OXYGEN-SUPPLYING APPARATUS FOR CULTURE ON SEA SURFACE

摘要

PURPOSE:To provide the subject apparatus driving a diaphragm pump with compressed air, introducing compressed air by the head applied to a seawater ejection piping and continuously dispersing a large quantity of air in the form of fine bubbles. CONSTITUTION:Seawater is introduced into a diaphragm pump 9 through a suction pipe 12 provided with a strainer 11. Compressed air supplied from a compressor 1 driven by an engine 2 is introduced through a filter 3, a throttle valve 8 and a piping 6 into the diaphragm pump 9 to drive the pump. Separately, a part of the compressed air is passed through a throttle valve 7 and a down pipe of a vertical U-shaped pipe 13' and exhausted from the lower end of an air piping 6 in a riser. Seawater is intermittently ejected from the diaphragm 9 by the head difference H.