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US 5,183,568 AGranted
Self-cleaning strainer
AssigneeG A Industries, Inc.
InventorJoseph E. Lescovich
Life of this patent
Estimating the term…
Abstract
A self-cleaning strainer comprises a vertically disposed housing which contains a rotatable strainer basket. The housing has an open top, closed by a closure plate, an inlet adjacent the top of the housing and an outlet adjacent a closed bottom of the housing, the closed bottom having a flush discharge opening. The components used to rotate the strainer basket are disposed outside the flow of any water containing particulates that enters the housing. Cleaning devices such as a scraper blade supported in the strainer basket, a rotatable brush supported in the strainer basket, and a water jet manifold disposed between the housing sidewall and the sidewall of the strainer basket are used to clean the rotatable strainer basket.
Claims17
A self-cleaning strainer comprising:
- a vertically disposed housing having an upstanding side wall, an open top and a bottom wall;
- said housing having an inlet in the side wall for a liquid containing particulates, adjacent said open top, an outlet in the side wall adjacent said bottom wall for clean liquid, and a flush discharge opening in said bottom wall;
- a cover plate sealingly closing the open top of said housing;
- a rotatable strainer basket, having a cylindrical foraminous side wall with an inner surface and an open top and bottom, with openings through said cylindrical side wall for flow of liquid therethrough, disposed in said housing, spaced from said side wall of said housing and disposed below said inlet, such that liquid containing particulates entering said inlet passes into said strainer basket and outwardly through said openings to remove said particulates, and clean liquid is directed through said outlet;
- means for rotating said strainer basket in said housing, said means for rotating being positioned out of the flow of liquid containing particulates, and disposed within said housing between said cylindrical side wall of said strainer basket and said upstanding side wall of said housing;
- and
- means for cleaning the inner surface of the cylindrical side wall of said strainer basket to remove particulates which are collected thereon.
4 more elements
A self-cleaning strainer comprising:
- vertically disposed housing having an upstanding side wall, an open top and a bottom wall;
- said housing having an inlet in the side wall for a liquid containing particulates, adjacent said open top, an outlet in the side wall adjacent said bottom wall for clean liquid, a flush discharge opening in said bottom wall and an inwardly directing flange on said sidewall;
- a cover plate sealingly closing the open top of said housing;
- a rotatable strainer basket, having a cylindrical foraminous side wall with an inner surface and an open top and bottom, with openings through said cylindrical side wall for flow of liquid therethrough, disposed in said housing, spaced from said side wall of said housing and disposed below said inlet, said strainer basket having a top annular shoulder with a downwardly extending lip thereon having sprockets extending outwardly therefrom, which annular shoulder contacts said inwardly directed flange on the sidewall of said housing to form a closure therebetween, such that liquid containing particulates entering said inlet passes into said strainer basket and outwardly through said openings to remove said particulates, and clean liquid is directed through said outlet;
- means for rotating said strainer basket in said housing, out of the flow of liquid containing particulates comprising a rotatable sprocket wheel, and a chain engaged with said sprocket wheel and said sprockets on said strainer basket;
- and
- means for cleaning the inner surface of the cylindrical side wall of said strainer basket to remove particulates which are collected thereon.
4 more elements
A self-cleaning strainer comprising:
- a vertically disposed housing having an upstanding side wall, an open top and a bottom wall;
- said housing having an inlet in the side wall for a liquid containing particulates, adjacent said open top, an outlet in the side wall adjacent said bottom wall for clean liquid, and a flush discharge opening in said bottom wall;
- a cover plate sealingly closing the open top of said housing;
- a rotatable strainer basket, having a cylindrical foraminous side wall with an inner surface and an open top and bottom, with openings through said cylindrical side wall for flow of liquid therethrough, disposed in said housing, spaced from said side wall of said housing and disposed below said inlet, such that liquid containing particulates entering said inlet passes into said strainer basket and outwardly through said openings to remove said particulates, and clean liquid is directed through said outlet;
- a top annular shoulder on said cylindrical side wall of said strainer basket, and an inwardly directed flange on the side wall of said housing which contacts said shoulder to form a closure therebetween, said top annular shoulder having a downwardly extending lip having sprockets thereon extending outwardly therefrom;
- means for rotating said strainer basket in said housing, said means for rotating being positioned out of the flow of liquid containing particulates;
- and engaging said sprockets on said downwardly extending up;
- and
- means for cleaning the inner surface of the cylindrical side wall of said strainer basket to remove particulates which are collected thereon.
6 more elements
Dependencies are inferred from the claim text.