Liquid purification or separation – Magnetic
Patent
1996-08-27
1999-11-23
Reifsnyder, David A.
Liquid purification or separation
Magnetic
21050023, 21050025, 210504, 210506, 55523, 55524, 96 1, 264451, 264 70, 264125, 264402, 264407, 264413, 264628, 264629, 264632, 264DIG48, 427127, 427128, 427244, 427245, B01D 3506, B01D 3900, B06B 300, C04B 35622
Patent
active
059894202
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a porous ceramic filter of high performance and high capability for removing organic and inorganic impure substances, polluted (harmful) substances, nastily-smelled substances and the like from a liquid containing these substances, and more specifically, for obtaining clean drinking water and clean water by filtrating organic substances and inorganic substances from water polluted by them such as tap water, river water, seawater, swimming pool water, water drained from factories and houses, and the like or obtaining beer, wine, Japanese sake, soy sauce, sauce, juice, fruit juice, cooking oil and the like by filtrating various solid substances and impurities therefrom, a method of manufacturing the porous ceramic filter, an extrusion molding die used to manufacture the porous ceramic filter and an extrusion molding apparatus provided with the die.
Further, the present invention relates to a porous ceramic filter provided with a functional property and a method of manufacturing it.
BACKGROUND ART
Conventionally, there have been proposed and used many types of filtrating apparatuses for filtrating various polluted substances, smelled (nasty) substances and impurities which are unsuitable for drinking to obtain drinking water from river water, seawater and drained water. Further, there are commercially available water purifying devices and the like for removing a nasty smell (foul smell) and a bad taste caused by organic substances, inorganic substances and the like contained in well water and tap water in a slight amount. Many of the water purifying devices use a filter unit.
Additionally, a filtrating process is indispensable to food industries to remove solid substances and impurities from fermented products for making beer, wine, Japanese sake, soy sauce etc. and to remove solid substances and impurities to obtain sauce, juice, fruit juice, cooking oil etc. from a food material.
In particular, since drinking water, liquors, fruit juice, juice, sauce, cooking oil etc. are used for drinking or eating, a very high performance is required of a purifying apparatus, thus a high performance is also required of a filtrating device.
Further, with the recent fitness boom, many persons enjoy swimming as an exercise of every part of the body regardless of age and sex and the number of persons visiting swimming pools is increasing.
With this trend, there is an increasing interest in the sanitary state of the swimming pool and in particular in the quality of water to enjoy swimming more safely and sanitarily. Thus the requirements for a purifying apparatus by which the quality of water in the swimming pool is established is made more and more strict and thus the performance of a filtrating device used meet this requirement must be of the highest level.
Further, filtrating devices are now being widely used in processing water from a low purity level to a high purity level in such fields as the water purification in zoos, aquariums and the like, the pre-processing in the manufacture of pure water used for the production of semiconductors and the desalination of seawater, the quahouse and 24-hour open bath, water processing for an intermediate water supply, decolorization processing required by the environmental standards and the like.
Many porous ceramic filters are used as the filter element of the filtrating apparatus. The porous ceramic filter (hereinafter, referred to as a ceramic filter) has very fine three-dimensional filtrating spaces (holes) which are very preferable to the filtration of water in the swimming pool and in particular in the warm water swimming pool and can preferably filtrate organic substances such as oil and the like, structures, protein, bacteria, viruses and the like discharged from human bodies.
The purifying capability of a ceramic filter is determined by the size of micropores used in filtration, wherein the smaller the micropore size, the more excellent the purifying capability of the filter. Further, when the ease of cleaning the filter b
REFERENCES:
patent: 4279748 (1981-07-01), Inoue
patent: 4728503 (1988-03-01), Iida et al.
patent: 5068068 (1991-11-01), Furusawa et al.
patent: 5098571 (1992-03-01), Maebashi
patent: 5558760 (1996-09-01), Sekhar
Reifsnyder David A.
Yuugengaisya Mama Green Golf
Yuugengaisya Mikazuki Bunkakaikan
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