Ishigaki Company Limited

Kunio Fujita

Hidetaka Ujike

Eiichi Ishigaki

Masayoshi Katayama

Takahiko Ishimaru

Fumikatsu Nagai

Masafumi Nasu

Tooru Mori

A filter medium includes: a core yarn and a binder yarn twisted together, at least one of the core yarn or the binder yarn being weldable; and a filament yarn being fuzzy and weldable, the filament yarn being welded to at least one of the core yarn or the binder yarn while being placed between the core yarn and the binder yarn as twisted together. A filtering device for filtering a liquid to be treated with a filter medium layer includes the filter medium. A method of manufacturing the filter medium is also disclosed.

Filter medium, filtering device using filter medium, and filter medium manufacturing method

A filter medium layer includes filter media configured to capture suspended solids contained in a liquid to be treated and filtering aids configured to allow the suspended solids contained in the liquid to be treated to pass through the filtering aids. The filter media and the filtering aids are mixed together and the liquid to be treated is filtered by being passed through the filter media and the filtering aids as mixed together. A filter device includes the filter medium layer and a filter tank configured to accommodate the filter medium layer.

Filter medium layer and filter device provided with same

A continuous compression-type dewatering apparatus has a filter chamber ( ), a drive shaft ( ), a vane ( ), and a supply path ( ). The filter chamber ( ) is delineated by an annular plate ( ) and two side plates ( ). The drive shaft ( ) passes through the center axis of the annular plate ( ) and through the inside of the filter chamber ( ), and is free to rotate with respect to the filter chamber ( ). The vane ( ) is disposed within the filter chamber ( ), is fixed with respect to the drive shaft ( ), and rotates in concert with the drive shaft ( ). The supply path ( ) passes through the drive shaft ( ) and supplies raw fluid to the filter chamber ( ). The vane ( ) as two side edges ( ) facing the side plates ( ) and an end edge ( ) facing the annular plate ( ). The side plates ( ) include a screen ( ) for separating the raw fluid into a filtered fluid and a cake. The annular plate ( ) includes an ejection port ( ) for the cake. Inflow pressure of the raw fluid from the supply path ( ) into the filter chamber ( ) and rotation of the vane ( ) causes the filtered fluid to flow out from the filter element ( ) to the outside of the filter chamber ( ), a cake that remains inside the filter chamber ( ) being pushed to the outside of the filter chamber ( ) via the ejection port ( ).

Continuous squeeze-dewatering device

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Kagawa, Japan

Kunio Fujita