Self-cleaning filter for washers
a self-cleaning, washer technology, applied in the direction of filtration separation, cartridge filter, separation process, etc., can solve the problems of high cost and complexity of the device (e.g., motor and/or blade) needed to carry out filter cleaning operations, heavy soiled, and clogging of washer nozzles, so as to reduce the maintenance requirements of the filter element, prevent clogging of spray nozzles, and effectively and efficiently filter water containing a significant quantity
Inactive Publication Date: 2011-04-21
STERIS CORP
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The filter assembly effectively filters water with significant solid debris, minimizes maintenance, and is less expensive to manufacture, ensuring continuous operation and reducing nozzle clogging.
Problems solved by technology
These articles are often heavily soiled with solid debris (including, but not limited to, residues and dirt) from bedding, foodstuffs and animal wastes.
Since the articles are typically heavily soiled when passing through the pre-washing chamber, the water collected in the sump may contain solid debris large enough to clog the washer nozzles.
Therefore, before the water collected by the sump can be re-used, the water must pass through a filter to remove solid debris that could cause the washer nozzles to become clogged.
Other problems with existing filters are the cost and complexity of devices (e.g., motors and / or blades) needed to carry out filter cleaning operations.
Method used
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[0027]Referring now to the drawings wherein the showings are for the purposes of illustrating a preferred embodiment of the invention only and not for the purposes of limiting same, FIG. 1 shows a schematic, side elevational view of a pre-washing section of a tunnel washer 10. A housing 20 defines an inner chamber that is divided into a plurality of processing chambers, namely, a pre-washing chamber 12, a washing chamber (not shown), a rinsing chamber (not shown) and a drying chamber (not shown). For the purpose of illustrating the present invention, only pre-washing chamber 12 will be shown and described.
[0028]A conveyer 30 is located within housing 20 to convey articles 4 through tunnel washer 10. Conveyer 30 is a conventional conveyer device generally comprised of a conveyer belt 32 and rollers 34 that are driven by a motor 36. Conveyer belt 32 extends through the plurality of processing chambers.
[0029]In the illustrated embodiment, articles 4 to be processed by tunnel washer 10 ...
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A self-cleaning filter for a washing apparatus. Water entering a filter assembly travels along a spiral pathway that facilitates the separation of heavy solid debris from the water. A filter element prevents both light and heavy solid debris from entering a conduit leading to spray nozzles, thereby preventing clogging of the nozzles. In a filter cleaning operation, solid debris is removed from the filter assembly.
Description
RELATED APPLICATIONS[0001]This application is a divisional of U.S. application Ser. No. 11 / 459,464, filed Jul. 24, 2006 which is fully incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates generally to fluid filtration, and more particularly to a self-cleaning filter for water filtration.BACKGROUND OF THE INVENTION[0003]Washers are frequently used to clean articles used in the care of laboratory animals, such as animal cages (e.g., wire cages and plastic boxes), racks, debris pans, watering devices, bottles, and feeder bowls. These articles are often heavily soiled with solid debris (including, but not limited to, residues and dirt) from bedding, foodstuffs and animal wastes. One type of washer widely used for cleaning such articles are tunnel washers. Tunnel washers are typically divided into a plurality of processing chambers, wherein pre-washing, washing, rinsing and drying operations are respectively performed. During the pre-washing, washing...
Claims
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IPC IPC(8): B01D35/28
CPCB04C5/13B04C5/22B04C2009/004B04C11/00B04C9/00
InventorROBERT, MAXIMETHIBAULT, NATHALIE
OwnerSTERIS CORP