Systems and methods for screening
AssigneeProcess Wastewater Technologies, LLC
InventorsRobert A. Hawkins, Edwin R. Hunt
Life of this patent
Estimating the term…
Abstract
A screening system for solid removal includes a housing and a screen positioned within the housing. A flow inlet is operatively connected to an interior chamber defined by the screen. A sump is downstream from the flow inlet for capturing solids that do not pass through the screen. A flow outlet is downstream from the screen in fluid communication with the flow inlet. A moveable cleaning assembly may be positioned either within a perimeter of the screen, around the perimeter of the screen or both. The moveable cleaning assembly is moveable with respect to the screen.
Claims29
A screening system for solid removal comprising:
- a housing;
- a screen positioned within the housing;
- a flow inlet operatively connected to an interior chamber defined by the screen;
- a sump downstream from the flow inlet for capturing solids that do not pass through the screen;
- a flow outlet downstream from the screen in fluid communication with the flow inlet;
- and
- a moveable cleaning assembly positioned either within a perimeter of the screen, around the perimeter of the screen or both, wherein the moveable cleaning assembly is moveable with respect to the screen.
A screening system for solid removal comprising:
- a flow inlet;
- a frame having a screen body removably positioned therein operatively connected to the flow inlet;
- a sump downstream from the flow inlet for capturing solids that do not pass through the screen;
- and
- a flow outlet downstream from the screen in fluid communication with the flow inlet.
A screen body for use in a screening system, the screen body comprises:
- a metal sheet;
- and
- angled holes defined in the metal sheet, wherein when viewing a given hole from a first side of the hole in a direction perpendicular to a surface of the metal sheet a view through the metal sheet is obstructed by a backside surface of the given hole.
A screen body for use in a screening system, the screen body comprises:
- a metal sheet;
- and
- angled holes defined in the metal sheet, wherein the angle (α) of each hole with respect to a surface of the metal sheet is a function of the sheet thickness (t) at the hole and the hole diameter (d), wherein
- α
- ≤
- 9
-
- 0
- -
- sin
- -
- 1
-
- d
- t
- .
A method of manufacturing a screen body for use in a screening system, the method comprising:
- providing a metal sheet;
- and
- cutting holes in the metal sheet at an angle with respect to a surface defined by the metal sheet and at an angle with respect to a direction perpendicular to the surface of the metal sheet to form a screen body, wherein when viewing a given hole from a first side of the hole in the direction perpendicular to the surface of the metal sheet a view through the metal sheet is obstructed by a backside surface of the given hole.
A method of manufacturing a screen body for use in a screening system, the method comprising:
- providing a metal sheet;
- and
- cutting holes in the metal sheet at an angle (α) with respect to a surface defined by the metal sheet, wherein the angle (α) with respect to the surface of the metal sheet is a function of the sheet thickness (t) at the hole and the hole diameter (d), wherein
- α
- ≤
- 9
-
- 0
- -
- sin
- -
- 1
-
- d
- t
- .
A screening system for solid removal comprising:
- a variable volume flow inlet assembly;
- a screen positioned downstream from the variable volume flow inlet assembly;
- a sump downstream from the flow inlet assembly for capturing solids that do not pass through the screen;
- and
- a flow outlet downstream from the screen in fluid communication with the variable volume flow inlet assembly.
A screening system for solid removal comprising:
- a housing;
- a screen positioned within the housing;
- a flow inlet operatively connected to an interior chamber defined by the screen;
- a sump downstream from the flow inlet for capturing solids that do not pass through the screen;
- a flow outlet downstream from the screen;
- and
- a weir positioned between the screen and the flow outlet.
A screening system for solids removal comprising:
- a housing;
- a screen positioned within the housing;
- a flow inlet operatively connected to an interior chamber defined by the screen;
- a sump downstream from the flow inlet for capturing solids that do not pass through the screen;
- a sump drain downstream from the sump;
- at least one of a sump valve or a sump pump operatively connected to the sump drain to control the flow rate therethrough based on at least one characteristic of the waste in the system;
- and
- a plurality of sensors operatively connected to the at least one of the sump valve or the sump pump to sense the at least one characteristic of the waste.
Dependencies are inferred from the claim text.