Mill screen apparatus
AssigneePennsylvania Crusher Corporation
InventorCarl R. Graf
Life of this patent
Estimating the term…
Abstract
Apparatus for reducing and sizing particle material that is readily susceptible to efficiency enhancement with vibratory exciters. The apparatus includes a rotary drum particle size reductino device having a substantially imperforate drum, and a rotary screen having a perforate screening member with upstream and downstream portions, said upstream portion of the screen surrounding at least a portion of the periphery of the drum. A screen supporting member including a vibratory exciter engages an upstream portion of the screen for vibrating said upstream portion substantially independently of the drum.
Claims25
Co-rotating screen and reduction drum apparatus for reducing particulate materials, comprising:
- (a) rotary drum particle size reduction means having a substantially imperforate drum,
- (b) a rotary screen connected with said drum for co-rotation therewith, and having a perforate screening member with upstream and downstream portions, including upstream and downstream ends, said upstream portion of the screen surrounding at least a portion of the periphery of the drum, and
- (c) means engaging an upstream portion of said screen and including a vibratory exciter for vibrating said upstream portion substantially independent of the drum, for restricting consumption of power that would otherwise be expended in vibrating the drum while promoting increased removal of fines from the particulate material through the upstream portion of the screening member.
Apparatus according to claim wherein the means for vibrating predominantly produces in said screen vibrational components in directions transverse to the axis of rotation of the screen.
Dependencies are inferred from the claim text.