PROBLEM TO BE SOLVED: To solve the problem that spray liquid is unnecessarily circulated and power consumption increases, since a conventional sprayer used for a farm operation or the like has a constitution in which, when a nozzle opening/closing valve at hand is closed, the spray liquid discharged from a discharge pump is returned to the storage tank side.SOLUTION: A mode changeover switch 55 for selecting an operation mode (suppression of power consumption) for stopping a discharge pump P when the pressure in a channel 25 becomes constant in the state where a nozzle changeover valve 34 is closed, or an operation mode (stirring in a tank 10) for circulating spray liquid by driving the discharge pump P as it is, is provided in a power supply circuit 50.COPYRIGHT: (C)2014,JPO&INPIT【課題】農作業等に用いて噴霧器において、従来手元のノズル開閉バルブを閉じると吐出ポンプから吐出された噴霧液が貯留タンク側へ戻される構成であったため、不必要に噴霧液が循環されて消費電力が大きくなる問題があった。【解決手段】ノズル切り換えバルブ34を閉じた状態で流路25の圧力が一定圧になった時点で吐出ポンプPを停止させる動作モード(消費電力の抑制)と、そのまま吐出ポンプPを駆動して噴霧液を循環させる動作モード(タンク10内攪拌)を選択するためのモード切り換えスイッチ55を電源回路50に設ける。【選択図】図11
