SYSTEMS AND METHODS OF ELIMINATING FILTER AIR LOCKS

摘要

Systems and methods of eliminate filter air locks by maintaining a constant water table at the water head layer of the filter. The constant water table eliminates air locks in the filter as the filter drains. Water flows from the water head layer through a filtration medium in a filter cartridge, and the filtered water is output from a water outlet at the top of the cartridge. For a water table retention filter, where the water (or other liquid) being filtered, is re-directed to the top of the filter to the water head layer to avoid drawing air into the filter. Unfiltered water drains down the center of the filter to the water head layer and then flows up through the filter and is directed out near or at the top of the filter.

主权项

1. A water table retention filter cartridge comprising:
a water head layer that receives unfiltered water and that facilitates flow of water through a filtration medium; a filter layer that houses the filtration medium that filters the water as the water passes through the filtration medium; a cavity that receives filtered water that passes through the filter layer and redirects the filtered water to the top of the water retention filter cartridge and retains a constant water table at the water head layer such that air is not drawn into the water head layer of the water retention filter cartridge as the water retention filter cartridge drains; and a water outlet positioned at the top of the water retention filter cartridge that receives the filtered water from the cavity and through which the filtered water exits the water retention filter cartridge.