PROBLEM TO BE SOLVED: To provide a spreader for a granular substance, which can equally supply air from a blower toward a pair of right and left ventilation cylinders from a blast cylinder.SOLUTION: The ventilation cylinders 30 and 30 are provided below right and left feeders 11 and 11, respectively one-side ends of the ventilation cylinders 30 and 30 communicate with the blast cylinder 31 equipped with the blower 12 the other ends on the downstream side are connected to injection pipes 13 and 13 the blower is equipped with a blast fan 12a air injected by the blower 12 branches off rightward and leftward so as to enter the ventilation cylinders 30 and 30 through the blast cylinder 31 a blast regulating valve 32, which regulates rotation around a vertical axis and regulates the ratio of air sent to the right and left ventilation cylinders 30 and 30, is provided in a place branching off rightward and leftward and connected to the ventilation cylinders 30 and 30 from the blast cylinder 31 and in the blast cylinder 31, an air quantity regulating valve 33 for regulating rotation around a horizontal axis is provided on the upper side of the blast of right and left air quantity regulating valves 32.at a right and left-branched site for connecting the blast cylinder 31 to the ventilation cylinders 30 and 30, and disposing an air volume-adjusting valve 33 rotated on a lateral shaft to adjust the air volume on the air-blowing upstream side of the blown air-adjusting valve 32, in the blow cylinder 31.COPYRIGHT: (C)2008,JPO&INPIT【課題】粉粒状物散布装置において、送風装置の送風を送風筒から左右一対の通気筒に向けて均等に供給しようとするものである。【解決手段】左右の繰出装置11,11の下方には夫々通気筒30,30をのぞませ、該通気筒30,30の一端は送風装置12を備えた送風筒31に連通し、下流側他端は前記噴管13,13に接続し、前記送風装置12は送風ファン12aを備え、該送風装置12による墳風は前記送風筒31を経由して左右に分岐して通気筒30,30に入るよう構成し、前記送風筒31から通気筒30,30に接続する左右分岐箇所には、縦軸回りに回動調節し左右の前記通気筒30,30への送風割合を調節する送風調節弁32を設け、前記送風筒31内において、上記左右風量調節弁32の送風上手側には横軸回りに回動調節する風量調節弁33を設ける。【選択図】 図3
