount of purified water changes depending on the pressure of raw water and the amount of purified water changes due to filter clogging,
The amount of penetration does not change.

When the raw water is mixed with the purified water, the raw water that has permeated the upper and lower terminals 15, 15 of the cylinder 13 comes into contact with the turbulent flow of the purified water in the gaps 16, 16 in which the raw water has taken a large amount, and is caught in the turbulent flow, together with the purified water. , 11 to the outlet 14.

Since a turbulent flow or a suction flow is generated inside the cylinder 13, the inlet 11 of the water discharge pipe 8 has upper and lower terminals 15,
The purified water in the gaps 16 and 16 was surely convected to be close to the gap 15, and the effect of extracting the permeated raw water from the crushed cottons 6 and 7 protruding into the gaps 16 and 16 was obtained.

The general concentration of hypochlorous acid in raw water is about 0.1 ppm to 2.0 ppm in the world,
If it exceeds 0.4 ppm, the taste may be significantly impaired and odor may be caused. The regulation value for the purpose of maintaining the bactericidal effect at home and abroad is 0.1 ppm or more, and at such a concentration, almost no taste is felt, so in order to achieve both the bactericidal effect and the taste. , It suffices if it is close to this concentration. However, in an aircraft, since the raw water pressure changes, it is difficult to perform proportional mixing even through a minute opening, and clogging by foreign matter is likely to occur.

Therefore, in the embodiment, the raw water is approximately 10
It was confirmed that the concentration of hypochlorous acid was%, clogging of foreign matters was not so large, the permeation amount did not change stably for a long period of time, and sufficient permeation amount could be supplied to the range of permeation amount of purified water. The non-woven fabric is crushed and needle punched to a cotton-like thickness of about 1 mm, the fiber thickness is 1.5 to 2.0 denier, and the weight is 100 g per square meter. Activated carbon filter 1 that uses a non-heat-welded material that does not become an obstacle to the phenomenon
It was punched out according to the end face of the above, installed up and down, and caps 2 and 3 were tightly tightened by hand with the water discharge pipe 8.

Crushed cotton was tested for a fiber thickness of 1.0 to 5.0 denier and a weight per square meter of 50 to 300 g, but practically 1.0 to 3.0 denier and a weight per square meter. The effect was confirmed up to 50 to 200 g.

Originally, torque control is required for tightening, but since the activated carbon filter 1 expands after being impregnated with water, it is difficult to measure the torque accurately, and even without torque control, The change in fiber density of the crushed cotton due to the additional compression due to the expansion of activated carbon did not vary so much when the concentration of hypochlorous acid was measured.

Table 1 shows the correlation between the raw water pressure, the amount of purified water and the concentration of hypochlorous acid in the purified water.

[0022]

[Table 1]

As a result, desired values could be obtained from low concentration of raw water to average concentration of sample water. The lower limit value is 0.1 ppm, but if the residence time is long, 0.01 ppm can be expected to have a bactericidal effect.

Table 2 shows the effects on general bacteria and Escherichia coli from the samples taken every hour.

[0025]

[Table 2]

In this case, the limit could be set to 0.01 ppm. In other words, the water supplied to the aircraft is always tap water, and since it is sealed by a water faucet and shielded from the air, it can be assumed that various bacteria will not normally grow over the course of several hours. This is because even if the concentration of purified water is low, a bactericidal effect will be produced.

When woven cloth is used, it is thicker than thin,
The fiber was twisted, and the result that the thin one was easy to control was obtained.

In a similar non-woven fabric that was heat-welded, in an accelerated test using raw water containing a large amount of suspended solids, as the integrated amount increased, clogging occurred, and the mixing of raw water became non-proportional, reducing the effect.

The cap 2 is simply used regardless of the non-woven fabric or the like.
It was found that the one in which 3 was fixed by crimping was difficult to control for each pressure and the versatility was poor.

FIG. 2 is an application example of a case of a cartridge made of compressed granular activated carbon, and the same effect can be expected by applying a nonwoven fabric to the inner surface of the cylinder against the inflow of raw water from above or below.

[0031]

EFFECTS OF THE INVENTION According to the present invention, the raw water obtained by mixing only the capillary phenomenon from the compressed permeation layer such as the crushed cotton set in the narrow gap between the activated carbon filter and the cap with the purified water flowing out. Regardless of the pressure, the actual profit is needed to obtain the concentration of hypochlorous acid in the raw water that is proportional to the amount of purified water. In addition, if the hypochlorous acid in the raw water is above the specified value, the concentration of hypochlorous acid mixed in the purified water is low enough to be perceived by human taste, and it is necessary to obtain purified water that can maintain the bactericidal effect. Have the real benefit of being able to

[Brief description of drawings]

FIG. 1 is a cross-sectional view illustrating an example.

FIG. 2 is a sectional view illustrating another embodiment.

FIG. 3 is an engagement diagram with a container including a partial cutaway portion in the present embodiment.

[Explanation of symbols]

1 activated carbon filter 2 cap 3 caps 4 screws 5 screws 6 crushed cotton 7 Crushed cotton 8 spout pipe 9 screws 10 screws 11 Inlet 12 Outer peripheral surface 13 cylinder 14 Outlet 15 terminals 16 Gap 17 Peripheral nonwoven fabric

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI C02F 1/50 550 C02F 1/50 550B 560 560B (56) Reference JP-A-61-97095 (JP, A) -70186 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) C02F 1/28 B01J 20/00-20/34 B01D 35/00-35/04 B01D 35/08-35 / 30

Claims (2)

(57) [Claims] 1. A granular, powdery or fibrous activated carbon alone or a kneaded product or granulated product using a mixture thereof and clay or a resin as a binder is molded into a porous activated carbon cylindrical filter , and the activated carbon cylindrical filter A circular woven fabric or a nonwoven fabric whose fiber density is variable by pressing is applied to one of the upper and lower ends or one of the end faces with a cotton-like product made by needle punching crushed cotton obtained by crushing it , and then the cotton-like shape. The product and the activated carbon cylinder covered with a resin or metal cap.
Insert a cotton-like product between the filters and compress it to remove the capillary.
Cylindrical filter with activated carbon provided with a permeation layer of raw water
Osmotic was densified by compression to increase the fiber density of the cotton-like product by tightening the upper and lower cap by two screws of the water discharge pipe inlets and opening through the cylinder in which hollow in the center over
The ends of the layered annular crushed cotton squeeze out into the gap, and the raw water from only the permeation amount due to the necessary and sufficient capillary phenomenon is discharged.
Discharge pad of purified water that flows out from the gap facing the inside of the water pipe.
Ring-shaped crushing that spilled into the gap in the running water
The permeated raw water that has been soaked in cotton is mixed with the purified water by contact in the gap, and even if the raw water pressure changes, it always contains a constant amount of hypochlorous acid in the raw water proportional to the suction amount of the purified water into the discharge pipe. A hypochlorous acid proportional mixing water purifier characterized by being able to obtain purified water. 2. By using a recycled non-woven fabric obtained by crushing a polypropylene non-woven fabric having a thickness of 1.0 to 3.0 denier and a range of 50 to 200 g per square meter, a closed path can be obtained even after long-term use. The hypochlorous acid proportional mixing water purifier according to claim 1, wherein the desired amount of raw water can be mixed with the purified water without forming a permeation amount and without constantly changing the permeation amount.