Abstract: A vibratory screening apparatus for removing suspended solids from liquid comprising a first mesh screen having openings with first and second dimensions for receiving the suspended solids thereon, a second mesh screen in superimposed abutment with the first screen and having openings with a third and fourth dimension perpendicular to the first screen openings, the third dimensions being larger than the first dimension and the fourth dimension being smaller than the second dimension of the first screen openings, and a vibratory source coupled to the abutting screens for vibrating the screens whereby the openings of the second screen effectively prevent suspended solids from becoming lodged in the openings of the first screen.

Abstract: A vibratory screening machine for separating particles from fluid includes a fine mesh screen located within a vibratory basket. The machine further includes a supply for delivering fluid having the entrained particles from a source thereof towards the screen. A weir is disposed substantially adjacent the supply and overlies an upstream portion of the screen for directing the flow of fluid onto the screen. The weir includes an upstream end positioned adjacent the supply and a downstream end. A plate forming a dam is attached to the downstream end of the weir to form a pool of fluid on the weir. The weir includes at least one fluid flow opening positioned substantially adjacent the plate forming the dam. A flow directing plate is connected to the weir for directing the fluid flowing through the fluid flow opening towards the upstream portion of the screen underlying the weir.