The present invention relates to a manual respirator, the outlet having a check valve inlet and the pressure maintenance device is installed the bags have had to be formed inside the bladder, the inlet pipe and a cylindrical guide cylinder drum and the drum side of the discharge tube formed on the opposite side of which is connected to the bag outlet is formed integrally with the housing, to be rotatable in the drum and forming a rotating impeller is provided by fluid flowing into the inlet pipe, the guide is fixed coaxially to the cylinder is connected to the inlet end is formed, and is connected to a rotating shaft of the discharge cylinder and the impeller having an opening on one side of the ball axis The linear motion within a cylinder by the rotation movement, and blocking bujaegwa that selectively opens and closes the opening hole, and opening the connection pipe connecting the hole of the discharge pipe and the guide means of the drum, the initial position the blocking member is provided in the guide cylinder By providing a return and simultaneously the amount of air can be adjusted manually by the respiratory adjustment means configured to adjust the linear movement distance of the blocking member, the amount of air to be discharged from the bag to the impeller ie as equally the amount is determined so that longer times to achieve the air outlet so always set to be able to inject only the amount of air the lungs inflated to prevent the patient from excessive air supply as well as being able to ensure maximum patient safety, even back when pressure caused by the negligence of the respiratory system user effect have.본 발명은 수동호흡기에 관한 것으로서, 일방향밸브가 설치되는 입구와 압력유지장치를 갖는 출구를 갖으며 내부에 공기주머니가 형성되는 백과, 백의 출구에 연결되는 유입관과 그 반대측에 토출관이 형성된 드럼 및 이 드럼 일측에 원통형 가이드 실린더가 일체로 형성되는 하우징과, 상기 드럼내에 회전가능하게 설치되어 유입관으로 유입되는 유체에 의해 회전을 이루는 임펠러와, 상기 가이드실린더에 동축상으로 연결고정되어 단부에 주입구가 형성되고, 일측에 개폐공을 갖는 배출실린더와, 임펠러의 회전축에 연결되어 축의 회전운동에 의해 상기 실린더내를 직선운동하며 개폐공을 선택적으로 개폐하는 차단부재과, 상기 드럼의 토출관과 안내수단의 개폐
