PURPOSE: A bag shaped filtering material is held to a pressure bag which is composed of the elastic and resilient material and has a supporting means for filtering material in its outer wall. By doing so, filtering foreign matters can be easily removed from the filtering material only by releasing the pressure inside the pressure chamber.
CONSTITUTION: A body 1 is composed of a filtering chamber A and a raw liquid chamber B by a separating means 2. A filtering outlet 3 and pressurized liquid inlet 4 are provided in the filtering chamber A and a raw liquid inlet 5 and a cake take- out outlet 6 in the bottom are provided in the raw liquid chamber B. A pressure bag 7 is composed of resilient material like rubber, etc., and can deform in elastic form. In the outer wall of the pressure bag, a filtering material supporting means 8 is projected for its uniform shape and the supporting means 8 of the pressure bag 7 is covered by the filtering material 13. In case when filtering foreign matters stacked on the filtering material is to be removed, pressure inside the pressure chamber is released and the pressure bag reduces its size in such a way that aforsaid foreign matters stuck on the filtering material can be easily removed.
MIHARA EIJI
TSUKAMOTO SHIYOUICHI
