公开(公告)号：US5326226A

公开(公告)日：1994-07-05

申请号：US68964

申请日：1993-05-28

Applicant: Wojciech Wyczalkowski ,  John Von Essen ,  Wojciech Zoladek

Inventor： Wojciech Wyczalkowski ,  John Von Essen ,  Wojciech Zoladek

IPC: B01F7/00 ,  B01F15/00 ,  B21D53/78 ,  B21H7/16 ,  F04D3/00 ,  F04D7/04 ,  F04D29/18 ,  F04D29/38

CPC classification number: B01F7/00341 ,  B21D53/78 ,  F04D29/181 ,  F04D3/005 ,  F04D7/045 ,  B21H7/16 ,  Y10S416/03 ,  Y10T29/49327 ,  Y10T29/49336

Abstract: A high solidity impeller has a number of equally spaced blades, each formed from a sheet that is bent to a continuous cylindrical curve along a roll axis that lags (in the rotation direction) the radius at which the blade is attached to the shaft. The blade also is pitched by rotation around the radius, i.e., the leading edge is raised in the flow direction and the trailing edge is lowered. The roll axis preferably lags the radius by 45.degree.. This arrangement provides a good approximation of a true hydrofoil and results in an excellent reconciliation between interests of material and manufacturing cost vs. pumping efficiency. The blades can be formed by rolling asymmetrically shaped contours cut from a flat sheet. A base member and preferably a connecting arm couple each blade to the shaft. The base member abuts the rolled contour along surfaces referenced to the roll axis, which surfaces can be used as a reference for rolling. The base member is sufficiently thick to accommodate the continuous curve of the blade, and is preferably welded to the rolled sheet. Although the blade contour is asymmetrical when flat, the roll and pitch preferably place the edges of adjacent blades in common radial planes intersecting the rotation axis, such that the impeller occupies a high percentage of the area of its axial projection.

Abstract translation: 高固体叶轮具有多个等间隔的叶片，每个叶片由沿着沿着轴线弯曲成连续圆柱形曲线的片材形成，叶片轴线在叶片附接到轴的半径方向（在旋转方向上）。 刀片也通过围绕半径的旋转而倾斜，即，前缘在流动方向上升高并且后缘降低。 辊轴优选在45°的范围内。 这种安排提供了真正的水翼的良好近似，并且导致材料的利益与制造成本与泵送效率之间的良好协调。 可以通过滚动从平板切割的不对称形状的轮廓来形成叶片。 基部构件并且优选地连接臂将每个叶片联接到轴。 基部构件沿着与轧辊轴线相关的表面邻接轧制轮廓，该表面可用作轧制参考。 基部件足够厚以适应刀片的连续曲线，并且优选地焊接到轧制板上。 尽管叶片轮廓在平坦时不对称，但是辊和节距优选地将相邻叶片的边缘放置在与旋转轴线相交的共同径向平面中，使得叶轮占据其轴向投影面积的高百分比。

公开(公告)号：US5762417A

公开(公告)日：1998-06-09

申请号：US797843

申请日：1997-02-10

Applicant: John Von Essen ,  Wojciech Wyczalkowski

Inventor： John Von Essen ,  Wojciech Wyczalkowski

IPC: B01F5/12

CPC classification number: B01F7/00641 ,  B01F7/00375 ,  B01F7/168 ,  B01F2215/0422

Abstract: A mixing apparatus has a tank for holding a material to be mixed, a drive shaft rotatable in the tank, a radially inner impeller on the drive shaft with blades pitched to produce axial flow of the material in a first direction, and a radially outer impeller with blades pitched to produce axial flow in an opposite direction. The radially inner impeller can be a high solidity impeller disposed in a preferably-stationary flow shield occupying a portion of a circumference between the inner and outer impellers, and providing a barrier between the material flowing axially in opposite directions while leaving spaces for recirculation of material by radial flow at the ends of the opposite axial flows. The outer impeller can be coupled to the drive shaft by connecting members protruding radially through axial spaces provided in or around the flow shield. Baffles are fixed in the tank and support the flow shield. The baffles have inclined inner and outer sections that extend axially and are pitched to intercept circumferential flow produced by the inner and outer impellers, respectively, redirecting the flow axially in the appropriate direction. A number of axially spaced impeller stages are provided, each having an inner impeller in a section of the flow shield and an outer impeller on connecting members that extend through axial gaps between sections of flow tube supported on the baffles.

Abstract translation: 混合装置具有用于保持要混合的材料的罐，可在罐中旋转的驱动轴，驱动轴上的径向内部叶轮，叶片倾斜以产生材料沿第一方向的轴向流动，径向外部叶轮 叶片倾斜以产生沿相反方向的轴向流动。 径向内叶轮可以是高固体叶轮，其设置在优选静止的流动屏蔽件中，该流动屏蔽件占据内部和外部叶轮之间的圆周的一部分，并且在沿相反方向轴向流动的材料之间提供阻挡层，同时留下用于材料再循环的空间 通过在相对的轴向流动的端部处的径向流动。 外部叶轮可以通过径向突出设置在流动屏蔽件内或周围的轴向空间的连接构件联接到驱动轴。 挡板固定在油箱中，并支撑流量屏蔽。 挡板具有倾斜的内部和外部部分，该内部和外部部分轴向延伸并且倾斜以分别拦截由内部和外部叶轮产生的周向流动，从而沿着适当的方向轴向地引导流体。 提供了许多轴向间隔开的叶轮级，每个叶轮级在流动屏蔽件的一部分中具有内部叶轮，在连接构件上具有延伸穿过支撑在挡板上的流动管段之间的轴向间隙的外部叶轮。