The present invention provides a floating automatic irrigation system for saving water and anti-blocking by gravity or low-pressure irrigation. The system includes, at least, a floating device, a floating watering device, a floating exhausting device, an adjusting tank device and controlling equipment. The floating device contains the floating element to move up and down to disturb the liquid to reduce the blocking and reduce the flow and pressure. The floating devices can be installed in the main pipe depending on the flow and pressure of the main pipe. The floating watering device is an application for watering. The floating element of the floating watering device can be moved up and down to disturb the liquid to reduce the blocking. And then the liquid outflow into the soil by the watering hole, below the inserted cover. The air can be exhausted by the floating exhausting device in the main pipe and the adjusting tank. The air is exhausted when the sliding floating element of the floating exhausting device is floated to the gasket. And then the magnet on the sliding floating element and the magnet below the fixed exhausting ring are attracted to each other so that the liquid cannot overflow out in the main pipe. The demand of the irrigation liquid for irrigating plants can be automatically adjusted by the adjusting tank device and the controlling equipment. The remote controlling device can also be applied to achieve the controlling watering more precisely and quickly.本新型係提供一種藉由重力或低壓灌溉之省水防阻塞之浮動式自動灌溉系統,該系統至少包含浮動裝置、浮動式澆水裝置、浮動式透氣裝置、調整桶裝置和控制設備。浮動裝置內含浮體元件,藉由該浮體元件上下擾動液體,減少阻塞,降低液體流量及壓力。所以,視管內液體流量及壓力大小,可串聯安裝一至複數個該裝置至主管。利用浮動式澆水裝置進行澆灌,該裝置內含浮體元件,藉由該元件可上下擾動液體,減少阻塞,液體再由插入管下蓋之下方澆水口流出進入土壤。藉由浮動式透氣裝置進行排出管內或桶槽滯留氣體,該裝置內含滑動浮體元件,藉由該滑動浮體元件上浮至止漏墊片時,氣體排出,再由該元件上的磁鐵和固定透氣環之磁鐵相互吸引下,使得管內之液體不會溢流出去。藉由調整桶裝置和控制設備進行自動調整澆灌植物所需的液體量,也可利用遠端遙控裝置,達到更精確快速的控制澆灌。1‧‧‧浮動裝置16‧‧‧進水口2‧‧‧浮動式澆水裝置3‧‧‧浮動式透氣裝置4‧‧‧調整桶裝置41‧‧‧進水控制閥42‧‧‧液肥控制閥43‧‧‧排水控制閥44‧‧‧過濾器45‧‧‧比例控制閥46‧‧‧檢測顯示器A47‧‧‧檢測顯示器B5‧‧‧主管51‧‧‧控制設備52‧‧‧土壤53‧‧‧盆
