JPH01274814A - Filter for purification - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a purification filter used in a domestic water purification device, which can also be used for commercial purposes to purify water such as bath water, pool water, and water for aquaculture. . 3. Prior Art In conventional purifying filters, fibers are wound around a water-flowing cylindrical core material while forming voids in order to reduce pressure loss and improve purification performance and service life.

When purifying bath water using this purifying filter,
Although the scale can be removed by filtration, the bacteria attached to the scale breeds in a portion of the purification filter, and when fresh water flows in, the problem arises that the bacteria that breeds contaminates the water.

Means for Solving the Problems In order to solve the above problems, the purifying filter of the present invention is as follows:
Repair fibers coated with an insoluble or slightly soluble antibacterial agent,
It has a structure in which it is wound around a cylindrical core material that has water-flowing properties while forming voids.

Effect: With this configuration, the antibacterial agent suppresses the abnormal growth of bacteria in a part of the purification filter, so even if used water is drained and fresh water flows in, the bacteria from the purification filter will prevent it from becoming fresh. water will not be contaminated. Furthermore, since antibacterial agents are insoluble or slightly soluble, they have a long lifespan and can maintain their effects for a long period of time.

On the other hand, purification filters have fibers wrapped around a water-flowing cylindrical core material while forming voids, resulting in low pressure loss and high performance in removing particles even smaller than the filter pore diameter. It also has a long lifespan.

Example FIG. 1 shows an embodiment of the purifying filter of the present invention.

The purification filter 1 has a structure in which a spun yarn is wound around a cylindrical core material 2 with water flowability to form a void.The closer the spun yarn is to the cylindrical core material 2, the more densely the spun yarn is wound around the core material 2. It forms countless long winding water channels. Therefore, it not only has low filtration resistance but also has the advantage of effectively trapping particles smaller than the pore diameter and having a long life.

The filter medium 3 of this purification filter 1 is made of polypropylene,
It is composed of one or more types of spun fibers selected from the group of cotton, polyethylene, acrylic, rayon, cellulose, and nylon. Silver, silver chloride, or chlorhexidine gluconate is added to this filter medium 3.

5-chloro-2-(2,4-dichlorphenoquine)phenol, 3-()rimethoxinlyl)probyldimethylocdanruammonium chloride, copper sulfide, copper, dodecylguanidine hydrochloride, thiabendazole, α-bromucinnamaldehyde, One or more antibacterial agents selected from the group of 2-(3,5-dimethylpyrazolyl)-4-hydroxy-6-phenylpyrimidine and alkyldi(aminoethyl)glynes/hydrochlorides were attached.

A method for attaching an antibacterial agent to the filter medium fibers of the purification filter 1 will be described.

Fibers, water, alcohols, dimethylformamide, perkylethylene, trichlorethylene.

Acetone, methyl ethyl ketone, benzene, toluene,
A method of activating the fiber surface by immersing it in a solvent such as dimethylformamide, dimethyl sulfoxide, or ethyl acetate, and then attaching an antibacterial agent to the fiber surface, including an antibacterial agent, the solvent, and a radical polymerization catalyst such as a peroxide or an azo compound. There are methods such as soaking the fibers in a solution and attaching the antibacterial agent, and processing the antibacterial agent into wire rods.

The amount of antibacterial agent adhered to the fiber material is preferably 0.01 to 5.0% by weight; if it is less than 0.01, the initial performance and durability will be insufficient, and if it is more than 5%, the original wind resistance of the fiber will deteriorate. A problem arose that impairs the quality of the meeting.

On the other hand, the antibacterial agent is attached by impregnating the antibacterial agent into the fiber material and then polymerizing, crosslinking and adhering it by dry heat treatment (80° C. x 3 Hr), steam treatment, and radiation irradiation.

The method of attaching an antibacterial agent to a purification filter is as follows: (1) A purification filter made by winding filter material fibers such as cotton or polyester is coated with chloro-gluconate \xidine' or 3-()rimethoxysilyl) through post-processing. Probil dimethyl ophtadetsuno 1. (2) A method of attaching an antibacterial agent such as ammonium chloride, (2) attaching an antimicrobial agent such as lorhequindine gluconate or 3-(trimethoxysilyl)propyldimethyloctadecyl-γ-ammonium chloride to fibers such as cotton or polyester. (3) Processing silver, silver chloride, or copper into wire rods and winding them together with fibers such as polypropylene to construct purification filters; (4) Copper sulfide There is a method of constructing a purifying filter by winding the attached acrylic fibers together with fibers such as polypyrene. However, in consideration of its workability and durability, the best method was to construct a purifying filter by winding copper wire or fibers coated with copper sulfide together with fibers such as polypropylene or polyester.

