Abstract: A composite filter cartridge includes a RO film filter cartridge and a carbon rod filter cartridge. A water outlet end of the RO film filter cartridge used for passing filtered water is connected to a water inlet end of the carbon rod filter cartridge; and a water outlet end of the carbon rod filter cartridge is connected to the water outlet end of the RO film filter cartridge.

Abstract: A composite filter cartridge having scale inhibiting capability, includes a front filter cartridge and a scale inhibiting filter cartridge. The scale inhibiting filter cartridge is disposed in the rear of the front filter cartridge. A water outlet end of the front filter cartridge is connected to a water inlet end of the scale inhibiting filter cartridge; and a water outlet end of the scale inhibiting filter cartridge is connected to a water outlet tube in the front filter cartridge.

Abstract: A filtering core structure having flow guiding and flushing capabilities includes: a wall piece; a filter bottle, disposed on the wall piece, with a top portion of the filter bottle provided with a water input port and a clean water port; a filter core, disposed in the filter bottle, such that water output end of filter core is connected to and in communication with the clean water port; a water input chamber, disposed inside the filter bottle and around perimeter of the filter core; and a flow guiding tube, connected to water input port, and in communication with bottom portion of the water input chamber. In this filter core structure, thrust of water flow is used to flush germs and impurities from the bottom of filter bottle, so that stagnant water will not remain there, in solving the problem of germ multiplication and stinky water.

Abstract: A water purifier capable of automatic flushing and cleaning, comprising: a fixing seat, on which is provided with a water input channel; a flow meter, disposed on the water input channel; a terminal filtering device, connected to an end of the water input channel; a purified water output channel, disposed on the fixing seat, and is connected to a filter core output port of the terminal filtering device; a waste water output channel, disposed on the fixing seat, and is connected and in communication with an inner chamber of the terminal filtering device, to output waste water produced through flushing a filter core; and a waste water output pulsed solenoid valve, disposed on the waste water output channel. The water purifier is novel in design and compact in structure, and is capable of automatic flushing and cleaning.

Abstract: A filter device having composite filter core, comprising: a shell, of a barrel-shape; a composite valve, fixed onto an upper end of the shell, with its upper side provided with a water input port and a water output port side by side, and connected respectively to an outside water pipe; a first filter core, of a barrel-shape, disposed longitudinally in the shell, and fixed onto bottom of the shell; a second filter core, sleeved in the first filter core, and fixed onto bottom of the shell; a water purifying tube, having openings at both ends, with its one end connected to the water output port, and with its other end connected into the second filter core; and a baffle, disposed on both sides of the water purifying tube and extending outward, and fastened to outer side of the first filter core.