PURPOSE: An oxygen supply device of a fish farm using a pumping power is provided to supply oxygen to the fish farm in an environment-friendly manner without using additional energy by supplying water to the fish farm while oxygen is dissolved in the water as the water is sprayed while rotating a fan including a nozzle by using pumping power of a pump that supplies the water to the fish farm, and the water drops sprayed from the nozzle contact air. CONSTITUTION: An oxygen supply device of a fish farm using a pumping power comprises a fish farm water supply pipe(102), a fan(200), and an oxygen dissolving chamber(300). The fish farm water supply pipe supplies water to the fish farm through a pump. The fan is installed at an end side of the fish farm water supply pipe, and comprises a cylindrical body(201) installed in a rotatable state at an end part of the fish farm water supply pipe, multiple wings(202) that are installed on and connected to an outer periphery of the body, and multiple nozzle(203) that are formed in the body and the wings, include pathways connected to the fish farm water supply pipe to spray the supplied water, and apply a rotating power to the body and the wings by the pumping power of the pump to induce air therein. The oxygen dissolving chamber is formed in a pipe shape having a predetermined space unit, and the fan is installed in the space.본 발명은 양어장에 공급되는 물의 양수력을 이용하여, 물에 산소를 용해시키며 물을 공급하는 산소공급 장치에 관한 것으로서, 유로(流路)가 형성된 팬(FAN)에 다수의 물 분사 노즐을 장착한 산소공급 팬 장치로, 노즐에서 분사되는 물의 분사력을 이용하여 작용과 반작용(action and reaction)의 원리로, 팬 장치를 회전시켜 공기를 흡입하며, 흡입되는 공기속으로 물을 분사 비산시켜 공기 중의 산소를 물에 용해시키며 양어장에 물을 공급하는 것으로서, 별도의 전원 없이 양어장에 공급되는 물의 양수력을 이용하여, 흡입되는 공기와 작은 물방울을 교반시켜, 물공급과 동시에 산소공급을 병행시키는 에너지 절약형 친환경 산소공급 장치에 관한 것이다.