FIG. 2 shows an example in which the purifying filter of the present invention is applied to a bathtub. The water purification device 4 was placed in the bath circulation channel Sa+, 6b of the bathtub 5. The water in the bathtub 5 is brought into contact with the purifying filter by the pump 8 via the water flow path (outgoing path) 6b from the inflow lower.

Hair and scale are removed by this purifying filter 1, and water returns to the bathtub 5 from the outlet 9 via the water flow path 6b.

On the other hand, a jet device 10 is installed at the outlet 9, and a flow pipe 1
1, air is blown in by the ejector effect and bubbles are generated. This jet device 10 increases the circulation efficiency of water in the bathtub 5, and purification is performed efficiently.

The effects of the present invention were evaluated using the purification filter shown in FIG. 1 and the water purification device shown in FIG. 2.

The experiment was conducted using 2001 bath waters (40'
C) was purified for 15 minutes at a circulating flow rate of 401/rr+In, the water was drained, and the next day, fresh warm water (40°C9 residual chlorine 0.1-0.2 pprn, 0 bacteria/rnl) was added to the bathtub ( The effectiveness of the present invention was determined by filling the tank with water (200d) and circulating it for 5 minutes, and measuring the number of bacteria in the warm water after 5 minutes of circulation. The results are shown in the table below.

As shown in the table, the present invention was able to prevent bacterial contamination of fresh water. Note that Iwt% of the antibacterial agent is attached to the purification filter.

On the other hand, these purification filters are 4. Ol/mi
A 15-minute purification cycle with a circulating flow rate of n is approximately 1.500
Even after one year of repeated market monitoring, the antibacterial performance and flow rate remained stable for a long period of time with little decline. In particular, the structure in which copper wire was wound with polypropylene fiber, and the structure in which copper sulfide was attached to acrylic fiber and wound together with polyester fiber were excellent in durability.

Furthermore, by using a purification filter with a pore size of 751 zrn, bath water with a turbidity of LO was reduced to a turbidity of 0.3 after 15 minutes of purification, resulting in clean bath water. Also, the pressure loss is 0
．． 02 ki/. . 2 and small.

(Left below) Effects of the Invention As described above, the purifying filter of the present invention uses fibers to which an insoluble or slightly soluble antibacterial agent is attached while forming voids around a cylindrical core material that has water-flowing properties. Because of its rolled configuration, particulates in the water are filtered out, resulting in clean water. On the other hand, bacteria attached to fine particles adhere to the purification filter, but the antibacterial agent suppresses their propagation, so even if used water is drained and fresh water flows in, there will be no bacterial contamination. Because antibacterial agents are insoluble or slightly soluble, they have a long lifespan and remain stable for long periods of time.

Purification filters are constructed by winding a cylindrical core material that allows water to flow while forming voids around it, so it has low condensation loss, removes particulates with high efficiency, and has a long service life.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a purifying filter according to an embodiment of the present invention, and FIG. 2 is a sectional view of an apparatus using the same purifying filter. 1...Purification filter, 2...Cylindrical core material, 3...Filtering material.

Claims (1)

[Claims] (1) The following (1), (2), (3), (4), (5)
, (6), (7), (8), (9), and (10) to which at least one insoluble or slightly soluble antibacterial agent is adhered. A purification filter with voids around the core material. (1) Silver or silver chloride (2) Copper or copper sulfide (3) Chlorhexidine gluconate (4) 5-chloro-2-(2,4-dichlorophenoxy)phenol (5) 3-(trimethoxysilyl)propyl Dimethyloctadecylammonium chloride (6) Dodecylguanidine hydrochloride (7) Thiabendazole (8) α-bromucinnamaldehyde (9) 2-(3,5-dimethylpyrazolyl)-4-hydroxy-6-phenylpyrimidine (10) Alkyl di(
Aminoethyl)glycine hydrochloride (2) Fibers to which an antibacterial agent is attached are wound tightly as they approach the cylindrical core material, thereby forming countless long winding channels toward the cylindrical core material. Purification filter in item 1. (3) The purifying filter according to claim 1, wherein the fiber to which the antibacterial agent is attached is at least one selected from the group consisting of polypropylene, cotton, polyester, acrylic, rayon, cellulose, and nylon. (4) The purifying filter according to claim 1, wherein the antibacterial agent-attached fibers are wound together with at least some fibers selected from the group of polypropylene, cotton, polyester, acrylic, rayon, cellulose, and nylon. (5) The purifying filter according to claim 1, wherein the antibacterial agent is copper or copper sulfide.