Spinner for cleaning cartridge-type water filters

A cartridge-filter cleaning device, comprising:

• a non-rotating pivot shaft with a handhold at a top end and a foot rest at a bottom end, and that can be placed on a floor support and held at a tilt angle by hand;
• a hollow cylindrical sleeve that is free to rotate on and is attached to the pivot shaft;
• a first hub with an attachment to a first portion of the cylindrical sleeve, and providing for the fixturing of a first end of a hollow cylindrical cartridge filter;
• and
• a second hub with an attachment to a second portion of the cylindrical sleeve, and providing for an installation and removal of said cartridge filter past its location on said second portion of the cylindrical sleeve, and further providing for the fixturing of a second end of said cartridge filter;
• wherein the hollow cylindrical sleeve and the first and second hubs cooperatively allow said cartridge filter to be coaxially spun about said stationary pivot shaft to create a centrifugal force within said cartridge filter to dislodge and remove filter debris.

A swimming-pool water-filter system, comprising:

• a vertically oriented cylindrical filter housing with a supply connection to receive raw water from a swimming pool and a water-circulating pump, a waste-water drain, and a return connection to return filtered water to said swimming pool;
• a free-spinning hollow cylindrical filter cartridge mounted within the filter housing on a vertical axis, and providing a filtered-water return through said return connection from an inner surface of a pleated filter material, wherein said raw water is directed inside the filter housing to an outside surface of said pleated filter material;
• and
• a fixed-position plurality of water nozzles disposed inside the filter housing and directed to form a water jet in a plane all along a vertical longitudinal line of an outside surface of said pleated filter material at a non-intersecting angle off said vertical axis enough to support a spin-cleaning of the filter cartridge in a first direction of rotation;
• wherein, said water jet is supported by a pressurization of said raw water by said swimming pool water circulating pump;
• and
• wherein, any of said raw water that does not penetrate said filter material falls free of the filter cartridge together with any debris that was trapped and is carried away by said waste-water drain during a cleaning cycle, and any of said raw water that does penetrate said filter material is filtered by such penetration and is returned as filtered water through said return connection to said swimming pool.