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1. 发明授权

US4898108A Seed singulator for agricultural planter 失效
标题翻译：农业播种机播种机
公开(公告)号：US4898108A
公开(公告)日：1990-02-06
申请号：US257183
申请日：1988-10-13
申请人： William C. McDermott
发明人： William C. McDermott
IPC分类号： A01C7/04
CPC分类号： A01C7/046
摘要： A seed singulator for an agricultural planter uses a housing with a seed cavity to which seed and compressed air is delivered and a disc with seed pockets which, in rotating, pick up seed kernels from the seed cavity and drop them at equally spaced intervals. A wear ring prevents the rotating disc from wearing the singulator housing and a resilient air cutoff pad has radial extensions which extend between sealing surfaces on the housing and the wear ring whereby seeds are prevented from wedging between the air cutoff pad and the side walls of the groove in which the pad is installed. The trailing edge of the air cutoff pad has coplanar segments in angular relation to one another which serve to accurately space the seed when using a seed disc with multiple annular rows of seed pockets.
摘要翻译：用于农业种植机的种子分选机使用具有种子空腔的壳体，种子和压缩空气被输送到其中，并且具有种子袋的圆盘，其旋转地从种子腔中取出种子颗粒并以等间隔的间隔将它们落下。磨损环防止旋转盘磨损分离器壳体，并且弹性空气截止垫具有在壳体和磨损环之间的密封表面之间延伸的径向延伸部，由此防止种子被阻塞在空气截断垫和侧壁之间凹槽，其中垫被安装在其中。空气截止垫的后缘具有彼此成角度关系的共面区段，这些区段用于当使用具有多个环形排种子袋的种子盘时准确地使种子空间。

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