Method and apparatus for screening

摘要

A screen assembly for a vibratory screening machine is provided including a plate having perforations with edges that are neither perpendicular nor parallel to wires of a wire mesh of the screen assembly.

主权项

1. A vibratory screening assembly for use on a vibratory screening machine, comprising:
a screen having woven wires forming a weave pattern; and a plate having a front portion, a back portion, a first side and a second side; and perforations with edges forming a zigzag pattern; wherein the front portion and back portion are substantially parallel; wherein the first side and second side are substantially perpendicular to the front portion and the back portion; wherein the plate is configured to have opposing tensioning forces applied to the first side and the second side; and wherein the screen is mounted on a top surface of the plate such that it spans the perforations, and the wires forming the weave pattern are not parallel or perpendicular to the perforation edges.