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US 4,446,022 AGranted
Vibratory screening apparatus for screening liquids
AssigneeThule United Limited a British Company
InventorAlan Harry
Life of this patent
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AssigneeThule United Limited a British Company
InventorAlan Harry
Estimating the term…
A vibratory screening machine as described separating solid particles from liquid in which a fine mesh screen (30) includes an inclined region extending upwardly to a discharge edge (34) over which solid material (36) separated by filtration can pass. Vibration of the screen (30) causes the solid particulate material to move towards the discharge edge (34). The screen (30) forms the base of a reservoir having sides (10) and a weir or dam (46) at the opposite end to the discharge edge (34) and is slidable in and out to provide for cleaning and/or replacement. A suspension of liquid and solid particulate material is supplied to the machine along a pipeline (28) and is discharged onto the rear end of the screen (30) from a discharge head (24). One or more intermediate screens of similar design may be located above the main vibrating screen and above one another and the suspension of liquid and solid material discharged onto each of the screens overflows onto the rear end of the screen immediately therebelow. Trays (68) and (70) are provided to catch liquid draining through.
A vibratory screening machine for separating solid particles from liquid, comprising means for introducing a liquid medium having said particles, a fine mesh first screen located within a vibratory basket, means for vibrating the basket, a frame surrounding the screen, the fine mesh screen being in the form of a shallow `V` with one of the limbs of the `V` being so inclined that it extends in an upward direction towards a discharge end having a first edge over which filtered particles are discharged due to vibration, the other limb of the `V` being substantially horizontal and extending between the inclined limb and a weir or dam at the rear of the screen, horizontal bearers within the basket for supporting the frame at the sides of the substantially horizontal portion of the screen, and clamping means for securing the screen within the basket, the clamping means being removable to permit the entire screen and frame to be slidably removed from the basket.
Dependencies are inferred from the claim text.