PROBLEM TO BE SOLVED: To solve such a problem that, when dilution water for a chemical tank is taken from an outside river or the like by an intake pump, the river water includes many impurities that are prone to cause clogging of an injection nozzle of a spray boom.SOLUTION: A pesticide applicator includes a pump circuit 8 at a bottom of a chemical tank 3 for connecting it to an inlet 7 of a pesticide pump 6. The pump circuit 8 is disposed with a pesticide selector valve 11, a filter 10, and an intake selector valve 9. An intake port 12 formed on the intake selector valve 9 is connectably provided with an intake circuit 14 for sucking outside water by the intake pump 13 and taking it in the pump circuit 8. An intake port 15 formed on the pesticide selector valve 11 is connectably provided with a water supply circuit 16 for supplying the intake water via the intake circuit 14 and the pump circuit 8, to the chemical tank 3.COPYRIGHT: (C)2015,JPO&INPIT【課題】 薬液タンク内の希釈水を、取水ポンプによって外部の河川等から取水する場合は、不純ものが多く、散布ブームの噴射ノズルに詰り易い。【解決手段】 防除機において、前記薬液タンク3の底部に、防除ポンプ6の吸入口7との間を連結するポンプ回路8を設け、このポンプ回路8に、防除切替弁11と、フィルター10と、取水切替弁9とを配置し、前記取水切替弁9に形成の取水口12に、取水ポンプ13によって外部の水を吸入して前記ポンプ回路8に取込む取水回路14を連結可能に設け、前記防除切替弁11に形成の給水口15に、前記取水回路14、及びポンプ回路8を経た取水を薬液タンク3へ供給する給水回路16を連結可能に設ける。【選択図】 図6
