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AssigneeMeurer Industries, Inc.
InventorsJoseph Karl Brauch, Jerry Boyd Francis, Charles Lonnie Meurer, Douglas Lee Meurer
Estimating the term…
A programmed bar screen cleaner removes debris from a screen positioned in a channel to prevent the flow of the debris to a liquid treatment. A rake has tines for engaging the screen to move the debris toward and past an upper end of the screen to remove the debris from the screen. Automatic and controllable raking operations are provided to handle the situation in which there is debris jammed in the screen. The jammed debris resists the movement of the rake along the screen, which is sensed via rake motor overloaded, indicated by motor current in excess of a limit. The existence of a jammed rake causes positive release of the rake from the face of the bars, and further movement of the rake is controlled according to the nature of the problem which caused the jamming. If the rake jams during a raking stroke, the jam is sensed, and according to the nature of the problem, the rake may be positively removed from the face of the bars, and then either returned to an original position at the beginning of the stroke, or advanced in the direction of the original stroke and then returned to the face for completion of the stroke, or advanced in the direction of the original stroke, then returned to the face, and then moved toward the original position at the beginning of the stroke to remove the cause of the jamming from the face of the bars.
Apparatus for cleaning debris from a screen facility positioned in a channel which carries liquid solids, and debris, the debris including large and small pieces, wherein the debris can become jammed in the screen facility, wherein said apparatus includes a rake facility which engages said screen facility in an attempt to clean the debris from the screen facility, the jammed debris being difficult to remove from the screen facility, in the operation of said apparatus there being a history of cleaning cycles of said rake facility, including whether the debris became jammed, and if the debris became jammed whether said rake facility could not remove the jammed debris from the screen facility, and if the debris became jammed whether said rake facility could remove the jammed debris from the screen facility, said apparatus comprising:
A method of cleaning debris from a screen facility positioned in a channel, said screen facility comprising an upstream screen and a downstream screen received in said channel at spaced locations;
Apparatus for cleaning debris from a screen facility positioned in a channel for guiding a flow of liquid, solids and the debris from an upstream end of the channel, the debris including large debris and debris that is smaller than the large debris, the screen facility being designed to prevent the flow of the debris to a liquid treatment basin downstream of the screen facility, the channel guiding the flow of the liquid and the solids downstream from the screen facility to the basin, wherein the debris can become jammed in the screen facility and be difficult to clean from the screen facility, said apparatus comprising:
Apparatus for both front and back raking to clean debris from a screen facility positioned in a channel for guiding liquid and solids and the debris along a longitudinal axis toward a liquid treatment basin, the screen facility being designed to prevent the flow of the debris to the basin;
A method of removing debris from a flow channel which carries liquid, solids, and debris, the debris including large and small pieces;
Dependencies are inferred from the claim text.