Nippon Roki Co., Ltd.

Roki Techno Co., Ltd.

Mikio Itoh

A filter designed in compact form and requiring low filtration cost, by which there is no need to replace filter each time it becomes clogged and for which no liquid for backwashing is required, and with which is possible to filter under liquid pressure. In the filter, two ends of a filtering segment with a predetermined length of a filter medium in an oblong tube shape are movably and closely squeezed and held by a pair of opposing pressure rollers. A raw liquid introducing pipe is closely squeezed and held between a pair of pressure rollers, a forward end of the raw liquid introducing pipe is disposed within the range of the filtering segment of the tube-like filter medium. The filter medium is moved to the filtering segment constantly or when the filter medium is clogged, and the clogged filter medium is moved beyond the range of the filtering segment.

Filter and filter medium used in said filter

This invention relates to a filter cartridge suited for filtering highly viscous liquid. According to the invention, non-twisted yarn (sliver) and hard linear material such as strongly-twisted material supporting the non-twisted yarn on the core such as to form inter-yarn pores between the non-twisted yarn and hard linear material.

Multi-layer filter cartridge

This invention has an object to provide a cartridge filter which can prevent the interior of a filter housing from being contaminated when paint or ink is filtered. In this invention, a cartridge filter element is contained in a bag-like body or a cylindrical body made of an aqueous non-osmotic film.

Growing community of inventors

Tokyo, Japan

Mikio Itoh