Unpowered automatic backwashing filtering device

The invention relates to an unpowered automatic backwashing filtering device which comprises a hydraulic screen, a screen mesh is fixedly connected to one side of the hydraulic screen, the unpowered automatic backwashing filtering device further comprises a water storage tank located in the hydraulic screen and rotationally connected with the hydraulic screen, the top end of the water storage tank is open, and the water storage tank is of an eccentric structure; and a power assisting structure for pushing liquid to impact the screen is arranged above the water storage tank. The method has the effects of reducing energy waste and saving resources. 本申请涉及一种无动力自动反冲洗过滤装置，包括有水力筛，所述水力筛的一侧固定连接有筛网，还包括有位于所述水力筛的内部转动连接的储水箱，所述储水箱的顶端开口设置，所述储水箱为偏心结构，所述储水箱的上方设置有推动液体冲击所述筛网的助力结构。本申请具有减少能源的浪费，节省资源的效果。