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US 4,792,394 AGranted
Bar screening apparatus
AssigneeRudz Enterprises, Inc.
InventorStanley P. Rudzinski
Life of this patent
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AssigneeRudz Enterprises, Inc.
InventorStanley P. Rudzinski
Estimating the term…
A bar screening apparatus for the efficient screening and removal of solid materials from a liquid flow stream. The bar screen includes a plurality of bars that are disposed in substantially parallel adjacent relation to each other and each have an upstream face disposed at an acute angle to the direction of flow of the liquid flow stream for enhancing screening of even relatively thin solid waste materials without significantly impeding the flow stream. The bars of the screen preferably are formed with a plurality of flow apertures in their active region which further minimizes head losses in the system and enhances screening of solid materials. A power operated two-directional rake is provided for more efficiently removing solid material that accumulate on the bar screen. Projections on the rake engage the bar screen only in one direction of the rake's movement and means are provided for forcing a close-fitting relationship between the rake projections and the screen bars during the raking operation.
A solids screening apparatus comprising a flow channel for directing a solids containing liquid flow strean along a predetermined path corresponding substantially to the longitudinal axis of said flow channel, a bar screen transversely mounted at a predetermined location in said flow channel, said bar screen including a plurality of bars each having an upstream face with a leading upstream edge on one side thereof and a trailing downstream edge on the other side thereof, means for mounting said bars in parallel spaced relation to each other to define elongated liquid flow openings therebetween, and said bars each being supported by said mounting means such that the lines of intersection of said upstream faces with a horizontal plane each is disposed at an acute angle to the longitudinal axis of said flow channel at said predetermined location with the leading edge of each bar being in substantial alignment with the trailing edge of an adjacent bar when viewed along said longitudinal axis.
A solids screening apparatus comprising a flow channel for directing a solids containing liquid flow stream along a predetermined path corresponding substantially to the longitudinal axis of said flow channel, a bar screen transversely mounted at a predetermined location in said flow channel, said bar screen consisting of a plurality of bars each having a substantially flat upstream face with a leading upstream edge on one side thereof and a trailing downstream edge on the other side thereof, means for mounting said bars in substantially parallel relation to each other for defining a plurality of elongated flow openings, said bars each being supported by said mounting means such that the lines of intersection of said upstream faces with a horizontal plane each is disposed at an acute angle to the longitudinal axis of said flow channel at said predetermined location with the leading edge of each bar being in substantial alignment with the trailing edge of an adjacent bar when viewed along said longitudinal axis, a rake having a plurality of projections each adapted to fit between respective adjacent bars of said bar screen in close relation to the upstream faces of said bars, and means supporting said rake for movement in one direction relative to said bar screen with said projections in close fitting relation to said bars for removing solids accumulated thereon and for movement in an opposite return direction with said projections disposed in an outwardly spaced relation with respect to said bars, drive means for moving said rake relative to said bar screen, and means for maintaining said close-fitting relationship between said rake projections and said bars when rake is moving in said first direction.
A bar screening apparatus for the screening of solid materials from a liquid flow stream comprising a flow channel for directing a solids containing liquid flow stream along a predetermined path corresponding substantially to the longitudinal axis of said flow channel, a bar screen transversely mounted at a predetermined location in said flow channel, said bar screen consisting of a plurality of bars each having a substantially flat upstream face with a leading upstream edge on one side thereof and a trailing downstream edge on the other side thereof, means for mounting said bars in substantially parallel relation to each other for defining a plurality of elongated flow openings, said bars each being supported by said mounting means such that the lines of intersection of said upstream faces with a horizontal plane each is disposed at an acute angle to the longitudinal axis of said flow channel at said predetermined location with the leading edge of each bar being in substantial alignment with the trailing edge of an adjacent bar when viewed along said longitudinal axis, a rake having a plurality of projections each adapted to fit between respective adjacent bars of said bar screen in close relation to the upstream faces of said bar screen in close relation to the upstream faces of said bars, and means supporting said rake for movement in one direction relative to said bar screen with said projections in close fitting relation to said bars for removing solids accumulated thereon and for movement in an opposite return direction with said projections disposed in an outwardly spaced relation with respect to said bars.
A solids screening apparatus comprising a flow channel for directing a solids containing liquid flow stream along a predetermined path corresponding substantially to the longitudinal axis of said flow channel, a bar screen transversely mounted at a predetermined location in said flow channel, said bar screen including a plurality of bars each having an upstream face with a leading upstream edge on one side thereof and a trailing downstream edge on the other side thereof, means for mounting said bars in parallel spaced relation to each other to define elongated liquid flow openings therebetween, and said bars each being supported by said mounting means such that the lines of intersection of said upstream faces with a horizontal plane each is disposed at an acute angle to the longitudinal axis of said flow channel at said predetermined location with the trailing edge of each bar transversely offset from the leading edge of the bar when viewed along said longitudinal axis.
A solids screening apparatus comprising a flow channel for directing a solids containing liquid flow stream along a predetermined path corresponding substantially to the longitudinal axis of said flow channel, a bar screen transversely mounted at a predetermined location in said flow channel, said bar screen consisting of a plurality of bars each having a substantially flat upstream face with a leading upstream edge on one side thereof and a trailing downstream edge on the other side thereof, means for mounting said bars in substantially parallel relation to each other for defining a plurality of elongated flow openings, said bars each being supported by said mounting means such that the lines of intersection of said upstream faces with a horizontal plane each is disposed at an acute angle to the longitudinal axis of said flow channel at said predetermined location with the trailing edge of each bar transversely offset from the leading edge of the bar when viewed along said longitudinal axis, a rake having a plurality of proejctions each adapted to fit between respective adjacent bars of said bar screen in close relation to the upstream faces of said bars, and means supporting said rake for movement in one direction relative to said bar screen with said projections in close fitting relation to said bars for removing solids accumulated thereon and for movement in an opposite return direction with said projections disposed in an outwardly spaced relation with respect to said bars, drive means for moving said rake relative to said bar screen, and means for maintaining said close-fitting relationship between said rake projections and said bars when rake is moving in said first direction.
A bar screening apparatus for the screening of solid materials from a liquid flow stream comprising a flow channel for directing a solids containing liquid flow stream along a predetermined path corresponding substantially to the longitudinal axis of said flow channel, a bar screen transversely mounted at a predetermined location in said flow channel, said bar screen consisting of a plurality of bars each having a substantially flat upstream face with a leading upstream edge on one side thereof and a trailing downstream edge on the other side thereof, means for mounting said bars in substantially parallel relation to each other for defining a plurality of elongated flow openings, said bars each being supported by said mounting means such that the lines of intersection of said upstream faces with a horizontal plane each is disposed at an acute angle to the longitudinal axis of said flow channel at said predetermined location with the trailing edge of each bar transversely offset from the leading edge of the bar when viewed along said longitudinal axis, a rake having a plurality of projections each adapted to fit between respective adjacent bars of said bar screen in close relation to the upstream faces of said bars, and means supporting said rake for movement in one direction relative to said bar screen with said projections in close fitting relation to said bars for removing solids accumulated thereon and for movement in an opposite return direction with said projections disposed in an outwardly spaced relation with respect to said bars.
Dependencies are inferred from the claim text.