| 摘要 |
PROBLEM TO BE SOLVED: To provide a continuous pressure filtering machine enabling continuous filtering for introducing a raw liquid into a hermetically closed tank under pressure to filter the same in a filter medium part and performing the recovery of a filtrate or the recovery of a concentrated liquid. SOLUTION: Washing pipes (13) are suspended in a plurality of partitioned chambers (12) formed by partitioning an annular filter cylinder (5a) by a partition wall (11) and the base ends of the washing pipes (13) are connected to a plurality of communication pipes (15) provided to a fixed valve (14) by drilling. A supply pipe (21) is arranged to a rotary valve (17) brought into slide contact with the fixed valve (14) and a washing water pipe 23 is connected to this supply pipe (21) while the communication pipes (15, and the like.) provided to the fixed valve (14) are provided so as to correspond to the revolving locus of the supply pipe (21) arranged to the rotary valve (17) to freely join and separate the washing water pipe (23) with respect to the washing pipes (13) suspended in the annular filter cylinder (5a). The backward washing zone and filter zone of the annular filter cylinder (5a) are changed over by the rotary valve (17) brought into slide contact with the fixed valve (14) to enable the continuous filtering of the annular filter cylinder (5a) while washing the partition chambers (12) at every block. COPYRIGHT: (C)2003,JPO
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