Screening machine and associated screen panel

  • US 8,261,915 B2
  • Filed: 05/20/2009
  • Issued: 09/11/2012
  • Est. Priority Date: 12/06/2005
  • Status: Active Grant
First Claim
Patent Images

1. A screening machine comprising:

  • a machine frame having lining rails permanently attached to the interior thereof;

    a perforate screen assembly engaging the machine frame and onto which particulate material to be screened is discharged; and

    a driver coupled to the screen assembly adapted to impart vibratory motion to the screen assembly and promote separation of the particulate material by the screen assembly;

    wherein the screen assembly further comprises at least one screen panel adapted to be selectively inserted into and removed from the screening machine, the at least one screen panel having a generally planar screening surface and a screen panel frame with a peripheral rim extending around at least a portion of the screening surface and being at least partially recessed relative to the screening surface with a seal member mounted to the screen panel frame, the seal member engaging the lining rails of the machine frame when the screen panel is inserted into the screening machine;

    wherein the cross section of the rim of the screen panel has a generally horizontal first portion adapted to hold pre-tensioned wire mesh screen material, a generally vertical second portion integral with and substantially perpendicular to the first portion, and a generally horizontal third portion substantially perpendicular and integral with the second portion;

    wherein the seal member comprises a lip adjacent to the intersection of the first portion and the second portion of the rim, and the lip is adapted to fill the void between the machine frame and the screen panel when the screen panel is inserted into the screening machine.

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