PURPOSE: To prevent a filter from clogging and the pressure loss across the filter from being raised by a method wherein a stream divering plate is provided in the vicinity of an inlet pipe within a casing, and an inlet and an outlet pipe are mutually crossed at right angles to move introduced foreign matters to an opposite direction against filter outlet water stream.
CONSTITUTION: An inlet pipe 1 of cooling sea water is provided to a casing 3 at right angles to the center shaft and an outlet pipe 2 is provided within the casing 3 in an extended manner to a shaft direction thereof, and the filter 10 having an angle θ1 as well as small pores 11 is provided to a leading end of the outlet tube 2. A withdrawing pipe 4 for foreign matters such as marine organisms is provided to a lower leading end of the casing 3 and a stream diverting plate 5 which can be rotated to left and right direction is installed to an inflow portion of the inlet pipe 1. If the stream diverting plate 5 is rotated to either one direction and set at some angles, the water stream flowing downwardly while revolved is introduced from small pores 11 of a filter and turned over to be discharged to the outlet pipe 2. In this time, foreign matters 20 are collected to a lower portion of the casing 3 and, if a withdrawing pipe 4 is opened, can be exhausted.
IZUMI KENKICHI
TAKAHASHI SANKICHI
MUKAI YASUAKI
TOMITA AKIRA
