IMPLEMENT FOR PREVENTING CLOGGING OF AIR BLOWOFF HOLE AND AERATION DEVICE EQUIPPED THEREWITH

摘要

PROBLEM TO BE SOLVED: To provide an implement for preventing the clogging of air blowoff hole for preventing the clogging of an air blowoff hole and an aeration device equipped with this preventive implement. SOLUTION: An implement for preventing the clogging of air blowoff hole has a rod element 5 of which the leading end is inserted in an air feed pipe 1 from each air blowoff hole 2 and a holding member 3 holding the rod element 5 at the rear end thereof in a freely floating manner and is suitably used in an aeration apparatus wherein the air feed pipe 1 is laid on the bottom portion of an aeration tank and the air blowoff holes 2 are provided to the upper part of the air feed pipe 1.