This creation system discloses a kind of water injector,Applicable what plant (such as lotus rhizome,Taro etc.) harvesting,This water injector includes: a driving mould group,System's one water pipe line of connection; One first water supply pipe,System's connection driving mould group; One second water supply pipe,The opposite other end for connecting the driving mould group of system's the first water supply pipe of connection,And second water supply pipe small the first water supply pipe of what of caliber system; And an outlet pipeline,The other end of system's the second water supply pipe of connection the first water supply pipe of opposite connection,The water discharging direction system of outlet pipeline has angle with the water supply direction shape of the second water supply pipe.本創作係揭露一種噴水裝置,可適用於植物(例如蓮藕、芋頭等)之採收,此噴水裝置包含:一驅動模組,係連接一水管管路;一第一供水管路,係連接驅動模組;一第二供水管路,係連接第一供水管路相對連接該驅動模組之另一端,且第二供水管路之管徑係小於第一供水管路;以及一出水管路,係連接第二供水管路相對連接第一供水管路之另一端,出水管路之出水方向係與第二供水管路之供水方向形成一夾角。