公开(公告)号：US06763948B2

公开(公告)日：2004-07-20

申请号：US10062592

申请日：2002-01-31

申请人： Brady P. Ballman ,  Daniel Ferris ,  Stephen C. Mitchell ,  Jeff Pielage ,  Anthony J. Yanka

发明人： Brady P. Ballman ,  Daniel Ferris ,  Stephen C. Mitchell ,  Jeff Pielage ,  Anthony J. Yanka

IPC分类号： B07B142

CPC分类号： B07B1/46 ,  B07B1/42

摘要： A screening machine of the type used to separate or classify mixtures of solid particles of different sizes includes a fixed base and a perforate screen deck mounted for movement relative to the base during a screening operation. Leaf springs connect the tail end of the screen deck to the fixed base so that the leaf springs support the tail end of screen deck for movement relative to the base. The leaf springs are oriented horizontally to avoid introducing vertical movement to the screen deck as it moves to and from the head and tail ends. The leaf springs are offset or deflected when the machine is at rest or in the neutral mid-point of its stroke. This arrangement advantageously utilizes the bias of the leaf springs to accelerate, assist or enhance movement of the screen deck during portions of its stroke and likewise to decelerate, hinder or retard the movement during other portions of its stroke. With an appropriate offset, an increase in the effectiveness of the screening process (i.e., fewer defective particles passing through the screen deck) while a decrease in the screening time is attained.

摘要翻译： 用于分离或分类不同尺寸的固体颗粒的混合物的类型的筛选机包括固定基座和在筛选操作期间相对于基部移动的穿孔筛板。 板簧将屏幕甲板的尾端连接到固定底座，使得板簧支撑屏幕甲板的尾端相对于底座运动。 板簧水平定向，以避免当其移动到头部和尾端时，垂直移动到屏幕甲板上。 当机器处于静止状态或其行程的中立中点时，板簧偏移或偏转。 这种布置有利地利用板簧的偏压来加速，帮助或增强筛板在其行程的部分期间的移动，并且同样在其行程的其他部分期间减速，阻碍或延迟移动。 通过适当的偏移，在筛选时间的减少的同时，筛选过程的有效性（即，穿过筛板的缺陷颗粒越少）的增加。