Fecha de publicación: 27/10/2023 Fuente: WIPO "circular economy" The utility model discloses a high level water floating one-way valve, including negative pressure pipeline, limit filter pipe and stop valve, negative pressure pipeline has three mutually parallel first pipe portion, second pipe portion and third pipe portion, first pipe portion, second pipe portion and third pipe portion are head-to-head sequential connection, the tail end of third pipe portion is equipped with liquid discharge pipeline, and the stop valve is equipped with the liquid discharge pipeline. The limiting filter pipe is connected with the head end of the first pipe part and is parallel to the first pipe part, a floating ball is arranged in the limiting filter pipe, the stop valve is installed on the liquid discharging pipeline, a pipe opening position, combined with the floating ball, of the first pipe part is provided with a chamfer consistent with the radian of the floating ball, and the outer wall of the floating ball is wrapped by a silica gel layer. Compared with a traditional liquid level floating ball valve set, the high-position water floating one-way valve composed of the negative pressure pipeline, the limiting filter pipe and the floating ball is adopted, a complex negative pressure valve which provides power through pressure difference is changed into a high-position water floating switch which controls a switch through buoyancy of water, the manufacturing cost is reduced, and reliability is improved.