| 摘要 |
The present invention provides a filter that can minimize the amount of residual liquid within the housing or container with a simplified construction. The article includes a cylinder portion having a cylindrical internal space with both ends open, a cylindrically formed pleated filter 5 inserted in the internal space of the cylinder portion 3 in contact with the inner wall of the cylinder portion 3 and having upper and lower edges liquid-tightly sealed. A perforate inner core 7 supports the inner surface of the pleated filter 5 , lower and upper end caps 9, 11 are liquid-tightly bonded to the respective ends of the cylinder portion 3 . A liquid distribution passage 21 communicates with gaps between the pleats of the pleated filter 5 from the lower portion of the cylinder portion 3 . A liquid feed inlet 15 communicates with the liquid distribution passage 21 formed between the periphery of the pleated filter and a tapered inner wall surface 8 of the cylinder portion 3 . A filtrate liquid withdrawal passage 25 communicates with an internal passage 23 of the perforate core 7 , and a filtrate outlet 27 communicates with the withdrawal passage.
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