Patent ID: 8029666
Filing Date: 2011-10-04
Classification: B01D,E02B,E03F

Abstract:
1. A screening device for wastewater overflow weirs, and the like, comprising: a perforate screening member through which wastewater flows from a wastewater side thereof to a clean water side thereof, having a plurality of screening rods arranged in a laterally spaced apart, mutually parallel relationship, and a plurality of cross members supporting said screening rods thereon, such that solids in the wastewater flowing through said screening member from a downstream direction to an upstream direction are captured by said screening member and form screenings on said screening rods; and a wiper member having a plurality of wiping elements disposed between said screening rods, and being shifted longitudinally in a clearing direction along said screening rods for clearing the screenings from said screening member; each of said wiping elements having at least one end projection extending longitudinally outwardly in said clearing direction of said wiping elements and disposed laterally between said wastewater side of said screening member and said clear water side of said screening member, a wastewater wiping surface that tapers in said upstream direction to said end projection to clear screenings on said wastewater side of said screening member from said screening rods, and a clean water wiping surface that curves in said downstream direction to said end projection to clear debris on said clean water side of said screening member from said screening rods.