| 摘要 |
PURPOSE:To prevent a raw material residue from sticking on a cylinder internal wall by allowing the bottom internal wall surface of a cylinder supplying a raw material and hot water to a filter block to be a roughened surface. CONSTITUTION:The mixed liquid of a raw material and hot water is extracted and supplied by a valve mechanism 2 from a cylinder 1 through a cylinder block connected to a cylinder bottom face. Since the bottom circular wall face is worked to form a roughened surface, a raw material residue is not in face- contact but is in point-contact with the wall face, detaching effect is enhanced, when a filter block is lowered after extracting the mixed liquid, the raw material residue is discharged easily and the raw material residue is prevented from being kept while attaching on a cylinder internal wall, as it is. Consequently, good mixed liquid extraction is always executed without complexing a constitution. |
