Screen assembly for separating particulate material
AssigneeFerrell-Ross, Inc.
InventorWilliam H. Wallace
Life of this patent
Estimating the term…
Abstract
In an apparatus for separating particulate material of a selected size from particulate material of a smaller size, there is provided a screen assembly having a screen element for separating the particulate material. A tray assembly loosely supports impact elements in close relationship to the screen to dislodge particulate material from the apertures of the screen upon impact during operation of the apparatus which agitates the screen and tray assembly. The screen element and the tray assembly form an enclosure for the impact elements. The screen assembly and tray assembly are intermeshed and independently supported from one another and are adapted to separate upon removal from the apparatus.
Claims18
In an apparatus for separating particulate material of a selected size from particulate material of a smaller size, a screening assembly comprising:
- (a) screen means having apertures of a selected size for receiving and separating the particulate material;
- (b) impact elements for impacting the screen means to dislodge particulate material from the apertures;
- (c) a support tray means adapted to underlie said screen means and having upwardly-projecting wall means to intermesh with the screen means to form an enclosure between said tray means and the screen means for said impact elements, said support tray means loosely supporting said impact elements in said enclosure;
- (d) agitator means for agitating the enclosure to impact the screen means with the impact elements and to convey said particulate material along said screen means to separate the particulate material of the smaller size through the apertures;
- (e) first guide means on the agitator means for receiving and supporting the screen means independently of the intermeshing support tray means;
- and
- (f) second guide means on the agitator means for receiving and supporting the support tray means in said underlying relation to position said wall means in said intermeshing relationship with the screen means to form the enclosure, the second guide means being adapted to support the support tray means of the enclosure independently of the screen means of the enclosure so that the intermeshed screen means and support tray means are each independently supported, said first and second guide means adapted to permit sliding movement of said intermeshed screen means and tray means out of said intermeshing relationship so as to be freely separable.
In an apparatus for separating particulate material of a selected size from particulate material of a smaller size provided with screen means with apertures of a selected size for separating the particulate material, agitator means for agitating the particulate material along the screen means, the agitator means having first guide means for receiving the screen means for agitating the screen means, and a screen cleaning assembly, the screen cleaning assembly comprising:
- (a) impact elements for impacting the screen means to dislodge particulate material from the apertures;
- (b) a support tray means adapted to intermesh with the screen means for loosely supporting said impact elements in close relationship with the screen means and to form an enclosure between the tray means and the screen means for the impact elements;
- and
- (c) second guide means supported by the agitator means receiving and supporting the support tray means and retaining the support tray means with the screen means to form the enclosure, so that the intermeshed support tray means and screen means are each independently supported, said first and second guide means adapted to permit sliding movement of said intermeshed tray means and screen means out of intermeshing relationship so as to be separable upon removal from the first and second guide means.
Dependencies are inferred from the claim text.