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1. 发明授权

US5205707A Ioric pump with cast impeller housing requiring three machined surfaces and one central piloting bore to control critical tolerances 失效
标题翻译：具有铸造叶轮壳体的Ioric泵需要三个加工表面和一个中心引导孔来控制关键公差
公开(公告)号：US5205707A
公开(公告)日：1993-04-27
申请号：US679948
申请日：1991-04-03
申请人： John E. Smith , Dennis N. Koenig, Jr. , William E. Ruhig, Jr.
发明人： John E. Smith , Dennis N. Koenig, Jr. , William E. Ruhig, Jr.
IPC分类号： F04D5/00 , F04D23/00
CPC分类号： F04D5/002 , F04D23/008 , F04D29/161 , F05B2250/19 , F05B2250/29
摘要： A toric pump has a metal impeller housing formed with a flat end face into which an annular impeller receiving recess extends to a depth which exceeds the axial thickness of the impeller mounted in the recess by an amount only sufficient to provide a minimum operating clearance for the impeller sides when an impeller cover is mounted on the housing with a flat end face of the impeller cover in sealed face to face engagement with the flat end face of the housing. A bore in the impeller housing receives a cylindrical portion of the pump drive motor to accurately locate the rotary axis of the impeller with respect to the peripheral side surface of the stripper portion of the pump housing. All impeller-stripper portion clearances are established by machining of the die cast impeller housing and the formation of a flat surface on the impeller cover. A filter cover mounted upon the impeller cover cooperatively defines with the impeller cover an enclosed filter receiving chamber having an externally accessible inlet port opening into the chamber through the filter cover and a pump inlet passage opening from the filter chamber into a pump chamber recessed into the flat end face of the impeller cover. The impeller cover is formed with an externally accessible outlet port communicating with the pump chamber. A resilient block of filter media is enclosed in the filter chamber to filter air or other fluid flowing through the chamber from the inlet port to the pump inlet passage.
摘要翻译：复曲面泵具有形成有平坦端面的金属叶轮壳体，环形叶轮容纳凹部延伸到其中的深度超过安装在凹部中的叶轮的轴向厚度的深度，该深度仅足以提供最小的操作间隙当叶轮盖被安装在壳体上时叶轮侧面处于密封面的叶轮盖的平坦端面以与壳体的平坦端面接合。叶轮壳体中的孔容纳泵驱动马达的圆柱形部分，以相对于泵壳体的汽提器部分的周边侧表面精确地定位叶轮的旋转轴线。所有叶轮剥离器部分间隙通过加工压铸叶轮壳体和在叶轮盖上形成平坦表面来建立。安装在叶轮盖上的过滤器罩与叶轮盖协调地限定封闭的过滤器接收室，其具有通过过滤器盖开口进入室的外部可接近的入口，以及从过滤室开口到泵室中的泵入口，叶轮盖的平坦端面。叶轮盖形成有与泵室连通的外部可接近的出口。过滤介质的弹性块被封闭在过滤室中，以将从入口到泵入口通道的流过腔室的空气或其它流体过滤。

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