公开(公告)号：EP0057319A3

公开(公告)日：1983-01-26

申请号：EP81305743

申请日：1981-12-04

申请人： Vaughan Co., Inc.

发明人： Dorsch, Glenn R.

IPC分类号： F04D07/04 ,  F04D29/42

CPC分类号： F04D7/045

摘要： A booster propeller (15) is located in a flared funnel (28) leading toward inlet apertures (14) in an end plate (13) of a centrifugal pump casing (5). Such propeller has radially projecting blades (16) of generally triangular cross section for propelling slurry toward the apertures. The end plate is recessed into the impeller-receiving bowl (6) of the pump casing. The inner face of the end plate is flush with the adjoining inner face of the peripheral pump outlet conduit (18). The impeller (7) has vanes (10) projecting toward the end plate and having cupped leading surfaces forming a sharpened edge. Such blades are swept back in the area of the end plate inlet apertures for effective slicing of solid material in the slurry in combination with edges of the inlet apertures. The pump bowl has a semicylindrical wall portion closely encircling the impeller before the wall spirals volutely outward to the outlet conduit.

摘要翻译： 增压螺旋桨位于通向离心泵壳体的端板中的弓形入口孔的扩口漏斗的入口处。 这种螺旋桨具有大致直角三角形横截面的径向突出的叶片，底部由宽的后侧和远离叶轮的宽的底侧构成; 每个叶片的斜边是相对于垂直于轴线的平面倾斜的宽上表面，用于将浆料推向入口孔。 端板凹入到泵壳的叶轮容纳碗中，使得端板的内表面与与泵壳一体的外围泵出口导管的相邻内表面齐平。 叶轮具有垂直于轴线的圆形护罩板，叶片或叶片朝向端板突出并且具有形成锋利边缘的杯形前表面。 这样的叶片在端板入口孔的区域中被扫掠，以有效地切割浆料中的块状物或块状物料，并与入口孔的锋利前缘组合。 泵壳碗具有紧密地围绕叶轮的半圆柱形壁部分，并且在碗壁螺旋向外螺旋到出口导管之前提供用于浆料向外加速的增压区域。 从罩板相对于泵送叶片突出的短肋或叶片在壳体顶部处的密封区域保持轻微的抽吸。

公开(公告)号：EP0057319A2

公开(公告)日：1982-08-11

申请号：EP81305743.7

申请日：1981-12-04

申请人： Vaughan Co., Inc.

发明人： Dorsch, Glenn R.

IPC分类号： F04D7/04 ,  F04D29/42

CPC分类号： F04D7/045

摘要： A booster propeller (15) is located in a flared funnel (28) leading toward inlet apertures (14) in an end plate (13) of a centrifugal pump casing (5). Such propeller has radially projecting blades (16) of generally triangular cross section for propelling slurry toward the apertures. The end plate is recessed into the impeller-receiving bowl (6) of the pump casing. The inner face of the end plate is flush with the adjoining inner face of the peripheral pump outlet conduit (18). The impeller (7) has vanes (10) projecting toward the end plate and having cupped leading surfaces forming a sharpened edge. Such blades are swept back in the area of the end plate inlet apertures for effective slicing of solid material in the slurry in combination with edges of the inlet apertures. The pump bowl has a semicylindrical wall portion closely encircling the impeller before the wall spirals volutely outward to the outlet conduit.

摘要翻译： 增压螺旋桨位于通向离心泵壳体的端板中的弓形入口孔的扩口漏斗的入口处。 这种螺旋桨具有大致直角三角形横截面的径向突出的叶片，底部由宽的后侧和远离叶轮的宽的底侧构成; 每个叶片的斜边是相对于垂直于轴线的平面倾斜的宽上表面，用于将浆料推向入口孔。 端板凹入到泵壳的叶轮容纳碗中，使得端板的内表面与与泵壳一体的外围泵出口导管的相邻内表面齐平。 叶轮具有垂直于轴线的圆形护罩板，叶片或叶片朝向端板突出并且具有形成锋利边缘的杯形前表面。 这样的叶片在端板入口孔的区域中被扫掠，以有效地切割浆料中的块状物或块状物料，并与入口孔的锋利前缘组合。 泵壳碗具有紧密地围绕叶轮的半圆柱形壁部分，并且在碗壁螺旋向外螺旋到出口导管之前提供用于浆料向外加速的增压区域。 从罩板相对于泵送叶片突出的短肋或叶片在壳体顶部处的密封区域保持轻微的抽吸。